A multi-stage screening device for mining and processing

Abstract

The application relates to the technical field of screening devices, and discloses a multi-stage screening device for mine exploitation and processing, which comprises a walking support, walking wheels are rotatably connected to the bottom of the walking support, a buffer base is fixedly connected to the top of the walking support, a damping mechanism is throughly and threadedly connected to the bottom of the inner wall of a placing groove, a buffer mechanism is throughly and threadedly connected to one side of the inner wall of the placing groove, a multi-stage screening device is fixedly connected to the bottom of the inner wall of a screening box, dust removal devices are fixedly connected to the parts on the top of the screening box and located on the two sides of a crusher, the multi-stage screening device for mine exploitation and processing is provided with the damping mechanism, so that vibration of the multi-stage screening device can be directly transmitted to the equipment main body to avoid damage and prolong the service life of the equipment, the multi-stage screening device is arranged, so that precise separation can be realized, and high-value fine particles can be prevented from being mixed with waste rock and discarded.

Description

Technical Field

[0001] This invention relates to the field of screening equipment technology, specifically a multi-stage screening device for mining and processing. Background Technology

[0002] In the entire process of mineral resource development, mining and processing are the key links connecting resource extraction and industrial utilization. As the core equipment in this process, multi-stage screening equipment has always been developed and applied around the needs of efficient utilization of mineral resources. With the acceleration of global industrialization, the demand for various mineral resources continues to rise, the scale of ore mining continues to expand, and the properties of ores are becoming more complex and variable. This has put forward practical requirements for the technological upgrading of screening equipment. Different types of mineral resources have different requirements for screening accuracy and efficiency. In metal mines, ores such as iron ore and copper ore need to be screened in multiple stages to achieve the initial separation of useful minerals and gangue, so as to provide qualified raw materials for subsequent beneficiation operations.

[0003] Traditional screening equipment is relatively simple when screening ores, and can only screen ores once. It often misses high-value fine particles of ores. In addition, a lot of dust is generated during the screening process, and long-term inhalation of dust can seriously harm the health of workers. Summary of the Invention

[0004] To solve the above technical problems, the present invention is implemented through the following technical solution: a multi-stage screening equipment for mining and processing, including a walking support, a walking wheel rotatably connected through the bottom of the walking support, a buffer base fixedly connected to the top of the walking support, a placement groove opened on the top of the buffer base, a shock-absorbing mechanism threaded through and connected to the bottom of the inner wall of the placement groove, a buffer mechanism threaded through and connected to one side of the inner wall of the placement groove, a screening box fixedly connected to the top of the shock-absorbing mechanism, the side of the buffer mechanism located inside the placement groove fixedly connected to the screening box, a multi-stage screening device fixedly connected to the bottom of the inner wall of the screening box, a crusher fixedly connected to the top of the screening box, the discharge port of the crusher communicating with the screening box, and dust removal devices fixedly connected to the portions of the top of the screening box located on both sides of the crusher.

