A cascade crushing and sorting system for high-ash power coal
Patent Information
- Application Number
- CN202522296842.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-30
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-10-30
AI Technical Summary
[0002]动力煤主要用于发电、锅炉燃料等，原煤中含有灰分、硫分等杂质，直接燃烧效率低且污染环境，干法分选系统通常采用单一级别的破碎和分选，对于粒度范围宽、嵌布特征复杂的动力煤，存在分选效率低、精煤损失大、产品质量不稳定等问题
[0017]与现有技术相比，该用于高灰动力煤的梯级破碎与分选系统具备如下有益效果：
Smart Images
Figure CN224793646U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of thermal coal crushing technology, specifically a cascade crushing and sorting system for high-ash thermal coal. Background Technology
[0002] Thermal coal is mainly used for power generation and boiler fuel. Raw coal contains impurities such as ash and sulfur, resulting in low direct combustion efficiency and environmental pollution. Dry separation systems typically employ single-stage crushing and separation, which leads to low separation efficiency, significant clean coal loss, and unstable product quality for thermal coal with a wide particle size range and complex particle distribution characteristics. While single-stage crushing to a very fine particle size may improve the degree of liberation, it can result in over-grinding, increasing the difficulty of pulverized coal processing and energy consumption. Utility Model Content
[0003] (a) Technical problems to be solved
[0004] To address the shortcomings of existing technologies, this utility model provides a cascade crushing and sorting system for high-ash thermal coal, which has the advantage of good cascade crushing and sorting effect.
[0005] (II) Technical Solution
[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a cascade crushing and sorting system for high-ash thermal coal, including a box body, a feeding port at the top of the box body, a pre-crushing chamber and a fine crushing chamber inside the box body, a roller shaft rotatably connected inside the pre-crushing chamber, and crushing claws arranged at equal intervals fixedly installed on the outer surface of the roller shaft.
[0007] The inner bottom wall of the pre-crushing chamber is provided with equally spaced through grooves, which are connected to the fine crushing chamber. Two crushing rollers are rotatably connected inside the fine crushing chamber. Each crushing roller has equally spaced crushing teeth fixedly installed on its outer surface. A vibrating screen is fixedly installed inside the box. A fine crushing box is placed on the right side of the box. Two fine crushing rollers are rotatably connected inside the fine crushing box. Each fine crushing roller has equally spaced fine crushing teeth fixedly installed on its outer surface.
[0008] Furthermore, a discharge chute is provided on the right side of the box.
[0009] By adopting the above technical solution, the coal lumps remaining on the screen can be better discharged to the right.
[0010] Furthermore, a material feeding groove is provided on the left side of the box, and a material feeding plate is fixedly installed on the lower part of the box.
[0011] By adopting the above technical solution, the screened coal blocks can be better discharged outward through the feed plate.
[0012] Furthermore, a guide plate is fixedly installed on the left side of the upper surface of the fine crushing box, and the left end of the guide plate is located below the vibrating screen. A material guide plate is fixedly installed inside the fine crushing box at the bottom.
[0013] By adopting the above technical solution, the coal blocks on the screen can be better guided into the interior of the fine crushing box by the guide plate.
[0014] Furthermore, the input ends of the roller, crushing roller, and fine crushing roller are all connected to a drive device.
[0015] By adopting the above technical solutions, the crushing units can be driven to operate more effectively by external drive equipment.
[0016] (III) Beneficial Effects
[0017] Compared with existing technologies, this cascade crushing and sorting system for high-ash thermal coal has the following advantages:
[0018] This invention features rollers and crushing claws. During operation, a drive device rotates the rollers and crushing claws to crush the introduced coal. The coal then enters the fine crushing chamber through a trough. The drive device further drives the two crushing rollers to rotate in opposite directions, allowing the crushing claws to further crush the coal. The crushed coal is then sorted by a vibrating screen. Larger diameter coal pieces enter the fine crushing box to the right. The drive device then drives the two fine crushing rollers to rotate in opposite directions, further refining the large pieces of coal on the screen. This improves the sorting and crushing efficiency of the device. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model;
[0020] Figure 2 This is a sectional view of the housing of this utility model;
[0021] Figure 3 This is a cross-sectional view of the precision crushing box of this utility model.
[0022] In the diagram: 1-box body, 2-feeding port, 3-discharge chute, 4-fine crushing box, 5-roller, 6-through groove, 7-crushing teeth, 8-feeding chute, 9-pre-crushing chamber, 10-crushing claw, 11-fine crushing chamber, 12-crushing roller, 13-vibrating screen, 14-feeding plate, 15-guide plate, 16-fine crushing roller, 17-guide plate, 18-fine crushing teeth. Detailed Implementation
[0023] 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.
