Crushing structure for coal crusher
By designing multiple impact blades and water-cooled bearing seats in the coal crusher, the problems of blade jamming and high dust were solved, the crushing efficiency was improved and the operating heat was reduced, thus achieving a highly efficient coal crushing process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-03-31
AI Technical Summary
In existing coal crushers, the crushing blades are prone to getting stuck with the coal, resulting in low crushing efficiency. In addition, the working environment is dusty, and the bearing housings require frequent lubrication, which reduces working efficiency.
Multiple crushing blades were designed, with multiple impact blades on each blade. The number of blades was adjusted according to their positions. Water-cooled bearing housings were used to improve the impact effect and avoid the risk of jamming. Water-cooled bearing housings were also used to reduce heat.
It improves crushing efficiency, reduces the risk of crushing blades getting stuck, enhances the impact effect, and reduces operating heat through water-cooled bearing housing, thereby improving overall working efficiency.
Smart Images
Figure CN224057507U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of processing machinery, and in particular to a coal crushing structure. Background Technology
[0002] Coal is one of the most common combustible fuels. Power plant boilers require very fine coal powder for combustion. Before coal lumps are put into use, they need to be ground to improve their combustion efficiency. Therefore, the coal entering the power plant needs to be crushed. Because the coal material is of different sizes, the crushing blades are prone to getting stuck with the coal material during the crushing process, making it impossible to crush the coal material. This results in low crushing efficiency. In addition, the working environment is dusty, and the bearing housings need to be lubricated frequently, which increases the number of working steps and reduces working efficiency.
[0003] The technical problem to be solved by this application is: how to improve the impact effect of the crushing blades on the coal. Utility Model Content
[0004] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a crushing structure for a coal crusher.
[0005] The technical solution adopted by this utility model is as follows: a crushing structure for a coal crusher, including crushing blades and discharge fan blades. Several crushing blades are arranged in a row. The discharge fan blade is located at one end of the drive shaft. The crushing blade includes a crushing main plate and an impact blade. The impact blade is fixedly located on the outer edge of the crushing main plate. One side of the impact blade is fixedly connected to the crushing main plate. The rest of the impact blade protrudes from the crushing main plate. The closer the crushing blade is to the discharge fan blade, the more impact blades are provided.
[0006] In some implementations, the crushing board and the impact paddle are at a 90° angle.
[0007] In some implementations, a number of impact paddles are evenly distributed along the outer edge of the crushing mainboard.
[0008] In some embodiments, four pulverizing blades are provided, and the number of striking blades provided by the four pulverizing blades is 11, 11, 9, and 7.
[0009] In some embodiments, the device includes a drive shaft and bearing housings, with the crushing blades and discharge fan blades coaxially arranged and fixedly connected to the drive shaft, and both ends of the drive shaft connected to the corresponding bearing housings.
[0010] In some embodiments, the bearing housing is a water-cooled bearing housing with a circulating oil system.
[0011] The beneficial effects of this utility model are as follows:
[0012] The crushing structure for this coal crusher features multiple crushing blades with multiple impact blades. These impact blades crush the coal by impacting it. The number of impact blades can be adjusted according to the position of the crushing blades to target coal of different sizes. This effectively avoids the risk of the crushing blades getting stuck and maximizes the number of impacts on the coal, further enhancing the impact effect of the crushing blades and improving crushing efficiency. In addition, the use of water-cooled bearing housings effectively reduces the heat generated by the drive shaft during high-speed operation. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0014] The labels and names in the diagram correspond as follows: 1. Drive shaft; 2. Bearing housing; 3. Crushing blade; 4. Discharge fan blade; 31. Impact blade; 32. Crushing main board. Detailed Implementation
[0015] 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.
[0016] Please see Figure 1 This utility model provides a technical solution: a crushing structure for a coal crusher, including a drive shaft 1, a bearing seat 2, crushing blades 3, and a discharge fan 4. Four crushing blades 3 are provided, and the crushing blades 3 and the discharge fan 4 are coaxially arranged and fixedly connected to the drive shaft 1. Both ends of the drive shaft 1 are respectively connected to the corresponding bearing seats 2.
[0017] Four crushing blades 3 are arranged in a row, and the discharge fan 4 is set at one end of the drive shaft 1. The crushing blades 3 include a crushing main plate 32 and an impact blade 31. The impact blade 31 is fixedly set on the outer edge of the crushing main plate 32. One side of the impact blade 31 is fixedly connected to the crushing main plate 32, and the rest of the impact blade 31 protrudes from the crushing main plate 32. The crushing main plate 32 and the impact blade 31 form a 90° angle, fully exposing the area for impact with the coal. Several impact blades 31 are evenly distributed on the outer edge of the crushing main plate 32. Since the discharge fan 4 is used to transport the crushed coal out, the coal enters from the end furthest from the discharge fan 4. Because the initial volume of the coal being struck is relatively large, the distance between the striking blades 31 cannot be too close to prevent the crushing blades 3 from getting stuck. Therefore, the number of striking blades 31 on the four crushing blades 3 is different. The crushing blade 3 furthest from the discharge fan 4 has the fewest striking blades 31, and the crushing blade 3 closest to the discharge fan 4 has the most striking blades 31. The closer the crushing blade 3 is to the discharge fan 4, the more striking blades 31 it has. In this embodiment, the number of striking blades 31 on the four crushing blades 3 is 11, 11, 9, and 7. This is to prevent the crushing blades 3 from getting stuck by the coal, and also because the more striking blades 31 there are, the more times the coal is struck, resulting in a smaller coal volume.
[0018] To reduce the operating temperature of the bearing housing 2, in this embodiment, preferably, a water-cooled bearing housing is used. Furthermore, to facilitate maintenance, the bearing housing is a water-cooled bearing housing with a circulating oil system.
[0019] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A pulverizing structure for a coal pulverizer, characterized by, Including the pulverization paddle (3) and the discharge fan blade (4), the pulverization paddle (3) is provided with several, several The pulverization paddle (3) is arranged, the discharge fan blade (4) is arranged at one end of the driving shaft (1), the pulverization paddle (3) includes the pulverization main plate (32) and the beating paddle (31), the beating paddle (31) is fixedly arranged at the outer edge of the pulverization main plate (32), one side of the beating paddle (31) is fixedly connected with the pulverization main plate (32), the rest of the beating paddle (31) all protrude from the pulverization main plate (32), the more the number of beating paddles (31) arranged by the pulverization paddle (3) close to the discharge fan blade (4).
2. The pulverizing structure for a coal pulverizer according to claim 1, characterized by, The pulverization main plate (32) and the beating paddle (31) form a 90° angle.
3. The pulverizing structure for a coal pulverizer according to claim 1, characterized by, The several beating paddles (31) are evenly distributed on the outer edge of the pulverization main plate (32).
4. The pulverizing structure for a coal pulverizer according to claim 1, characterized by, The pulverization paddle (3) is provided with four, the number of beating paddles (31) arranged by the four pulverization paddle (3) is 11, 11, 9 and 7.
5. The pulverizing structure for a coal pulverizer according to claim 1, wherein Including the driving shaft (1) and the bearing seat (2), the pulverization paddle (3) and the discharge fan blade (4) are coaxially arranged and fixedly connected with the driving shaft (1), both ends of the driving shaft (1) are connected with the corresponding bearing seat (2) respectively.
6. The pulverizing structure for a coal pulverizer according to claim 5, characterized by, The bearing seat (2) is a water-cooled bearing seat with a circulating oil system.