Classified screening type coal mine screening machine
The multi-layer screen structure and buffer shock absorption design of the graded screening coal mine screening machine solves the problem that the existing coal mine screening machine is difficult to grade and screen, realizes multi-level screening and reduces screen damage, and improves the practicality and durability of the equipment.
Patent Information
- Application Number
- CN202422584867.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-24
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-10-24
AI Technical Summary
The existing coal screening machines are difficult to grade the screened coal, resulting in a relatively uniform screening particle size.
A graded screening coal mine screening machine was designed, which adopted a multi-layer screen structure and a vibration motor drive. The screening box was adjustable and fixed through a threaded column and a screw mechanism. Combined with the buffer structure of the guide plate, rubber block and telescopic block, multi-stage screening and buffering and shock absorption were achieved.
It realizes multi-stage screening of coal mines, improves the practicability of screening machines, reduces damage to screen mesh, and extends the service life of equipment.
Smart Images
Figure CN223367475U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of screening machines, in particular to a graded screening type coal mine screening machine. Background Art
[0002] In the coal mining industry, the application of electrical automation technology has become an important means to improve production efficiency and ensure production safety. Coal mine screening machine is a relatively common automated coal mine screening equipment. Coal mine screening machine is an important equipment used in coal mine production for screening and separating coal blocks, coal gangue, coal powder and other materials. The existing screening machine still has certain defects when in use.
[0003] In the existing technology, coal screening machines use vibration to screen coal of different sizes to meet the needs of coal production. Coal screening machines are widely used in various links such as coal mining, washing, and processing. They are of great significance to improving the quality of coal products and reducing production costs. Traditional coal screening machines have a relatively single particle size for screening coal, making it difficult to grade the screened coal. Utility Model Content
[0004] The purpose of the utility model is to provide a graded screening type coal mine screening machine to solve the problem raised in the above background technology that the coal mine screening machines currently on the market are difficult to grade and screen the screened coal.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a graded screening type coal mine screening machine, comprising: a support frame, a screen box, a vibration motor and a screen body, the top of the support frame is connected to the screen box through a spring, the front of the screen box is equipped with a vibration motor, the inner side of the screen box is equipped with a screen body, a through hole is opened in the interior of the screen box, a screening box body is provided inside the screen box, a first screen and a second screen are respectively installed inside the screening box body, a threaded column is connected to the side of the screening box body close to the through hole, a fixed block is welded to the side of the screen box close to the threaded column, the interior of the fixed block is connected to a screw rod through a bearing, the outer side of the screw rod is threadedly connected to a movable plate, and the end of the threaded column is threadedly connected to a threaded sleeve.
[0006] Preferably, a through slot matching the size of the threaded column is provided through the interior of the movable plate.
[0007] Preferably, the mesh diameter of the first screen is smaller than that of the screen body, and the mesh diameter of the second screen is smaller than that of the first screen.
[0008] Preferably, a mounting frame is welded to the top of the screen box, a baffle is welded to the inner side of the mounting frame, and a connecting block is welded to the side of the mounting frame away from the baffle.
[0009] Preferably, a rubber block is bonded to the end surface of the connecting block, and a return spring is connected to a side of the connecting block close to the rubber block.
[0010] Preferably, the end of the return spring is connected to a telescopic block, and the inner side of the mounting bracket close to the connecting block is connected to a connecting shaft.
[0011] Preferably, a material guide plate is rotatably connected to the outer side of the connecting shaft, and a material receiving box is welded to the top of the mounting frame.
[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: when the screening box body is completely placed inside the screen box, the threaded column on one side of the screening box body can be moved out from the inside of the screen box through the through hole. When the screw rod rotates, it can drive the movable plate to slide in the direction close to the screen box. When the movable plate thread slides to the maximum distance, the movable plate can be sleeved on the outside of the threaded column. The baffle can prevent the coal from splashing during the falling process. The guide plate, rubber block and telescopic block can be used to cushion the coal when it falls onto the screen body, thereby reducing the impact force of the coal on the screen body, making the screen body less likely to be damaged.
[0013] 1. The coal screening machine can make the screen body inside the screen box vibrate through the vibration motor, so as to screen the coal on the screen body. The traditional coal screening machine is difficult to grade the screened coal. When the screening box is completely placed inside the screen box, the threaded column on one side of the screening box can be moved out from the inside of the screen box through the through hole. When the screw rotates, it can drive the movable plate to slide in the direction close to the screen box. When the movable plate thread slides to the maximum distance, the movable plate can be sleeved on the outside of the threaded column, and the threaded sleeve is sleeved on the end of the threaded column, and then the threaded sleeve is Tighten it, and when the thread of the threaded sleeve slides to the specified position, one end of the threaded sleeve is close to one side of the movable plate. At this time, the threaded sleeve can be fixed on the end of the threaded column, and the screened coal can fall onto the first screen. At the same time, the vibration of the vibration motor of the screen box can drive the screening box body to vibrate, so that the first screen and the second screen can vibrate, so that the coal screened by the screen body can be graded and screened again through the first screen and the second screen. The coal screened by the screen body can be screened into coal of multiple different particle sizes, thereby meeting the purpose of coal grading and screening and improving the practicality of the coal screening machine.
