Coal crushing and screening device
By designing the quantity control and cleaning components, the intermittent feeding and automatic cleaning of the coal crushing and screening device were achieved, solving the problem of filter screen clogging and improving the screening efficiency and automation level of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUODIAN JIANTOU INNER MONGOLIA ENERGY CO LTD
- Filing Date
- 2025-01-03
- Publication Date
- 2026-05-12
AI Technical Summary
The filters of existing coal crushing and screening equipment are prone to clogging, and manual cleaning is inefficient, which affects screening efficiency.
The design incorporates a quantity control component and a cleaning component. The material feeding shaft works in conjunction with the material feeding trough to achieve intermittent feeding. Combined with the drive component, the steel brush plate automatically cleans the filter screen to prevent clogging.
It achieves automatic unclogging of the filter screen, improves screening efficiency, avoids manual cleaning, and enhances the working efficiency of the equipment.
Smart Images
Figure CN224221423U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of coal processing technology, and in particular relates to a coal crushing and screening device. Background Technology
[0002] Coal, hailed as "black gold" and the "food of industry," has been one of the world's primary energy sources since the 18th century. During coal mining, it typically needs to be crushed, then screened according to size, and finally processed into different products based on the screened dimensions. However, existing crushing and screening equipment often encounters problems. Because the raw materials are of varying sizes and shapes, and the crushed material may be polygonal, it can become stuck in the filter screen, causing blockage. Prolonged blockage reduces the filter's efficiency, and manual cleaning is required, further slowing down the cleaning process. For example, patent number CN202321549908.9 describes this problem, where coal material may get stuck in the filter holes during screening, preventing the filter from discharging material quickly. Utility Model Content
[0003] In view of the problems existing in the prior art, this utility model provides a coal crushing and screening device, which solves the problems that the filter screen is easy to clog during screening and that manual cleaning is slow.
[0004] This utility model is implemented as follows: a coal crushing and screening device includes a workbench, a crushing box disposed on the workbench, a filter screen disposed between the crushing box and the workbench, and further includes:
[0005] A quantity control component, installed inside the crushing chamber, is used for intermittent feeding of crushed material. It includes a feeding shaft that is rotatably installed inside the crushing chamber, and several feeding slots that are equally spaced on the feeding shaft. The crushing shaft inside the crushing chamber is driven by the feeding shaft.
[0006] The cleaning component, located inside the workbench and below the filter screen, is used to unclog the filter screen and includes rotating two steel brush plates located inside the workbench.
[0007] The drive assembly, located on the workbench, is used to simultaneously drive the crushing box, the metering control assembly, and the cleaning assembly to work at the same time.
[0008] As a preferred embodiment of this invention, the quantity control component further includes a first rotating column rotatably disposed inside the crushing chamber, and the feeding shaft is mounted on the first rotating column and disposed below the crushing shaft inside the crushing chamber.
[0009] As a preferred embodiment of this invention, the cleaning assembly further includes two second rotating columns rotatably disposed within the workbench, the two second rotating columns being reversed by a reversing wheel so that they rotate in opposite directions.
[0010] As a preferred embodiment of this utility model, an mounting plate is installed on the second rotating column, the steel brush plate is disposed on the mounting plate, and a displacement component for moving the steel brush plate is also provided between the mounting plate and the steel brush plate.
[0011] As a preferred embodiment of this utility model, the displacement component includes a piston cylinder mounted on a workbench, a piston rod slidably disposed inside the piston cylinder, a spring for resetting the piston rod and the piston cylinder being sleeved between the piston rod and the piston cylinder, an air bladder being disposed between the steel brush plate and the mounting plate, and an air pipe being connected through the end of the piston cylinder, with the end of the air pipe communicating with the air bladder.
[0012] As a preferred embodiment of this invention, the initial position of the end of the piston rod is located in the middle of the piston cylinder, which is used to drive the piston rod to move left and right inside the piston cylinder.
[0013] As a preferred embodiment of this invention, the end of the airbag is provided with an electromagnetic exhaust valve, which is controlled by an external controller to discharge gas from inside the airbag.
[0014] In a preferred embodiment of this invention, the drive assembly includes a rack fixedly mounted on a piston rod; a drive motor mounted on a worktable, with a first rotating column connected to the output end of the drive motor; a reduction gearbox mounted on the worktable, with the output end of the drive motor connected to the input end of the reduction gearbox, the output end of the reduction gearbox being provided with a half gear; a reversing gearbox mounted on the worktable, with a full gear and an intermittent gear at the input end of the reversing gearbox, the half gear meshing with the full gear, the intermittent gear meshing with the rack; a torsion spring sleeved on the output end of the reversing gearbox, and the output end of the reversing gearbox being connected to the second rotating column.
