Energy-efficient negative pressure type semi-autogenous mill
The dust collection system, consisting of a negative pressure fan and a filter screen, solved the problem of dust diffusion in the semi-autogenous grinding mill, achieving efficient and energy-saving dust collection and cleaning, and protecting the health of the staff.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MAANSHAN XULONG METALLURGICAL MASCH CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-06-19
Smart Images

Figure CN224371576U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of high-efficiency and energy-saving negative pressure semi-autogenous mills, and in particular to a high-efficiency and energy-saving negative pressure semi-autogenous mill. Background Technology
[0002] Semi-autogenous mills offer higher efficiency and greater energy savings compared to traditional autogenous mills. Widely used for crushing and grinding various ores, they are an indispensable piece of equipment in the mining industry. Their performance and quality directly affect ore processing efficiency and the final product quality.
[0003] However, existing semi-autogenous grinding mills often generate a large amount of dust during the processing process, which is dispersed into the air and causes some pollution to the surrounding air, thus affecting the health of the workers. Utility Model Content
[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a high-efficiency and energy-saving negative pressure semi-autogenous grinding mill, which can solve the technical problem that existing semi-autogenous grinding mills often generate a large amount of dust during the processing process, which diffuses into the air and causes certain pollution to the surrounding air, thus affecting the health of workers.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a high-efficiency and energy-saving negative pressure semi-autogenous mill, including a base plate, a pair of fixing plates at the upper end of the base plate, a fixing block on one side of each of the two fixing plates, an outer cylinder on the fixing block, a horizontal plate on one side of the base plate, a negative pressure fan and a collection box at the upper end of the horizontal plate, one end of the negative pressure fan being connected to the collection box via a connecting pipe, and a filter screen plate being installed inside the collection box, a dust suction pipe being connected to one side of the collection box, and one end of the dust suction pipe penetrating through the outer cylinder and extending into the interior of the outer cylinder.
[0006] As a preferred technical solution of this utility model, a second bearing is provided on one side of the outer cylinder, and a connecting rod is provided on the inner wall of the second bearing. The connecting rod is also fixedly connected to the inner wall of the first bearing on the fixed plate. One end of the connecting rod is fixedly connected to the driven sprocket. A motor is provided at the upper end of the bottom plate. The output end of the motor is provided with a driving sprocket, and the driving gear and the driven gear are connected by a chain.
[0007] As a preferred embodiment of this utility model, one end of the connecting rod is provided with an inner cylinder.
[0008] As a preferred technical solution of this utility model, a third bearing is provided on one side of the inner cylinder, and a feed pipe is provided on the inner wall of the third bearing. One end of the feed pipe passes through the fixing plate and is covered with a sealing cap.
[0009] As a preferred embodiment of this utility model, the inner cylinder is provided with multiple through holes, and the inner wall of the inner cylinder is provided with multiple partitions, with steel balls placed inside the partitions.
[0010] As a preferred embodiment of this utility model, a box is placed on the upper end of the base plate, and a door is provided on the outer cylinder.
[0011] Compared with the prior art, the beneficial effects that this utility model can achieve are:
[0012] By activating the negative pressure fan, a negative pressure environment is created inside the outer cylinder, allowing dust generated during processing to enter the collection box through the suction pipe. Simultaneously, the filter screen inside the collection box effectively prevents dust from entering the negative pressure fan. Furthermore, opening the door on one side of the collection box allows for cleaning of the dust inside. This device prevents the generation and spread of large amounts of dust into the air during processing, thus preventing air pollution and potential health risks to workers. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of the base plate and outer cylinder of this utility model;
[0014] Figure 2 This is a side view of the base plate and outer cylinder of this utility model.