[0005] Preferably, the multi-stage screening device includes a first support, a connecting ring plate fixedly connected to the top of the first support, a dual-axis drive motor fixedly connected to one side of the first support, a rotating shaft fixedly connected to the drive shaft of the dual-axis drive motor, a first rotating frame rotatably connected to the end of the rotating shaft away from the dual-axis drive motor, and a second rotating frame rotatably connected to the end of the first rotating frame away from the rotating shaft. A first fixing block and a second fixing block are fixedly connected to the bottom of the connecting ring plate respectively. A first triangular plate is rotatably connected to one side of the first fixing block, and a second triangular plate is rotatably connected to one side of the second fixing block. A first connecting rod is rotatably connected to the bottom of one side of the first triangular plate. The bottom of the first triangular plate away from the first connecting rod is rotatably connected to the second rotating frame. A second connecting rod is rotatably connected to the top of one side of the first triangular plate. A first sieve plate is fixedly connected to the top of the second connecting rod. Two sets of second connecting rods are provided and symmetrically distributed at the bottom of the first sieve plate. The bottom of one side of the second triangular plate is rotatably connected to the first connecting rod, and the top of one side of the second triangular plate is rotatably connected to the second connecting rod. A first sieve hole is opened at the bottom of the first sieve plate. A first buffer spring is fixedly connected to the bottom of the first sieve plate. The first buffer spring is located away from the first sieve plate. One end of the first support is fixedly connected to the connecting ring plate. A second screen plate is fixedly connected to the side of the second connecting rod away from the first triangular plate. A second screen hole is opened at the top of the second screen plate. A second buffer spring is fixedly connected to the top of the second screen plate. The end of the second buffer spring away from the second screen plate is fixedly connected to the bottom of the connecting ring plate. A pushing mechanism is fixedly connected to the inner wall of the first support. A first collection box is fixedly connected to the top of the connecting ring plate. A second collection box is fixedly connected to the side of the inner wall of the first support away from the pushing mechanism. The first support is fixedly connected to the bottom of the inner wall of the screening box. Multiple sets of the first buffer springs are arranged symmetrically. The first screen plate is distributed at the bottom, and the second buffer spring is provided in multiple sets and symmetrically distributed at the top of the second screen plate. The first collection box is located below the first screen plate, and the second collection box is located below the second screen plate. The dual-shaft drive motor drives the rotating shaft to rotate. Through the linkage of the first and second rotating frames, the first and second triangular plates, and the connecting rod, the first screen plate is made to shake up and down under the action of the first buffer spring, so that fine particles are screened from the first screen hole to the second screen plate. At the same time, the first connecting rod drives the second triangular plate and the second connecting rod to move, so that the second screen plate shakes synchronously under the action of the second buffer spring, thereby realizing multi-stage precise screening of ore particles.

[0006] Preferably, the pushing mechanism includes a slide rail, an electric slider is slidably connected to the inner wall of the slide rail, a fixed plate is fixedly connected to one side of the electric slider, a fixed end of a pneumatic piston rod is fixedly connected to the top of the fixed plate, and a shovel plate is fixedly connected to the movable end of the pneumatic piston rod. Two sets of slide rails are provided and symmetrically distributed on one side of the inner wall of the first support, and two sets of pneumatic piston rods are provided and symmetrically distributed on the top of the fixed plate. After screening, the electric slider moves along the slide rail to move the fixed plate and the pneumatic piston rod to the end of the target screen plate (first or second screen plate). Then, the movable end of the pneumatic piston rod extends and pushes the shovel plate to push the ore particles on the screen plate downwards along the plate surface, accurately falling into the corresponding collection box.

[0007] Preferably, the dust removal device includes a second support, with a dust removal water tank fixedly connected to the top of the second support. A dust removal filter plate is fixedly connected to the top of the dust removal water tank. A connecting pipe is connected to one side of the dust removal water tank, and the end of the connecting pipe away from the dust removal water tank is connected to the outlet of a dust removal fan. A suction pipe is connected to the inlet of the dust removal fan. The second support is fixedly connected to the top of the screening box located on both sides of the crusher. The suction pipe is connected to the screening box. When the crusher and screening device generate dust during operation, the dust removal fan starts and sucks the dust in the screening box through the suction pipe. The dust is then transported to the dust removal water tank through the fan outlet and the connecting pipe. The water in the tank absorbs most of the dust, and the remaining gas containing trace amounts of dust is filtered a second time by the dust removal filter plate, and finally, the clean gas is discharged into the air.

