Coal mine screening box
By adopting a combination design of vibration plate, reciprocating screw and crushing rod in the coal mine screening box, the problem of coal blocks is solved, screening efficiency is improved, and safety problems and waste are prevented.
Patent Information
- Application Number
- CN202421348200.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-13
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-06-13
AI Technical Summary
When screening existing coal mine screening boxes, coal blocks are prone to become stuck, resulting in the impact of screening effect and efficiency.
A coal mine screening box is designed, using a combination of a vibration plate and a vibration motor, combining a jamming mechanism of a reciprocating screw and a crushing rod, and moving back and forth in the fine screening port through the crushing rod, crushing the stuck coal blocks and ejecting to prevent jamming.
It effectively improves the screening efficiency, prevents the coal block from being stuck, ensures the normal operation of the device, and prevents debris from flying out through protective mechanisms, avoiding safety issues and waste.
Smart Images
Figure CN222678722U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coal mine screening, in particular to a coal mine screening box. Background Art
[0002] Coal mining areas are areas where humans mine coal resources in coal-rich mining areas. They are generally divided into underground coal mines and open-pit coal mines. Coal mines are non-renewable energy with very high energy value. In my country, they are basic energy and important industrial raw materials. Newly mined coal mines are difficult to use directly because of the many impurities and uneven quality of the raw coal. They need to be processed before they can be put into use. In the process of processing, in order to improve the productivity of the crusher and avoid over-crushing, as well as to improve the separation effect, the coal mines need to be screened in the dehydration, desludging, and de-drugging process links of the processing. The main screening method is to screen according to the different sizes of coal mines.
[0003] When the existing coal mine screening box is screening, the screening openings of different sizes are prone to coal blocks getting stuck, which affects the screening effect and efficiency.
[0004] Therefore, the utility model provides a coal mine screening box to solve the above problems. Utility Model Content
[0005] In view of the deficiencies in the prior art, the utility model provides a coal mine screening box to solve the above problems.
[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a coal mine screening box, including a box body and a workbench arranged on the upper wall of the box body, a vibration plate is arranged on the upper wall of the workbench, a vibration motor is arranged in the box body, the vibration plate and the vibration motor are connected to each other, a feed barrel is arranged at the upper end of the vibration plate, a fine screening port and a coarse screening port are arranged at the end of the vibration plate away from the feed barrel, a recovery box is fixed at the end of the vibration plate, and an anti-stuck mechanism is arranged at the fine screening port;
[0007] The anti-jamming mechanism comprises a rotating chamber provided in the side wall of the fine screening port, a reciprocating screw is rotated in the rotating chamber, one end of the reciprocating screw is connected to a motor, the motor is arranged at the outer wall of the workbench, a moving block is matched at the side wall of the reciprocating screw, a breaking rod is fixed on the side wall of the moving block, the breaking rod extends out of the rotating chamber and is arranged in the fine screening port;
[0008] A protective mechanism is also provided above the fine screening opening.
[0009] Preferably, the fine screening port is arranged at an end close to the feeding barrel, and the coarse screening port is arranged at an end far from the feeding barrel.
[0010] Preferably, the cross sections of the rotating cavity and the moving block are arranged in a matching square shape, and the side wall of the moving block and the inner wall of the rotating cavity fit each other.
[0011] Preferably, a sliding cavity is provided on the other side wall of the fine screening opening, and the end of the crushing rod away from the moving block slides within the sliding cavity.
[0012] Preferably: the protection mechanism comprises a telescopic protection plate with one end fixedly arranged on the inner wall of the workbench, a slide groove is provided at the lower wall of the telescopic protection plate, a slider is provided in the slide groove, a connecting rod is fixedly provided at the lower end of the slider, and the lower end of the connecting rod is fixedly connected to the breaking rod.
[0013] Preferably, a magnetic strip is fixedly provided at one end of the telescopic protective plate away from the side wall of the workbench, and the telescopic protective plate and the magnetic strip are integrally formed.
[0014] Beneficial Effects
[0015] The utility model provides a coal mine screening box. Compared with the prior art, it has the following beneficial effects:
[0016] (1) The coal mine screening box is rotated by a reciprocating screw, which drives the crushing rod to move back and forth in the fine screening port, so as to crush and eject the coal blocks stuck at the fine screening port, thereby improving the screening efficiency, effectively preventing the coal blocks from getting stuck, and ensuring the normal operation of the device.
[0017] (2) The coal mine screening box can continue to move back and forth through the crushing rod, and the slider can continue to move in the slide slot, which will not hinder the normal operation of the crushing rod. When the crushing rod crushes the coal block, the telescopic protective plate can shield the upper part of the crushing part to prevent debris from flying out, thereby preventing waste and avoiding safety problems. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall structure of a coal mine screening box proposed by the utility model;
[0019] Figure 2 This is a schematic diagram of the overall structure of a coal mine screening box proposed by the utility model from another angle;
[0020] Figure 3 This is a schematic diagram of the overall structure of a coal mine screening box proposed by the utility model from another angle;
[0021] Figure 4 The utility model is a structural schematic diagram of a telescopic protective plate in a coal mine screening box.