[0015] Figure 3 This is a schematic diagram of the main structure of the base plate and fixing plate of this utility model;
[0016] Figure 4 This is a schematic diagram of the internal structure of the outer cylinder of this utility model;
[0017] Figure 5 This is a schematic cross-sectional view of the inner cylinder of this utility model;
[0018] The components are as follows: 1. Base plate; 2. Fixing plate; 3. Fixing block; 4. Outer cylinder; 5. Horizontal plate; 6. Negative pressure fan; 7. Collection box; 8. Filter screen; 9. Suction pipe; 10. First bearing; 11. Connecting rod; 12. Second bearing; 13. Driven sprocket; 14. Motor; 15. Drive sprocket; 16. Chain; 17. Inner cylinder; 18. Third bearing; 19. Feed pipe; 20. Sealing cover; 21. Through hole; 22. Partition; 23. Steel ball; 24. Box body; 25. Opening and closing door; 26. Connecting pipe. Detailed Implementation
[0019] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation are all within the protection scope of this utility model without creative effort.
[0020] Example
[0021] like Figure 1 , Figure 4 and Figure 5 As shown, this utility model discloses a high-efficiency and energy-saving negative pressure semi-autogenous mill. A second bearing 12 is provided on one side of the outer cylinder 4. A connecting rod 11 is provided on the inner wall of the second bearing 12, and the connecting rod 11 is simultaneously fixedly connected to the inner wall of the first bearing 10 on the fixed plate 2. One end of the connecting rod 11 is fixedly connected to the driven sprocket 13. A motor 14 is provided at the upper end of the base plate 1, and a driving sprocket 15 is provided at the output end of the motor 14. The driving sprocket 15 and the driven sprocket 13 are exactly the same size and specifications. 5 is connected to the driven sprocket 13 via a chain 16. One end of the connecting rod 11 is provided with an inner cylinder 17. A third bearing 18 is provided on one side of the inner cylinder 17. A feed pipe 19 is provided on the inner wall of the third bearing 18. One end of the feed pipe 19 passes through the fixed plate 2 and is covered with a sealing cap 20. Multiple through holes 21 are provided on the inner cylinder 17, and multiple partitions 22 are provided on the inner wall of the inner cylinder 17. Steel balls 23 are placed in the partitions 22. A box 24 is placed on the upper end of the bottom plate 1, and an opening and closing door 25 is provided on the outer cylinder 4.
[0022] In use, the corresponding ore can be added into the feed pipe 19 by removing the sealing cap 20. At the same time, the ore enters the inner cylinder 17 through the feed pipe 19. Simultaneously, the motor 14 is started, which drives the drive sprocket 15 to rotate. The drive sprocket 15 drives the driven sprocket 13 to rotate through the chain 16. Under the action of the first bearing 10, the second bearing 12, and the third bearing 18, the driven sprocket 13 can effectively drive the connecting rod 11 and the inner cylinder 17 to rotate. During the rotation of the inner cylinder 17, the steel ball 23 can be moved to a certain height and fall, thus effectively impacting and grinding the ore until the diameter of the ore is smaller than the through hole 21 and falls into the outer cylinder 4. In addition, by opening the switch door 25 on the outer cylinder 4, the ore can fall into the box 24 for collection and processing. Moreover, this device only requires one motor 14 for processing during use, thus making the device highly efficient and energy-saving.
[0023] As a further implementation of this embodiment, such as Figures 1-5As shown, a pair of fixing plates 2 are provided on the upper end of the base plate 1. Each fixing plate 2 has a fixing block 3 on one side. An outer cylinder 4 is provided on the fixing block 3. A horizontal plate 5 is provided on one side of the base plate 1. A negative pressure fan 6 and a collection box 7 are provided on the upper end of the horizontal plate 5. One end of the negative pressure fan 6 is connected to the collection box 7 through a connecting pipe 26. A filter screen plate 8 is provided inside the collection box 7. A suction pipe 9 is connected to one side of the collection box 7. One end of the suction pipe 9 passes through the outer cylinder 4 and extends into the interior of the outer cylinder 4. The motor 14 and the negative pressure fan 6 on the device are electrically connected to an external power source to ensure the normal use of the device.