[0015] As a preferred embodiment of this invention, the intermittent gear has several slits at equal angles, the slits being located between every two sets of teeth, and each set of teeth having at least seven teeth.
[0016] As a preferred embodiment of this utility model, the workbench is inclined and has a discharge port at the bottom.
[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0018] This invention utilizes a feeding shaft and a feeding trough that work together to allow for intermittent feeding, effectively preventing material accumulation in the crushing chamber. This prevents excessive material from affecting the screening efficiency when it enters the filter screen. Furthermore, the drive assembly and cleaning assembly work together to effectively clean the filter screen with a steel brush during operation, ensuring its permeability and preventing material blockage that could impair screening efficiency. This automatic cleaning eliminates the need for manual cleaning, further improving the equipment's efficiency. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the front view structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the structure from the left side of this utility model;
[0021] Figure 3 This is a partial right-side sectional view of the structure of this utility model;
[0022] Figure 4 This is a schematic diagram of the internal structure of this utility model from a partial upper view.
[0023] In the picture:
[0024] 1. Workbench; 2. Crushing box; 3. Filter screen; 4. Feed shaft; 5. Feed chute; 6. First rotating column; 7. Steel brush plate; 8. Second rotating column; 9. Mounting plate; 10. Reversing wheel; 11. Piston cylinder; 12. Piston rod; 13. Spring; 14. Airbag; 15. Air pipe; 16. Rack; 17. Reduction gearbox; 18. Half gear; 19. Reversing gearbox; 20. Full gear; 21. Intermittent gear; 22. Torsion spring; 23. Drive motor. Detailed Implementation
[0025] To further understand the utility model content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.
[0026] The structure of this utility model will now be described in detail with reference to the accompanying drawings.
[0027] like Figures 1 to 4 As shown in the figure, a coal crushing and screening device provided in this embodiment of the present invention includes a workbench 1, a crushing box 2 disposed on the workbench 1, a filter screen 3 disposed between the crushing box 2 and the workbench 1, and further includes:
[0028] The quantity control component is set inside the crushing box 2 for intermittent feeding of crushed material. It includes a feeding shaft 4 rotatably set inside the crushing box 2 and several feeding grooves 5 opened at equal angles on the feeding shaft 4. The crushing shaft inside the crushing box 2 is connected to the feeding shaft 4 for transmission.
[0029] The cleaning component is set inside the workbench 1 and located below the filter screen 3. It is used to unclog the filter screen 3 and includes rotating two steel brush plates 7 set inside the workbench 1.
[0030] The drive assembly, located on the workbench 1, is used to simultaneously drive the crushing box 2, the metering control assembly, and the cleaning assembly to work at the same time.
[0031] As a preferred embodiment of this invention, the quantity control component further includes a first rotating column 6 rotatably disposed inside the crushing box 2, and a feeding shaft 4 mounted on the first rotating column 6. The feeding shaft 4 is disposed below the crushing shaft inside the crushing box 2 and is used to drive the feeding shaft 4 to rotate synchronously with the crushing shaft, thereby realizing that the equipment crushes and feeds material intermittently at the same time, avoiding material accumulation.
[0032] As a preferred embodiment of this utility model, the cleaning assembly further includes two second rotating columns 8 rotatably disposed within the workbench 1. The two second rotating columns 8 are reversed by a reversing wheel 10, causing them to rotate in opposite directions. An mounting plate 9 is installed on the second rotating columns 8, and a steel brush plate 7 is disposed on the mounting plate 9. A displacement component for moving the steel brush plate 7 is also provided between the mounting plate 9 and the steel brush plate 7, which facilitates driving the two steel brush plates 7 to rotate relative to each other, so that they move to the underside of the filter screen 3 to unclog the filter screen 3 and prevent the filter screen 3 from becoming clogged during use.
[0033] As a preferred embodiment of this utility model, the displacement component includes a piston cylinder 11 mounted on the workbench 1, a piston rod 12 slidably disposed inside the piston cylinder 11, a spring 13 for resetting the piston rod 12 and the piston cylinder 11, an airbag 14 disposed between the steel brush plate 7 and the mounting plate 9, an air pipe 15 being connected through the end of the piston cylinder 11, and the end of the air pipe 15 being connected through the airbag 14, and an electromagnetic exhaust valve being disposed at the end of the airbag 14, which allows the steel brush plate 7 to form an up-and-down working state during use, thereby further accelerating the cleaning efficiency of the steel brush plate 7 and making it more convenient to clean.
