A ball mill for gypsum modification

Abstract

The utility model discloses a ball mill for gypsum modification belongs to ball mill technical field, it includes: feed tank, the inside of feed tank is provided with dust extraction subassembly, and dust extraction subassembly includes: dust extraction cover, dust extraction cover fixed mounting is in the inside wall of one side of feed tank, and one end fixed mounting of dust extraction cover has the connecting pipe, and the connecting pipe is through to the outside of feed tank, realizes broken knife synchronous reverse rotation, can high -efficient broken gypsum agglomerate material, and refines initial raw material particle, avoids the influence of big piece material to subsequent mixing and grinding uniformity, is sufficient to contact and ball mill depth modification building solid foundation for modified reagent, promotes final gypsum modification quality, is convenient for to the dust that the crushing produced carries out concentrated filtration collection, effectively avoids dust diffusion and pollutes workshop air, forms bidirectional mixing track, forms all -round disturbance to gypsum raw material and modified reagent, avoids partial mixing uneven, ensures that modified reagent evenly covers on the surface of gypsum particle.

Description

Technical Field

[0001] This utility model relates to the field of ball mill technology, and in particular to a ball mill for gypsum modification. Background Technology

[0002] Gypsum, a commonly used material in construction and building materials, often suffers from severe agglomeration and uneven particle size in its natural or industrial by-product forms, requiring modification to optimize its performance. Currently, ball mills used for gypsum modification face several technical bottlenecks in practical applications: Firstly, traditional equipment lacks efficient crushing mechanisms, allowing large, agglomerated materials to directly enter subsequent processes. This not only results in insufficient contact between the modifying agent and the gypsum particles but also affects grinding uniformity, leading to inconsistent quality of the finished product and failing to meet the performance requirements of high-end applications. Secondly, the raw material crushing process easily generates large amounts of dust, and existing equipment has poor dust removal capabilities. Dust dispersion pollutes the workshop air, harming the respiratory health of operators and failing to meet environmental protection standards, requiring companies to invest heavily in environmental protection. To ensure cost-effective dust control, existing ball mills have significant shortcomings in the material and modifying agent mixing process. They often employ unidirectional stirring structures with a single stirring trajectory and insufficient disturbance intensity, leading to uneven mixing of gypsum raw materials and modifying agents. Some particles fail to be coated by the agents, directly affecting the depth and effectiveness of subsequent ball milling modification. Furthermore, unidirectional stirring is inefficient, time-consuming, and poorly integrated with subsequent ball milling processes, resulting in extended overall production cycles, limited equipment capacity, and difficulty in meeting the demands of large-scale production. Therefore, we propose a new ball mill for gypsum modification to address this problem. Utility Model Content

[0003] The purpose of this invention is to provide a ball mill for gypsum modification to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A ball mill for gypsum modification includes: a feed hopper, the feed hopper having an internal dust collection assembly; the dust collection assembly including: a dust collection hood, the dust collection hood being fixedly installed on one inner wall of the feed hopper; a connecting pipe being fixedly installed at one end of the dust collection hood, the connecting pipe extending to the outside of the feed hopper; a short pipe being provided at the bottom of the connecting pipe; a filter box being fixedly installed at the bottom of the short pipe; two sets of crushing blades being provided inside the feed hopper; a pipe being fixedly installed at the bottom of the feed hopper; a mixing chamber being fixedly installed on one side of the pipe; and a stirring assembly being provided inside the mixing chamber. The stirring assembly includes: bevel gear one, bevel gear two, and bevel gear three. Bevel gear two and bevel gear three mesh with bevel gear one. A stirring shaft one is fixedly installed at the bottom of bevel gear two. A stirring shaft two is rotatably installed inside the stirring shaft one. The stirring shaft two is fixedly connected to bevel gear three. Multiple sets of connecting rings are fixedly installed on the outer sides of both the stirring shaft one and the stirring shaft two. A stirring rod is fixedly installed on the outer side of each set of connecting rings. A feed pipe is fixedly installed at the bottom of the mixing box. A ball mill cylinder is rotatably installed on one side of the feed pipe. A rotating shaft is rotatably installed on one side of the ball mill cylinder.