[0024] Please see Figure 1-3 This utility model provides a technical solution: a cascade crushing and sorting system for high-ash thermal coal, including a box body 1, a feeding port 2 at the top of the box body 1, a pre-crushing chamber 9 and a fine crushing chamber 11 inside the box body 1, a roller shaft 5 rotatably connected inside the pre-crushing chamber 9, and crushing claws 10 arranged at equal intervals fixedly installed on the outer surface of the roller shaft 5.
[0025] A discharge chute 3 is provided on the right side of the box body 1 to better discharge the coal blocks remaining on the screen to the right. A feeding chute 8 is provided on the left side of the box body 1. A feeding plate 14 is fixedly installed at the bottom inside the box body 1 to better discharge the coal blocks under the screen to the outside through the feeding plate 14. A guide plate 15 is fixedly installed on the left side of the upper surface of the fine crushing box 4. The left end of the guide plate 15 is located below the vibrating screen 13. A guide plate 17 is fixedly installed at the bottom inside the fine crushing box 4 to better guide the coal blocks on the screen to the inside of the fine crushing box 4 through the guide plate 15. The input ends of the roller 5, crushing roller 12 and fine crushing roller 16 are all connected to drive equipment to better drive each crushing unit to operate through external drive equipment.
[0026] The inner bottom wall of the pre-crushing chamber 9 is provided with equally spaced through grooves 6, and the through grooves 6 are connected to the fine crushing chamber 11. Two crushing rollers 12 are rotatably connected inside the fine crushing chamber 11. Each crushing roller 12 has equally spaced crushing teeth 7 fixedly installed on its outer surface. A vibrating screen 13 is fixedly installed inside the box body 1. A fine crushing box 4 is placed on the right side of the box body 1. Two fine crushing rollers 16 are rotatably connected inside the fine crushing box 4. Each fine crushing roller 16 has equally spaced fine crushing teeth 18 fixedly installed on its outer surface.
[0027] Working principle: Thermal coal is introduced into the box 1 through the feed port 2. The drive device drives the roller shaft 5 and the crushing teeth 10 to rotate, which crushes the introduced thermal coal. The coal then enters the fine crushing chamber 11 through the through groove 6. The drive device drives the two crushing rollers 12 to rotate in opposite directions, which crushes the introduced thermal coal again through the crushing teeth 7. The crushed thermal coal is then sorted by the vibrating screen 13. Large-diameter coal blocks enter the fine crushing box 4 to the right, while coal blocks of qualified diameter fall onto the feed plate 14 and are discharged outward. The drive device drives the two fine crushing rollers 16 to rotate in opposite directions, which further crushes the large pieces of thermal coal on the screen. The coal blocks that have been crushed again are discharged through the guide plate 17, which improves the sorting and crushing effect of the device.
[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A cascade crushing and sorting system for high-ash thermal coal, comprising a housing (1), characterized in that: The top of the box (1) is provided with a feeding port (2), and the inside of the box (1) is provided with a pre-crushing chamber (9) and a fine crushing chamber (11). The inside of the pre-crushing chamber (9) is rotatably connected with a roller (5), and the outer surface of the roller (5) is fixedly installed with crushing claws (10) arranged at equal distances. The inner bottom wall of the pre-crushing chamber (9) is provided with through grooves (6) arranged at equal intervals, and the through grooves (6) are connected to the fine crushing chamber (11). The fine crushing chamber (11) is rotatably connected to two crushing rollers (12). Each crushing roller (12) has crushing teeth (7) arranged at equal intervals fixedly installed on its outer surface. The box body (1) is fixedly installed with a vibrating screen (13). The box body (1) is placed on the right side of the box body (1). The fine crushing box (4) is rotatably connected to two fine crushing rollers (16). Each fine crushing roller (16) has fine crushing teeth (18) arranged at equal intervals fixedly installed on its outer surface.
2. The cascade crushing and sorting system for high-ash thermal coal according to claim 1, characterized in that: The right side of the box (1) is provided with a discharge chute (3).
3. The cascade crushing and sorting system for high-ash thermal coal according to claim 1, characterized in that: The left side of the box (1) is provided with a feeding groove (8), and a feeding plate (14) is fixedly installed at the bottom inside the box (1).
4. A cascade crushing and sorting system for high-ash thermal coal according to claim 1, characterized in that: A guide plate (15) is fixedly installed on the left side of the upper surface of the fine crushing box (4). The left end of the guide plate (15) is located below the vibrating screen (13). A guide plate (17) is fixedly installed inside the fine crushing box (4) at the bottom.
5. A cascade crushing and sorting system for high-ash thermal coal according to claim 1, characterized in that: The input ends of the roller (5), crushing roller (12) and fine crushing roller (16) are all connected to drive devices.