[0008] Preferably, the shock absorption mechanism includes a third bracket, a first connecting plate fixedly connected to the bottom of the third bracket, a first motor fixedly connected to the bottom of the first connecting plate, a drive shaft of the first motor passing through the first connecting plate and fixedly connected to a drive gear, a driven gear meshing with the side of the drive gear, a first threaded rod passing through and threadedly connected to the bottom of the driven gear, a sliding rod rotatably connected to the top of the first threaded rod, a sliding sleeve sleeved and slidably connected to the sliding rod, a second connecting plate fixedly connected to the top of the sliding sleeve, a shock-absorbing spring fixedly connected to the top of the second connecting plate, the bottom of the sliding sleeve and the second connecting plate located inside the shock-absorbing spring, the third bracket fixedly connected to the bottom of the buffer base, the top of the second connecting plate fixedly connected to the bottom of the screening box, the top of the driven gear rotatably connected to the bottom of the buffer base, the first threaded rod passing through the buffer base and extending into the placement groove, and the first threaded rod being threadedly connected to the buffer base.

[0009] Preferably, the buffer mechanism includes a second threaded rod, on which a third connecting plate is sleeved and threadedly connected. Limiting rods are slidably connected to the sides of the third connecting plate located on both sides of the second threaded rod. A drive shaft of a second motor is fixedly connected to one end of the second threaded rod. A third buffer spring is fixedly connected to the side of the third connecting plate away from the second motor. The second threaded rod is located inside the third buffer spring. A fourth connecting plate is fixedly connected to the end of the third buffer spring away from the third connecting plate. The second threaded rod passes through one side of the buffer base and is fixedly connected to the buffer base. The limiting rod passes through the buffer base and is fixedly connected to the buffer base. The second motor is fixedly connected to one side of the buffer base. The third connecting plate is located inside the placement groove. The side of the fourth connecting plate away from the third buffer spring is fixedly connected to the screening box.

[0010] This invention provides a multi-stage screening device for mining and processing. It has the following beneficial effects: 1. This multi-stage screening equipment for mining and processing is equipped with multiple screening devices. Its wheels allow for flexible adjustment of the equipment's working position based on changes in the mining area, significantly improving its adaptability. Before processing, the ore is first crushed by a crusher, breaking large pieces into smaller particles. This effectively reduces the load on subsequent screening stages, preventing excessive impact or clogging of the screen plates by large particles and extending their service life. After the crushed ore falls onto the first screen plate, a dual-shaft drive motor, through the rotating shaft, first rotating frame, and second rotating frame, drives the first triangular plate to reciprocate. The first connecting rod drives the first screen plate to vibrate up and down under the action of the first buffer spring, initially separating fine particles and causing them to fall onto the second screen plate. At the same time, the first connecting rod drives the second triangular plate and the second connecting rod to vibrate synchronously under the action of the second buffer spring, achieving two-stage precise grading of the ore. This multi-stage vibrating screening design can accurately separate ore according to particle size, ensuring that ores of different specifications can be effectively recovered, reducing resource waste, and improving ore utilization. Moreover, compared with static screening, the vibrating screening method significantly speeds up the speed at which the ore passes through the screen holes, significantly improving the overall screening efficiency.

[0011] 2. The multi-stage screening equipment for mining and processing is equipped with a pushing mechanism. After the first and second screen plates have completed screening, there is no need for manual cleaning of the ore particles on the screen plates. Simply activate the electric slider to drive it to slide within the slide rail, moving the fixed plate and pneumatic piston rod to the end of the target screen plate. Then, activate the pneumatic piston rod, and its movable end extends to push the shovel plate, pushing the screened ore particles on the screen plate surface into the corresponding first and second collection boxes. The entire process is automated, avoiding the heavy labor of manual shoveling in mining screening operations and significantly reducing the labor intensity of workers. At the same time, automated collection can continuously connect the screening process without stopping the machine to wait for manual cleaning, reducing operation interruption time, significantly improving ore collection efficiency, and ensuring the continuity of screening operations.