[0014] 2. The overall structure of the coal screening machine is relatively simple. During the use of the coal screening machine, the coal usually falls directly on the screen body, causing the screen body to be subjected to a large impact force, which will accelerate the damage of the screen body. When the coal falls into the mounting frame through the receiving box, the coal can fall on the guide plate. Due to the gravity of the coal itself, the coal will squeeze the surface of the guide plate. When the guide plate rotates to a specified angle, the bottom of the guide plate can squeeze the top of the telescopic block, so that the telescopic block can compress the return spring. When the return spring is compressed to a certain extent, the bottom of the guide plate can squeeze the surface of the rubber block. At this time, the coal on the guide plate can fall along the surface of the guide plate onto the screen body. The baffle can prevent the coal from splashing during the falling process. The guide plate, rubber block and telescopic block can make the coal cushioned when it falls on the screen body, thereby reducing the impact force of the coal on the screen body, making the screen body less likely to be damaged. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;
[0016] Figure 2 This is a schematic diagram of the main cutaway structure of the screen box of the present invention;
[0017] Figure 3 This is a schematic diagram of the main cutaway structure of the fixing block of the utility model;
[0018] Figure 4 This is a schematic diagram of the main cutaway structure of the mounting bracket of the present invention.
[0019] In the figure: 1. Support frame; 2. Screen box; 3. Vibration motor; 4. Screen body; 5. Through hole; 6. Screen box body; 7. First screen; 8. Second screen; 9. Threaded column; 10. Fixed block; 11. Screw rod; 12. Moving plate; 13. Threaded sleeve; 14. Mounting frame; 15. Baffle; 16. Connecting block; 17. Rubber block; 18. Return spring; 19. Telescopic block; 20. Connecting shaft; 21. Material guide plate; 22. Material receiving box. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0021] See also Figure 1-Figure 3It can be seen that the utility model provides a technical solution: a graded screening type coal mine screening machine, comprising: a support frame 1, a screen box 2, a vibration motor 3 and a screen body 4, the top of the support frame 1 is connected to the screen box 2 through a spring, the front of the screen box 2 is installed with the vibration motor 3, the inner side of the screen box 2 is installed with the screen body 4, a through hole 5 is opened inside the screen box 2, and a screening box body 6 is provided inside the screen box 2, and a first screen 7 and a second screen 8 are respectively installed inside the screening box body 6, a threaded column 9 is connected to the side of the screening box body 6 close to the through hole 5, a fixed block 10 is welded to the side of the screen box 2 close to the threaded column 9, the interior of the fixed block 10 is connected to a screw rod 11 through a bearing, the outer side of the screw rod 11 is threadedly connected to a movable plate 12, the end of the threaded column 9 is threadedly connected to a threaded sleeve 13, and a through groove matching the size of the threaded column 9 is opened inside the movable plate 12, the mesh diameter of the first screen 7 is smaller than that of the screen body 4, and the mesh diameter of the second screen 8 is smaller than that of the first screen 7.
[0022] During specific implementation, the coal screening machine can make the screen body 4 inside the screen box 2 vibrate through the vibration motor 3, thereby screening the coal on the screen body 4. Traditional coal screening machines are difficult to grade the screened coal. The screening box body 6 can be pushed to the inside of the screen box 2 first. When the screening box body 6 is completely placed inside the screen box 2, the threaded column 9 on one side of the screening box body 6 can be moved out of the inside of the screen box 2 through the through hole 5. At this time, the screw rod 11 can be rotated forward. When the screw rod 11 rotates, it can drive the moving plate 1 2 is threadedly slid in the direction close to the screen box 2. When the movable plate 12 is threadedly slid to the maximum distance, the movable plate 12 can be sleeved on the outside of the threaded column 9, and the threaded sleeve 13 is sleeved on the end of the threaded column 9. The threaded sleeve 13 is then tightened so that the threaded sleeve 13 can be threadedly slid with the threaded column 9. When the threaded sleeve 13 is threadedly slid to a specified position, one end of the threaded sleeve 13 is close to one side of the movable plate 12. At this time, the threaded sleeve 13 can be fixed on the end of the threaded column 9, thereby fixing the position of the screening box body 6.
[0023] See Figure 1-Figure 3 It can be seen that after the coal is screened by the screen body 4, the screened coal can fall onto the first screen 7. At the same time, the screen box 2 can drive the screening box body 6 to vibrate due to the vibration of the vibration motor 3, so that the first screen 7 and the second screen 8 can vibrate, so that the coal screened by the screen body 4 can be graded and screened again by the first screen 7 and the second screen 8. The coal screened by the screen body 4 can be screened into coal of multiple different particle sizes, thereby meeting the purpose of coal grading screening and improving the practicality of the coal screening machine.