[0006] Preferably, each of the two sets of crushing blades has a rotating shaft fixedly installed inside. Both sets of rotating shafts are slidably installed inside the feed box. Both sets of rotating shafts rotate through to one side of the feed box. A third gear is fixedly installed on the outer side of one end of each set of rotating shafts. The two sets of third gears mesh with each other. A motor frame is fixedly installed on one side of the feed box. A motor is fixedly installed on the top of the motor frame. The output shaft of the motor is fixedly connected to the rotating shaft on the left side.

[0007] Preferably, a housing is fixedly installed on the top of the mixing box, and the first bevel gear, the second bevel gear, and the third bevel gear are all disposed inside the housing. A second motor is fixedly installed on one side of the housing, and the output shaft of the second motor is fixedly connected to the first bevel gear. The first stirring shaft is rotatably connected to the mixing box, and the top end of the second stirring shaft is rotatably connected to the inner wall of the top of the housing.

[0008] Preferably, a first gear is fixedly installed on the outer side of the ball mill cylinder, a second gear is provided on one side of the first gear, the second gear meshes with the first gear, a mounting bracket is fixedly installed on one side of the ball mill cylinder, a motor is fixedly installed on the top of the mounting bracket, and the output shaft of the motor is fixedly connected to the second gear.

[0009] Preferably, an air pump is fixedly installed at the bottom of the connecting pipe, the bottom end of the air pump is fixedly connected to the short pipe, a filter plate is provided inside the filter box, an air outlet pipe is fixedly installed at the bottom of one side of the filter box, a door is rotatably installed on the front side of the filter box, and the filter box is fixedly installed inside the mixing box.

[0010] Preferably, a bracket is fixedly installed on one side of the mixing box, a support plate is fixedly installed at the bottom of the bracket, the support plate is fixedly connected to the feed pipe, a support plate is fixedly installed on one side of the rotating shaft, a reagent addition pipe is fixedly installed at the top of the mixing box, and a discharge pipe is fixedly installed at the bottom of the ball mill cylinder.

[0011] This invention describes a ball mill for gypsum modification. Equipped with a dust collection component, crushing blades, and a third gear, the motor drives the left rotating shaft to rotate upon startup. The left rotating shaft, via a third gear fixed to the outside, meshes with the third gear on the right rotating shaft, causing the two sets of crushing blades to rotate synchronously in opposite directions. An air pump generates negative pressure, drawing dust through a dust collection hood on the inner wall of the feed box. The dust enters the filter box via a connecting pipe and a short pipe, where it is filtered and purified by an internal filter plate. Clean gas is then discharged from the outlet pipe. This synchronous reverse rotation of the crushing blades efficiently crushes agglomerated gypsum materials, refines initial raw material particles, and prevents large pieces from affecting the uniformity of subsequent mixing and grinding. This lays a solid foundation for sufficient contact of the modifying agent and deep ball milling modification, improving the final quality of the modified gypsum. It also facilitates centralized filtration and collection of dust generated during crushing, effectively preventing dust diffusion and pollution of the workshop air, reducing the respiratory hazards of dust to operators, meeting environmental protection production requirements, and reducing environmental governance costs.

[0012] In this invention, a ball mill for gypsum modification is provided, which includes a mixing chamber and a stirring assembly. Motor 2 drives bevel gear 1 to rotate, and bevel gear 1 meshes with bevel gear 2 and bevel gear 3, causing them to rotate in opposite directions. This, in turn, causes stirring shaft 1 and stirring shaft 2 to rotate synchronously in opposite directions, forming a bidirectional stirring trajectory. This creates omnidirectional disturbance to the gypsum raw materials and modifying agents, avoiding uneven mixing in certain areas and ensuring that the modifying agents are evenly coated on the surface of the gypsum particles. Compared to traditional unidirectional stirring, the bidirectional stirring structure provides greater disturbance intensity and more thorough contact, shortening the mixing time. Combined with subsequent ball milling processes, this creates an efficient connection, reducing the overall production cycle and improving equipment capacity and production efficiency. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a ball mill for gypsum modification proposed in this utility model;

[0014] Figure 2 This is a cross-sectional structural schematic diagram of a ball mill for gypsum modification proposed in this utility model;

[0015] Figure 3 This is a three-dimensional structural diagram of a crushing blade for a ball mill used in gypsum modification, as proposed in this utility model.