[0012] 3. The multi-stage screening equipment used in this mining and processing facility is equipped with a dust removal device. During the mining and screening process, the crusher crushes the ore, and the screen plate vibrates during screening, generating a large amount of dust. If the dust spreads into the working environment, it can easily be inhaled by workers, causing respiratory diseases. Furthermore, dust accumulation may affect the operation of equipment components. After the equipment is started, the dust removal fan sucks the dust from the screening box through the suction pipe, and then transports it through the air outlet to the connecting pipe, finally discharging it into the dust removal water tank. The water in the tank adsorbs the dust, initially purifying the dust-laden gas. Subsequently, the gas passes through the dust removal filter plate for secondary filtration to remove residual fine dust, ensuring that the gas finally discharged into the air meets environmental protection requirements. This dust treatment system can effectively control dust diffusion and reduce the health hazards of dust to workers.

[0013] 4. The multi-stage screening equipment used in this mine's mining and processing is equipped with a vibration damping mechanism. During operation, the crushing action of the pulverizer and the shaking of the screen plate will generate severe vibrations. Long-term vibration can easily lead to loosening and wear of equipment parts (such as the screen plate fixing structure and motor connection parts), and even cause equipment displacement, affecting screening accuracy. For longitudinal vibration damping, the first motor is started, and its drive shaft drives the active gear and driven gear to rotate, causing the first threaded rod to rotate in the buffer base and move towards the placement groove. This pushes the sliding rod to drive the sliding sleeve to slide, compressing the damping spring. The spring force is used to counteract the longitudinal vibration generated by the screening box. For lateral vibration damping, the second motor is started, driving the second threaded rod to rotate, causing the third connecting plate to move towards the screening box under the limitation of the limit rod. This causes the third buffer spring to extend and retract, and the spring force is used to buffer lateral vibration. The bidirectional vibration damping design can significantly reduce the vibration amplitude of the equipment during operation, avoid vibration damage to the equipment structure, reduce the frequency of parts maintenance and replacement, and extend the service life of the equipment. At the same time, the reduced vibration can ensure stable screen plate shaking and controllable ore screening path, avoid screen plate displacement due to vibration affecting screening accuracy, and improve the stability of equipment operation. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the multi-stage screening equipment for mining and processing according to the present invention; Figure 2 This is a schematic diagram of the internal structure of the multi-stage screening equipment for mining and processing according to the present invention; Figure 3 This is a schematic diagram of the connection structure of the multi-stage screening device of the present invention; Figure 4 This is a schematic diagram of the connection structure of the feeding mechanism of the present invention; Figure 5 This is a schematic diagram of the connection structure of the dust removal device of the present invention; Figure 6 This is a schematic diagram of the connection structure of the shock absorption mechanism of the present invention; Figure 7 This is a schematic diagram of the shock absorption mechanism of the present invention; Figure 8 This is a schematic diagram of the buffer mechanism structure of the present invention.