[0024] See Figure 1 and Figure 4It can be seen that a mounting bracket 14 is welded to the top of the screen box 2, a baffle 15 is welded to the inner side of the mounting bracket 14, a connecting block 16 is welded to the side of the mounting bracket 14 away from the baffle 15, a rubber block 17 is bonded to the end surface of the connecting block 16, a return spring 18 is connected to the side of the connecting block 16 close to the rubber block 17, and a telescopic block 19 is connected to the end of the return spring 18. A connecting shaft 20 is connected to the inner side of the mounting bracket 14 close to the connecting block 16, and a material guide plate 21 is rotatably connected to the outer side of the connecting shaft 20. A material receiving box 22 is welded to the top of the mounting bracket 14, and a sliding structure is formed between the telescopic block 19 and the connecting block 16.
[0025] During specific implementation, the overall structure of the coal mine screening machine is relatively simple. During the use of the coal mine screening machine, the coal mine usually falls directly on the screen body 4, resulting in a large impact force on the screen body 4, which will accelerate the damage of the screen body 4. When the coal mine falls into the mounting frame 14 through the receiving box 22, the coal mine can fall on the guide plate 21. Due to the gravity of the coal mine itself, the coal mine will squeeze the surface of the guide plate 21. When the guide plate 21 is squeezed, it can be rotated by the connecting shaft 20. When the guide plate 21 rotates to a specified angle, the bottom of the guide plate 21 can squeeze the top of the telescopic block 19, so that the telescopic block 19 can compress the return spring 18. When the return spring 18 is compressed to a certain extent, the bottom of the guide plate 21 can squeeze the surface of the rubber block 17, so that the rubber block 17 can produce extrusion deformation. At this time, the coal on the guide plate 21 can fall onto the screen body 4 along the surface of the guide plate 21, and the baffle 15 can prevent the coal mine from splashing during the falling process.
[0026] See Figure 1 and Figure 4 It can be seen that the guide plate 21, rubber block 17 and telescopic block 19 can cushion the coal when it falls onto the screen body 4, thereby reducing the impact of the coal on the screen body 4 and making the screen body 4 less likely to be damaged.
[0027] In summary, when using the graded screening type coal screening machine, when the screening box body 6 is completely placed inside the screen box 2, the threaded column 9 on one side of the screening box body 6 can be moved out from the inside of the screen box 2 through the through hole 5. At this time, the screw rod 11 can be rotated forward. After the coal is screened by the screen body 4, the screened coal can fall onto the first screen 7. At the same time, the screen box 2 can drive the screening box body 6 to vibrate due to the vibration of the vibration motor 3, so that the first screen 7 and the second screen 8 can vibrate, so that the coal screened by the screen body 4 can pass through. The coal is screened again through the first sieve 7 and the second sieve 8 for graded screening. The coal screened by the screen body 4 can be screened into coal of multiple different particle sizes, thereby meeting the purpose of coal grading screening and improving the practicality of the coal screening machine. The guide plate 21, the rubber block 17 and the telescopic block 19 can make the coal cushioned when it falls onto the screen body 4, thereby reducing the impact force of the coal on the screen body 4, making the screen body 4 less likely to be damaged. The contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.
[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A graded screening type coal mine screening machine, comprising: The support frame (1), the screen box (2), the vibration motor (3) and the screen body (4) are characterized by: The top of the support frame (1) is connected to a screen box (2) via a spring, a vibration motor (3) is installed at the front of the screen box (2), and a screen body (4) is installed inside the screen box (2); A through hole (5) is provided inside the screen box (2); a screening box body (6) is provided inside the screen box (2); a first screen (7) and a second screen (8) are respectively installed inside the screening box body (6); a threaded column (9) is connected to the side of the screening box body (6) close to the through hole (5); a fixing block (10) is welded to the side of the screen box (2) close to the threaded column (9); a screw rod (11) is connected to the inside of the fixing block (10) through a bearing; the outer side of the screw rod (11) is threadedly connected to a movable plate (12); and the end of the threaded column (9) is threadedly connected to a threaded sleeve (13).
2. A graded screening type coal mine screening machine according to claim 1, characterized in that: A through slot matching the size of the threaded column (9) is provided through the interior of the movable plate (12).
3. The grading screening type coal mine screening machine according to claim 1, characterized in that: The mesh diameter of the first screen (7) is smaller than that of the screen body (4), and the mesh diameter of the second screen (8) is smaller than that of the first screen (7).
4. The grading screening type coal mine screening machine according to claim 1, characterized in that: A mounting frame (14) is welded to the top of the screen box (2), a baffle (15) is welded to the inner side of the mounting frame (14), and a connecting block (16) is welded to the side of the mounting frame (14) away from the baffle (15).
5. A graded screening type coal mine screening machine according to claim 4, characterized in that: A rubber block (17) is bonded to the end surface of the connecting block (16), and a return spring (18) is connected to the side of the connecting block (16) close to the rubber block (17).
6. A graded screening type coal mine screening machine according to claim 5, characterized in that: The end of the return spring (18) is connected to a telescopic block (19), and the inner side of the mounting frame (14) close to the connecting block (16) is connected to a connecting shaft (20).
7. A graded screening type coal mine screening machine according to claim 6, characterized in that: A material guide plate (21) is rotatably connected to the outer side of the connecting shaft (20), and a material receiving box (22) is welded to the top of the mounting frame (14).