[0016] Figure 4 This is a schematic diagram of the dust collection component structure proposed in this utility model;

[0017] Figure 5 This is a schematic diagram of the stirring assembly structure proposed in this utility model.

[0018] In the diagram: 1. Feed box; 2. Mixing box; 3. Feed pipe; 4. Ball mill cylinder; 5. First gear; 6. Second gear; 7. Dust collection assembly; 701. Dust collection hood; 702. Connecting pipe; 703. Air pump; 704. Filter box; 705. Filter plate; 706. Air outlet pipe; 8. Stirring assembly; 801. Bevel gear one; 802. Bevel gear two; 803. Bevel gear three; 804. Stirring shaft one; 805. Stirring shaft two; 806. Connecting ring; 807. Stirring rod; 9. Third gear; 10. Rotating shaft; 11. Crusher; 12. Support; 13. Feed pipe; 14. Discharge pipe; 15. Reagent addition pipe; 16. Rotating shaft. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figure 1-5 A ball mill for gypsum modification includes: a feed box 1, with a dust collection assembly 7 inside the feed box 1. The dust collection assembly 7 includes a dust collection hood 701, which is fixedly installed on the inner wall of one side of the feed box 1. A connecting pipe 702 is fixedly installed at one end of the dust collection hood 701, extending to the outside of the feed box 1. A short pipe is provided at the bottom of the connecting pipe 702, and a filter box 704 is fixedly installed at the bottom of the short pipe. Two sets of crushing blades 11 are provided inside the feed box 1. A pipe is fixedly installed at the bottom of the feed box 1, and a mixing box 2 is fixedly installed on one side of the pipe. A stirring assembly 8 is provided inside the mixing box 2, and the stirring assembly 8 includes a bevel gear 80. 1. Bevel gear 2 802 and bevel gear 3 803, both of which mesh with bevel gear 1 801. A stirring shaft 1 804 is fixedly installed at the bottom of bevel gear 2 802. A stirring shaft 2 805 is rotatably installed inside the stirring shaft 1 804. The stirring shaft 2 805 is fixedly connected to the bevel gear 3 803. Multiple sets of connecting rings 806 are fixedly installed on the outer sides of both the stirring shaft 1 804 and the stirring shaft 2 805. A stirring rod 807 is fixedly installed on the outer side of each set of connecting rings 806. A feed pipe 13 is fixedly installed at the bottom of the mixing box 2. A ball mill cylinder 4 is rotatably installed on one side of the feed pipe 13. A rotating shaft 16 is rotatably installed on one side of the ball mill cylinder 4.

[0021] In this embodiment, a rotating shaft 10 is fixedly installed inside each of the two sets of crushing blades 11. Both sets of rotating shafts 10 are slidably installed inside the feed box 1. Both sets of rotating shafts 10 rotate through to one side of the feed box 1. A third gear 9 is fixedly installed on the outer side of one end of each set of rotating shafts 10. The two sets of third gears 9 mesh with each other. A motor frame is fixedly installed on one side of the feed box 1. A motor is fixedly installed on the top of the motor frame. The output shaft of the motor is fixedly connected to the rotating shaft 10 on the left side to facilitate the rotation of the two sets of crushing blades 11. A housing is fixedly installed on the top of the mixing box 2. Bevel gear 1 801, bevel gear 2 802, and bevel gear 3 803 are all located inside the housing. A motor is fixedly installed on one side of the housing. The output shaft of the motor is fixedly connected to bevel gear 1 801. A stirring shaft 1 804 is rotatably connected to the mixing box 2. The top end of the stirring shaft 2 805 is rotatably connected to the inner wall of the top of the housing to facilitate bidirectional stirring.