[0015] In the diagram: 1. Walking support; 2. Walking wheels; 3. Buffer base; 4. Placement slot; 5. Shock absorption mechanism; 6. Buffer mechanism; 7. Screening box; 8. Multi-stage screening device; 9. Crusher; 10. Dust removal device; 81. First support; 82. Connecting ring plate; 83. Pushing mechanism; 84. Rotating shaft; 85. First rotating frame; 86. Second rotating frame; 87. First fixing block; 88. Second fixing block; 89. First triangular plate; 810. Second triangular plate; 811. First connecting rod; 812. Second connecting rod; 813. First screen plate; 814. First screen hole; 815. First buffer spring; 816. Second screen plate; 817. Second screen hole; 818. Second buffer spring; 819. Dual-shaft drive motor; 8 20. First collection box; 821. Second collection box; 831. Slide rail; 832. Electric slider; 833. Fixed plate; 834. Pneumatic piston rod; 835. Shovel plate; 101. Second bracket; 102. Dust removal water tank; 103. Dust removal filter plate; 104. Connecting pipe; 105. Dust removal fan; 106. Suction pipe; 51. Third bracket; 52. First connecting plate; 53. First motor; 54. Shock-absorbing spring; 55. Drive gear; 56. Driven gear; 57. First threaded rod; 58. Sliding rod; 59. Sliding sleeve; 510. Second connecting plate; 61. Second threaded rod; 62. Third connecting plate; 63. Limiting rod; 64. Second motor; 65. Third buffer spring; 66. Fourth connecting plate. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] For the first embodiment, please refer to... Figures 1-3This invention provides a technical solution: a multi-stage screening device for mining and processing, comprising a walking support 1, with a walking wheel 2 rotatably connected to the bottom of the walking support 1, a buffer base 3 fixedly connected to the top of the walking support 1, a placement groove 4 opened on the top of the buffer base 3, a shock-absorbing mechanism 5 threadedly connected to the bottom of the inner wall of the placement groove 4, a buffer mechanism 6 threadedly connected to one side of the inner wall of the placement groove 4, a screening box 7 fixedly connected to the top of the shock-absorbing mechanism 5, the buffer mechanism 6 being located inside the placement groove 4 and fixedly connected to the screening box 7, a multi-stage screening device 8 fixedly connected to the bottom of the inner wall of the screening box 7, a crusher 9 fixedly connected to the top of the screening box 7, the discharge port of the crusher 9 communicating with the screening box 7, and the top of the screening box 7 being located at the crusher Dust removal devices 10 are fixedly connected to both sides of the 9. The multi-stage screening device 8 includes a first support 81. A connecting ring plate 82 is fixedly connected to the top of the first support 81. A dual-axis drive motor 819 is fixedly connected to one side of the first support 81. A rotating shaft 84 is fixedly connected to the drive shaft of the dual-axis drive motor 819. A first rotating frame 85 is rotatably connected to the end of the rotating shaft 84 away from the dual-axis drive motor 819. A second rotating frame 86 is rotatably connected to the end of the first rotating frame 85 away from the rotating shaft 84. A first fixing block 87 and a second fixing block 88 are fixedly connected to the bottom of the connecting ring plate 82. A first triangular plate 89 is rotatably connected to one side of the first fixing block 87. A second triangular plate 810 is rotatably connected to one side of the second fixing block 88. A first connecting rod 811 is rotatably connected to the bottom side of the first triangular plate 89. The bottom side of the first triangular plate 89 away from the first connecting rod 811 is rotatably connected to the second rotating frame 86. A second connecting rod 812 is rotatably connected to the top side of the first triangular plate 89. A first sieve plate 813 is fixedly connected to the top of the second connecting rod 812. Two sets of second connecting rods 812 are provided and symmetrically distributed at the bottom of the first sieve plate 813. A bottom side of the second triangular plate 810 is rotatably connected to the first connecting rod 811. The top side of the second triangular plate 810 is rotatably connected to the second connecting rod 812. A first sieve hole 814 is opened at the bottom of the first sieve plate 813. A first buffer spring 815 is fixedly connected to the bottom of the first sieve plate 813. The end of the first buffer spring 815 away from the first sieve plate 813 is connected to the connecting rod 814. A connecting ring plate 82 is fixedly connected. A second screen plate 816 is fixedly connected to the side of the second connecting rod 812 away from the first triangular plate 89. A second screen hole 817 is opened at the top of the second screen plate 816. A second buffer spring 818 is fixedly connected to the top of the second screen plate 816. The end of the second buffer spring 818 away from the second screen plate 816 is fixedly connected to the bottom of the connecting ring plate 82. A pushing mechanism 83 is fixedly connected to the inner wall of the first bracket 81. A first collection box 820 is fixedly connected to the top of the connecting ring plate 82. A second collection box 821 is fixedly connected to the side of the inner wall of the first bracket 81 away from the pushing mechanism 83. The first bracket 81 is fixedly connected to the bottom of the inner wall of the screening box 7. Multiple sets of first buffer springs 815 are provided and symmetrically distributed at the bottom of the first screen plate 813.Multiple sets of second buffer springs 818 are symmetrically distributed on the top of the second sieve plate 816. The first collection box 820 is located below the first sieve plate 813, and the second collection box 821 is located below the second sieve plate 816.