[0024] When in use, by starting the negative pressure fan 6, a negative pressure environment can be formed inside the outer cylinder 4, allowing the dust generated during the processing to enter the collection box 7 through the dust suction pipe 9. At the same time, the filter screen 8 inside the collection box 7 can effectively prevent dust from entering the negative pressure fan 6. In addition, the dust inside the collection box 7 can be cleaned by opening the door on one side of the collection box 7. This device can prevent a large amount of dust from being generated during the processing and spreading into the air, thereby preventing pollution of the surrounding air and affecting the health of the workers.
[0025] Specific working principle: During use, by removing the sealing cap 20 on the feed pipe 19, the corresponding ore can be added into the feed pipe 19. Simultaneously, the ore enters the inner cylinder 17 through the feed pipe 19. At the same time, the motor 14 is started, driving the drive sprocket 15 to rotate. The drive sprocket 15 drives the driven sprocket 13 to rotate via the chain 16. Under the action of the first bearing 10, the second bearing 12, and the third bearing 18, the driven sprocket 13 can effectively drive the connecting rod 11 and the inner cylinder 17 to rotate. During the rotation of the inner cylinder 17, the steel ball 23 moves to a certain height and falls, thus effectively impacting and grinding the ore until its diameter is smaller than the through hole 21 and falls into the outer cylinder 4. Simultaneously, by starting the negative pressure fan 6... Under the action of the vacuum pump, a negative pressure environment can be formed inside the outer cylinder 4, allowing the dust generated during the processing to enter the collection box 7 through the dust suction pipe 9. At the same time, the filter plate 8 inside the collection box 7 can effectively prevent dust from entering the negative pressure fan 6. In addition, the dust inside the collection box 7 can be cleaned by opening the door on one side of the collection box 7. This device can prevent a large amount of dust from being generated and diffused into the air during the processing, thereby preventing pollution of the surrounding air and affecting the health of the workers. In addition, by opening the switch door 25 on the outer cylinder 4, the dust can fall into the box 24 for collection and treatment. Moreover, this device only requires one motor 14 for processing, thus making the device highly efficient and energy-saving.
[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A high-efficiency and energy-saving negative pressure semi-autogenous mill, comprising a base plate (1), characterized in that: The bottom plate (1) has a pair of fixing plates (2) at its upper end. Each of the two fixing plates (2) has a fixing block (3) on one side. The fixing block (3) has an outer cylinder (4) on it. The bottom plate (1) has a horizontal plate (5) on one side. The upper end of the horizontal plate (5) is provided with a negative pressure fan (6) and a collection box (7). One end of the negative pressure fan (6) is connected to the collection box (7) through a connecting pipe (26). The collection box (7) is provided with a filter screen plate (8). The collection box (7) is connected to a dust suction pipe (9) on one side. One end of the dust suction pipe (9) passes through the outer cylinder (4) and extends into the outer cylinder (4). A second bearing (12) is provided on one side of the outer cylinder (4). A connecting rod (11) is provided on the inner wall of the second bearing (12). The connecting rod (11) is fixedly connected to the inner wall of the first bearing (10) on the fixed plate (2). One end of the connecting rod (11) is fixedly connected to the driven sprocket (13). A motor (14) is provided at the upper end of the bottom plate (1). A drive sprocket (15) is provided at the output end of the motor (14). The drive sprocket (15) and the driven sprocket (13) are connected by a chain (16). One end of the connecting rod (11) is provided with an inner cylinder (17); The inner cylinder (17) is provided with multiple through holes (21), and the inner wall of the inner cylinder (17) is provided with multiple partitions (22), and steel balls (23) are placed inside the partitions (22).
2. The high-efficiency and energy-saving negative pressure semi-autogenous mill according to claim 1, characterized in that: A third bearing (18) is provided on one side of the inner cylinder (17). The inner wall of the third bearing (18) is provided with a feed pipe (19). One end of the feed pipe (19) passes through the fixing plate (2) and is covered with a sealing cap (20).
3. The high-efficiency and energy-saving negative pressure semi-autogenous mill according to claim 1, characterized in that: A box (24) is placed on the upper end of the base plate (1), and a door (25) is provided on the outer cylinder (4).