[0022] In this embodiment, a first gear 5 is fixedly installed on the outer side of the ball mill cylinder 4, and a second gear 6 is provided on one side of the first gear 5. The second gear 6 meshes with the first gear 5. A mounting bracket is fixedly installed on one side of the ball mill cylinder 4, and a motor 3 is fixedly installed on the top of the mounting bracket. The output shaft of the motor 3 is fixedly connected to the second gear 6 to facilitate the rotation of the ball mill cylinder 4. An air pump 703 is fixedly installed at the bottom of the connecting pipe 702, and the bottom end of the air pump 703 is fixedly connected to the short pipe. A filter plate 705 is provided inside the filter box 704. An air outlet pipe 706 is fixedly installed on one side of the bottom of the ball mill 4. A door is rotatably installed on the front side of the filter box 704. The filter box 704 is fixedly installed inside the mixing box 2 to facilitate dust collection generated by crushing. A bracket 12 is fixedly installed on one side of the mixing box 2. A support plate 1 is fixedly installed at the bottom of the bracket 12. The support plate 1 is fixedly connected to the feed pipe 3. A support plate 2 is fixedly installed on one side of the rotating shaft 16. A reagent addition pipe 15 is fixedly installed on the top of the mixing box 2. A discharge pipe 14 is fixedly installed at the bottom of the ball mill 4.

[0023] In this embodiment, during use, the gypsum raw material is first fed into the equipment through the feed box 1. After the motor starts, it drives the left rotating shaft 10 to rotate. The left rotating shaft 10 is driven by the third gear 9 fixed on the outside and the third gear 9 of the right rotating shaft 10, so that the two sets of crushing blades 11 rotate synchronously in opposite directions to crush the fed gypsum raw material, break up the agglomerated material, and lay the foundation for subsequent grinding and modification. The dust generated during the crushing process is handled by the dust collection component 7: the air pump 703 starts to generate negative pressure, and the dust is adsorbed through the dust collection hood 701 on the inner wall of the feed box 1. The dust enters the filter box 704 through the connecting pipe 702 and the short pipe. After being filtered and purified by the internal filter plate 705, the clean gas is discharged from the air outlet pipe 706 to avoid dust pollution of the environment. The crushed gypsum raw material enters the mixing box 2 through the pipeline. At the same time, an appropriate amount of modifying agent is added to the mixing box 2 through the agent addition pipe 15. Motor 2 starts and drives bevel gear 801 to rotate. Bevel gear 801 meshes with bevel gears 802 and 803 respectively, causing them to rotate in opposite directions. This, in turn, causes stirring shaft 804 and stirring shaft 805 to rotate synchronously in opposite directions. The stirring rod 807 on the connecting ring 806 on the outer side of stirring shafts 804 and 805 rotates accordingly, thoroughly mixing the gypsum raw material and the modifying agent to ensure that the agent evenly covers the surface of the gypsum particles. The mixed material enters the ball mill cylinder 4 through the feed pipe 13. After motor 3 starts, it drives the second gear 6 to rotate. The second gear 6 meshes with the first gear 5 on the outer side of the ball mill cylinder 4, driving the ball mill cylinder 4 to rotate around the rotating shaft 16. During the rotation of the ball mill cylinder 4, the internal grinding media impacts, squeezes, and grinds the gypsum material to achieve particle refinement. At the same time, the mechanical and chemical action promotes the deep bonding of the modifying agent with the gypsum particles, completing the gypsum modification. The modified and ground finished gypsum is discharged through the discharge pipe 14 at the bottom of the ball mill cylinder 4.