[0034] As a preferred embodiment of this utility model, the drive assembly includes a rack 16 fixedly mounted on the piston rod 12; a drive motor 23 mounted on the worktable 1, with the first rotating column 6 being drivenly connected to the output end of the drive motor 23; a reduction gearbox 17 mounted on the worktable 1, with the output end of the drive motor 23 being drivenly connected to the input end of the reduction gearbox 17, and a half gear 18 mounted on the output end of the reduction gearbox 17; a reversing gearbox 19 mounted on the worktable 1, with a full gear 20 and an intermittent gear 21 mounted on the input end of the reversing gearbox 19, the half gear 18 meshing with the full gear 20, the intermittent gear 21 meshing with the rack 16, and a torsion spring 22 sleeved on the output end of the reversing gearbox 19, and the output end of the reversing gearbox 19 being drivenly connected to the second rotating column 8, for simultaneously driving the crushing of the equipment and simultaneously realizing the intermittent cleaning of the equipment, so that the equipment can be effectively prevented from clogging during use.
[0035] As a preferred embodiment of this utility model, the intermittent gear 21 has several slits at equal angles, which are located between every two sets of teeth. Each set of teeth has at least seven teeth, which are used to intermittently drive the rack 16 to move and inflate the airbag 14.
[0036] As a preferred embodiment of this utility model, the workbench 1 is inclined and has a discharge port at the bottom to facilitate material unloading from the equipment.
[0037] The working principle of this utility model:
[0038] refer to Figure 2 The material to be crushed is placed inside the crushing box 2. The drive motor 23 drives the first rotating column 6 and the crushing shaft inside the crushing box 2 to rotate, causing the material to be crushed inside the crushing box 2. The crushed material then falls into... Figure 3 Inside the feeding shaft 4, when the feeding shaft 4 rotates, the feeding chute 5 will rotate at the same time. When the feeding chute 5 moves to the lower side of the crushing shaft, the crushed material will fall into the feeding chute 5, thus filling the feeding chute 5. When the feeding chute 5 rotates to the lower side, the material in the feeding chute 5 will fall onto the filter screen 3. This cycle can achieve intermittent feeding, avoiding the accumulation of material in the crushing box 2 and on the filter screen 3, which would affect the filtration efficiency.
[0039] refer to Figure 2 While the drive motor 23 drives the first rotating column 6 to rotate, it also drives the reduction gearbox 17 to work. The reduction gearbox 17 reduces the rotation of the drive motor 23. At the same time, the half gear 18 on the reduction gearbox 17 rotates in the forward direction. When the half gear 18 meshes with the full gear 20, the half gear 18 drives the full gear 20 to rotate. At this time, the full gear 20 drives the second rotating column 8 to rotate through the reversing gearbox 19. The second rotating column 8 is then reversed through the reversing wheel 10, causing it to rotate relative to the first rotating column 6, thereby causing the second rotating column 6 to rotate relative to the first rotating column 6. Figure 4 The two mounting plates 9 rotate relative to each other. When the two mounting plates 9 rotate to be parallel to the filter screen 3, the steel brush plate 7 clears the filter screen 3 from the bottom. The steel brush on the surface of the steel brush plate 7 pushes out the debris blocked in the filter screen 3, thereby maintaining its permeability. When the half gear 18 disengages from the full gear 20, the torsion spring 22 drives the second rotating column 8 to rotate in the opposite direction, thereby resetting the mounting plates 9 and the steel brush plate 7. This process is repeated to effectively ensure the quality and efficiency of screening.
[0040] refer to Figure 2 As the full gear 20 rotates, the intermittent gear rotates simultaneously. At this time, the intermittent gear 21 will intermittently drive the rack 16 to move. When the rack 16 moves, the piston rod 12 will slide intermittently in the piston cylinder 11 in conjunction with the spring 13. When the piston rod 12 slides, an airflow is formed between the piston rod 12 and the piston cylinder 11. The airflow enters the air bladder 14 through the air pipe 15, causing the air bladder 14 to inflate. When the air bladder 14 inflates, it pushes the steel brush plate 7 to rise. When the air bladder 14 exhausts air through the electromagnetic exhaust valve, the steel brush plate 7 descends. This forms the up-and-down operation of the steel brush plate 7, which can ensure the unblocking efficiency of the filter screen 3.