[0022] In the figure, 1, workbench; 2, box body; 3, feed barrel; 4, vibration plate; 5, fine screening port; 6, coarse screening port; 7, telescopic protective plate; 8, recovery box; 9, motor; 10, vibration motor; 11, rotating chamber; 12, reciprocating screw rod; 13, moving block; 14, breaking rod; 15, sliding chamber; 16, connecting rod; 17, magnetic strip. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] See also Figure 1-4 A coal mine screening box comprises a box body 2 and a workbench 1 arranged on the upper wall of the box body 2, a vibrating plate 4 is arranged on the upper wall of the workbench 1, a vibrating motor 10 is arranged in the box body 2, the vibrating plate 4 and the vibrating motor 10 are connected to each other, a feeding cylinder 3 is arranged at the upper end of the vibrating plate 4, a fine screening port 5 and a coarse screening port 6 are arranged at the end of the vibrating plate 4 away from the feeding cylinder 3, a recovery box 8 is fixed at the end of the vibrating plate 4, and an anti-stuck mechanism is arranged at the fine screening port 5;
[0025] The anti-jamming mechanism includes a rotating chamber 11 opened in the side wall of the fine screening port 5, a reciprocating screw 12 rotates in the rotating chamber 11, one end of the reciprocating screw 12 is connected to a motor 9, the motor 9 is arranged at the outer wall of the workbench 1, a moving block 13 is matched at the side wall of the reciprocating screw 12, a breaking rod 14 is fixed on the side wall of the moving block 13, the breaking rod 14 extends out of the rotating chamber 11 and is arranged in the fine screening port 5;
[0026] While vibrating, the motor 9 is turned on to drive the reciprocating screw 12 to rotate. When the reciprocating screw 12 rotates, the crushing rod 14 is driven to move back and forth in the fine screening opening 5, so as to crush and eject the coal blocks stuck at the fine screening opening 5, thereby improving the screening efficiency, effectively preventing the coal blocks from getting stuck, and ensuring the normal operation of the device;
[0027] A protective mechanism is also provided above the fine screening opening 5 .
[0028] In an optional embodiment, the fine screening port 5 is arranged at an end close to the feeding barrel 3 , and the coarse screening port 6 is arranged at an end far from the feeding barrel 3 .
[0029] It should be noted that, as the vibration plate 4 vibrates, it moves toward the end away from the feed barrel 3, and the coal blocks that cannot pass through the fine screening port 5 and the coarse screening port 6 enter the recovery box 8 to be re-crushed and poured into the feed barrel 3 again. The larger coal blocks pass through the fine screening port 5 and fall from the coarse screening port 6, and the smaller coal blocks fall from the fine screening port 5, thereby achieving the screening function.
[0030] In an optional embodiment, the cross-sections of the rotating chamber 11 and the moving block 13 are arranged in a matching square shape, and the side wall of the moving block 13 and the inner wall of the rotating chamber 11 are in contact with each other.
[0031] It should be noted that the motor 9 drives the reciprocating screw 12 to rotate, and when the reciprocating screw 12 rotates, it drives the moving block 13 to move, and then drives the crushing rod 14 to move back and forth in the fine screening port 5.
[0032] In an optional embodiment, a sliding cavity 15 is provided on the other side wall of the fine screening opening 5 , and one end of the crushing rod 14 away from the moving block 13 slides within the sliding cavity 15 in a limited position.
[0033] It should be noted that both ends of the breaker bar 14 are protected at the same time, thereby ensuring the stability of the structure of the breaker bar 14 itself.
[0034] In an optional embodiment: the protection mechanism includes a telescopic protection plate 7 with one end fixed on the inner wall of the workbench 1, a slide groove is provided at the lower wall of the telescopic protection plate 7, a sliding block is provided in the slide groove, a connecting rod 16 is fixed at the lower end of the sliding block, and the lower end of the connecting rod 16 is fixedly connected to the breaking rod 14.
[0035] It should be noted that when the breaker rod 14 just starts to move from one side wall of the workbench 1 toward the other side wall, it will drive one end of the telescopic protective plate 7 to move through the connecting rod 16, and the telescopic protective plate 7 will extend.
[0036] In an optional embodiment: a magnetic strip 17 is fixedly provided at one end of the telescopic protective plate 7 away from the side wall of the workbench 1 , and the telescopic protective plate 7 and the magnetic strip 17 are integrally formed.