[0024] The ball mill for gypsum modification provided by this utility model has been described in detail above. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A ball mill for gypsum modification, characterized in that, include: A feeding box (1) is provided inside the feeding box (1), and the dust collection assembly (7) includes: a dust collection hood (701), which is fixedly installed on the inner wall of one side of the feeding box (1). A connecting pipe (702) is fixedly installed at one end of the dust collection hood (701), and the connecting pipe (702) extends to the outside of the feeding box (1). A short pipe is provided at the bottom of the connecting pipe (702), and a filter box (704) is fixedly installed at the bottom of the short pipe. Two sets of crushing blades (11) are provided inside the feeding box (1). A pipe is fixedly installed at the bottom of the feeding box (1), and a mixing box (2) is fixedly installed on one side of the pipe. A stirring assembly (8) is provided inside the mixing box (2), and the stirring assembly (8) includes: a bevel gear one (801) and a bevel gear two. (802) and bevel gear three (803), both bevel gear two (802) and bevel gear three (803) mesh with bevel gear one (801), a stirring shaft one (804) is fixedly installed at the bottom of bevel gear two (802), a stirring shaft two (805) is rotatably installed inside the stirring shaft one (804), the stirring shaft two (805) is fixedly connected to bevel gear three (803), multiple sets of connecting rings (806) are fixedly installed on the outside of the stirring shaft one (804) and the stirring shaft two (805), and stirring rods (807) are fixedly installed on the outside of the multiple sets of connecting rings (806). A feed pipe (13) is fixedly installed at the bottom of the mixing box (2), a ball mill cylinder (4) is rotatably installed on one side of the feed pipe (13), and a rotating shaft (16) is rotatably installed on one side of the ball mill cylinder (4).

2. A ball mill for gypsum modification according to claim 1, characterized in that, Both sets of the crushing blades (11) have a rotating shaft (10) fixedly installed inside. Both sets of the rotating shafts (10) are slidably installed inside the feed box (1). Both sets of the rotating shafts (10) rotate through to one side of the feed box (1). A third gear (9) is fixedly installed on the outer side of one end of both sets of the rotating shafts (10). The two sets of third gears (9) mesh with each other. A motor frame is fixedly installed on one side of the feed box (1). A motor is fixedly installed on the top of the motor frame. The output shaft of the motor is fixedly connected to the rotating shaft (10) on the left side.

3. A ball mill for gypsum modification according to claim 1, characterized in that, The top of the mixing tank (2) is fixedly installed with a housing. The first bevel gear (801), the second bevel gear (802), and the third bevel gear (803) are all located inside the housing. The second motor is fixedly installed on one side of the housing. The output shaft of the second motor is fixedly connected to the first bevel gear (801). The first stirring shaft (804) is rotatably connected to the mixing tank (2). The top end of the second stirring shaft (805) is rotatably connected to the inner wall of the top of the housing.

4. A ball mill for gypsum modification according to claim 1, characterized in that, A first gear (5) is fixedly installed on the outside of the ball mill cylinder (4). A second gear (6) is provided on one side of the first gear (5). The second gear (6) meshes with the first gear (5). A mounting bracket is fixedly installed on one side of the ball mill cylinder (4). A motor is fixedly installed on the top of the mounting bracket. The output shaft of the motor is fixedly connected to the second gear (6).

5. A ball mill for gypsum modification according to claim 1, characterized in that, An air pump (703) is fixedly installed at the bottom of the connecting pipe (702). The bottom end of the air pump (703) is fixedly connected to the short pipe. A filter plate (705) is provided inside the filter box (704). An air outlet pipe (706) is fixedly installed at the bottom of one side of the filter box (704). A door is rotatably installed on the front side of the filter box (704). The filter box (704) is fixedly installed inside the mixing box (2).

6. A ball mill for gypsum modification according to claim 1, characterized in that, A bracket (12) is fixedly installed on one side of the mixing box (2), a support plate (1) is fixedly installed at the bottom of the bracket (12), the support plate (1) is fixedly connected to the feed pipe (3), a support plate (2) is fixedly installed on one side of the rotating shaft (16), a reagent addition pipe (15) is fixedly installed at the top of the mixing box (2), and a discharge pipe (14) is fixedly installed at the bottom of the ball mill cylinder (4).

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