[0041] This invention utilizes a feeding shaft 4 and a feeding trough 5 to achieve intermittent feeding, effectively preventing material accumulation in the crushing chamber 2. This avoids excessive material buildup that could affect the screening efficiency of the filter screen 3. Furthermore, the drive assembly and cleaning assembly in the device effectively clean the filter screen 3 using a steel brush 7 during operation, ensuring its permeability and preventing material blockage that could impair screening efficiency. This automatic cleaning eliminates the need for manual cleaning and further improves the equipment's efficiency.
[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0043] 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 coal crushing and screening device, comprising a workbench (1), a crushing box (2) disposed on the workbench (1), and a filter screen (3) disposed between the crushing box (2) and the workbench (1), characterized in that: Also includes: The quantity control component is set inside the crushing box (2) for intermittent feeding of crushed materials. It includes a feeding shaft (4) rotatably set inside the crushing box (2) and several feeding grooves (5) opened at equal angles on the feeding shaft (4). The crushing shaft inside the crushing box (2) is connected to the feeding shaft (4) in a transmission configuration. The cleaning component is set inside the workbench (1) and located below the filter screen (3) for unclogging the filter screen (3), including rotating two steel brush plates (7) set inside the workbench (1); The drive assembly is set on the workbench (1) and is used to simultaneously drive the crushing box (2), the metering assembly and the cleaning assembly to work at the same time.
2. The coal crushing and screening device as described in claim 1, characterized in that: The quantity control component also includes a first rotating column (6) rotatably disposed inside the crushing box (2), and the feeding shaft (4) is mounted on the first rotating column (6) and disposed on the lower side of the crushing shaft inside the crushing box (2).
3. The coal crushing and screening device as described in claim 1, characterized in that: The cleaning assembly also includes two second rotating columns (8) rotatably disposed within the workbench (1). The two second rotating columns (8) are reversed by a reversing wheel (10) so that they rotate in opposite directions.
4. The coal crushing and screening device as described in claim 3, characterized in that: A mounting plate (9) is installed on the second rotating column (8), and the steel brush plate (7) is set on the mounting plate (9). A displacement component for moving the steel brush plate (7) is also provided between the mounting plate (9) and the steel brush plate (7).
5. The coal crushing and screening device as described in claim 4, characterized in that: The displacement assembly includes a piston cylinder (11) mounted on a workbench (1), a piston rod (12) is slidably disposed inside the piston cylinder (11), a spring (13) for resetting is sleeved between the piston rod (12) and the piston cylinder (11), an airbag (14) is disposed between the steel brush plate (7) and the mounting plate (9), and an air pipe (15) is connected through the end of the piston cylinder (11), and the end of the air pipe (15) is connected through the airbag (14).
6. The coal crushing and screening device as described in claim 5, characterized in that: The initial position of the end of the piston rod (12) is located in the middle of the piston cylinder (11), which is used to drive the piston rod (12) to move left and right inside the piston cylinder (11).
7. The coal crushing and screening device as described in claim 6, characterized in that: An electromagnetic exhaust valve is provided at the end of the airbag (14), which is controlled by an external controller to discharge gas from inside the airbag (14).
8. The coal crushing and screening device as described in claim 7, characterized in that: The drive assembly includes a rack (16) fixedly mounted on the piston rod (12); a drive motor (23) mounted on the worktable (1), with the first rotating column (6) being drivenly connected to the output end of the drive motor (23); a reduction gearbox (17) mounted on the worktable (1), with the output end of the drive motor (23) being drivenly connected to the input end of the reduction gearbox (17), the output end of the reduction gearbox (17) being provided with a half gear (18), a reversing gearbox (19) mounted on the worktable (1), the input end of the reversing gearbox (19) being provided with a full gear (20) and an intermittent gear (21), the half gear (18) being movably meshed with the full gear (20), the intermittent gear (21) being movably meshed with the rack (16), the output end of the reversing gearbox (19) being fitted with a torsion spring (22), and the output end of the reversing gearbox (19) being drivenly connected to the second rotating column (8).
9. A coal crushing and screening device as described in claim 8, characterized in that: The intermittent gear (21) has several gaps at equal angles, which are located between every two sets of teeth, and each set of teeth has a minimum of seven teeth.
10. A coal crushing and screening device as described in claim 9, characterized in that: The workbench (1) is inclined and has a discharge port at the bottom.