[0037] It should be noted that when the breaking rod 14 moves to the other side, it also drives the telescopic protective plate 7 to stretch to the other side wall of the workbench 1, so that the magnetic strip 17 is adsorbed on the side wall of the workbench 1, so that the telescopic protective plate 7 is fully unfolded above the fine screening port 5.
[0038] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.
[0039] When the device is in use, the vibration motor 10 is turned on to drive the vibration plate 4 to vibrate. At this time, the coal blocks to be screened are poured from the feed barrel 3. As the vibration plate 4 vibrates, it moves toward the end away from the feed barrel 3. The coal blocks that cannot pass through the fine screening port 5 and the coarse screening port 6 enter the recovery box 8 to be crushed again and poured from the feed barrel 3 again. The larger coal blocks pass through the fine screening port 5 and fall from the coarse screening port 6, and the smaller coal blocks fall from the fine screening port 5, thereby achieving the screening function.
[0040] In the above process, due to the small interval of the fine screening opening 5, the coal lumps of moderate size are easily stuck at the fine screening opening 5. If not handled in time, the screening effect will be affected:
[0041] In this case, while vibrating, the motor 9 is turned on to drive the reciprocating screw 12 to rotate. When the reciprocating screw 12 rotates, the crushing rod 14 is driven to move back and forth in the fine screening opening 5, so as to crush and eject the coal blocks stuck at the fine screening opening 5, thereby improving the screening efficiency, effectively preventing the coal blocks from getting stuck, and ensuring the normal operation of the device;
[0042] And when the crushing rod 14 just starts to move, moving from one side wall of the workbench 1 toward the other side wall, it will drive one end of the telescopic protective plate 7 to move through the connecting rod 16, and the telescopic protective plate 7 will extend. When the crushing rod 14 moves to the other side, it will also drive the telescopic protective plate 7 to stretch to the other side wall of the workbench 1, so that the magnetic strip 17 is adsorbed on the side wall of the workbench 1. At this time, the telescopic protective plate 7 is fully unfolded above the fine screening port 5, and as the crushing rod 14 continues to move back and forth, the slider continues to move in the slide slot, which will not hinder the normal operation of the crushing rod 14. When the crushing rod 14 crushes the coal block, the telescopic protective plate 7 blocks the top of the crushing part to prevent debris from flying out, thereby preventing waste and avoiding safety issues.
[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A coal mine screening box, comprising a box body (2) and a workbench (1) arranged on the upper wall of the box body (2), a vibration plate (4) is arranged on the upper wall of the workbench (1), a vibration motor (10) is arranged in the box body (2), the vibration plate (4) and the vibration motor (10) are connected to each other, and a feeding barrel (3) is arranged at one end above the vibration plate (4), characterized in that: The end of the vibration plate (4) away from the feeding barrel (3) is provided with a fine screening port (5) and a coarse screening port (6), a recovery box (8) is fixed to the end of the vibration plate (4), and an anti-jamming mechanism is provided at the fine screening port (5); The anti-jamming mechanism comprises a rotating chamber (11) provided in the side wall of the fine screening opening (5), a reciprocating screw (12) rotating in the rotating chamber (11), one end of the reciprocating screw (12) being connected to a motor (9), the motor (9) being arranged at the outer wall of the workbench (1), a moving block (13) being matched at the side wall of the reciprocating screw (12), a breaking rod (14) being fixedly provided on the side wall of the moving block (13), the breaking rod (14) extending out of the rotating chamber (11) and being arranged in the fine screening opening (5); A protective mechanism is also provided above the fine screening opening (5).
2. A coal mine screening box according to claim 1, characterized in that: The fine screening port (5) is arranged at an end close to the feeding barrel (3), and the coarse screening port (6) is arranged at an end far from the feeding barrel (3).
3. A coal mine screening box according to claim 1, characterized in that: The cross sections of the rotating chamber (11) and the moving block (13) are arranged in a matching square shape, and the side wall of the moving block (13) and the inner wall of the rotating chamber (11) are fitted to each other.
4. A coal mine screening box according to claim 1, characterized in that: A sliding cavity (15) is provided on the other side wall of the fine screening opening (5), and one end of the crushing rod (14) away from the moving block (13) slides within the sliding cavity (15) in a limited manner.
5. A coal mine screening box according to claim 1, characterized in that: The protection mechanism comprises a telescopic protection plate (7) with one end fixedly arranged on the inner wall of the workbench (1); a slide groove is provided at the lower wall of the telescopic protection plate (7); a slider is provided in the slide groove; a connecting rod (16) is fixedly provided at the lower end of the slider; and the lower end of the connecting rod (16) is fixedly connected to the breaking rod (14).
6. A coal mine screening box according to claim 5, characterized in that: A magnetic strip (17) is fixedly provided at one end of the telescopic protective plate (7) away from the side wall of the workbench (1), and the telescopic protective plate (7) and the magnetic strip (17) are integrally formed.