[0018] In use, the working environment at mining sites is often mobile. The wheels 2 allow the screening equipment to break free from the limitations of fixed installation, thus flexibly adjusting the working position and improving the equipment's flexibility. Once the working area is reached, the mined ore is placed into the crusher 9 for crushing, reducing the load on subsequent screening. The crushed ore then falls onto the first screen plate 813 through the discharge port of the crusher 9. The dual-shaft drive motor 819 is then started. The drive shaft of the dual-shaft drive motor 819 rotates, driving the rotating shaft 84 to rotate. The rotating shaft 84 rotates, causing the first rotating frame 85 to rotate around the axis of the rotating shaft 84. The rotation of the first rotating frame 85 causes one end of the second rotating frame 86 to swing around one end of the first triangular plate 89. The swinging of the second rotating frame 86 causes the other end of the first triangular plate 89 to swing back and forth around the center of the first fixed block 87. The oscillation of the first connecting rod 811 causes it to move up and down repeatedly. The movement of the first connecting rod 811 causes the first screen plate 813 to shake up and down repeatedly under the elastic force of the first buffer spring 815, shaking and screening the ore particles falling on the first screen plate 813. Finer ore particles are shaken out through the first screen hole 814 and fall onto the second screen plate 816. The up and down reciprocating movement of the first connecting rod 811 causes the second triangular plate 810 to swing back and forth around the second fixed block 88. The swinging of the second triangular plate 810 causes the second connecting rod 812 to move back and forth. The reciprocating movement of the second connecting rod 812 causes the second screen plate 816 to shake up and down under the elastic force of the second buffer spring 818, screening even finer ore particles. This allows for more precise screening and recycling of the mined ore according to requirements, improving the utilization rate of the ore and increasing the efficiency of screening.

[0019] For the second embodiment, please refer to... Figures 1-4 Based on the first embodiment, the present invention provides a technical solution: the pushing mechanism 83 includes a slide rail 831, an electric slider 832 is slidably connected to the inner wall of the slide rail 831, a fixed plate 833 is fixedly connected to one side of the electric slider 832, a fixed end of a pneumatic piston rod 834 is fixedly connected to the top of the fixed plate 833, a scraper plate 835 is fixedly connected to the movable end of the pneumatic piston rod 834, two sets of slide rails 831 are provided and symmetrically distributed on one side of the inner wall of the first bracket 81, and two sets of pneumatic piston rods 834 are provided and symmetrically distributed on the top of the fixed plate 833.

[0020] In use, after the ore particles on the first screen plate 813 and the second screen plate 816 have been screened, the electric slider 832 is activated. The electric slider 832 slides in the slide rail 831, driving the fixed plate 833 to move. The movement of the fixed plate 833 drives the pneumatic piston rod 834 to move. When the fixed plate 833 moves to the end of the first screen plate 813 or the second screen plate 816, the pneumatic piston rod 834 is activated. The movable end of the pneumatic piston rod 834 extends and pushes the shovel plate 835 to push the screened ore particles along the surface of the first screen plate 813 or the second screen plate 816 into the first collection box 820 and the second collection box 821 respectively, realizing the automatic collection of ore particles, improving collection efficiency and reducing manual labor intensity.

[0021] Third embodiment, please refer to Figures 1-5 Based on the second embodiment, the present invention provides a technical solution: the dust removal device 10 includes a second support 101, a dust removal water tank 102 is fixedly connected to the top of the second support 101, a dust removal filter plate 103 is fixedly connected to the top of the dust removal water tank 102, a connecting pipe 104 is connected to one side of the dust removal water tank 102, the end of the connecting pipe 104 away from the dust removal water tank 102 is connected to the air outlet of the dust removal fan 105, the water inlet of the dust removal fan 105 is connected to the suction pipe 106, the second support 101 is fixedly connected to the part of the top of the screening box 7 located on both sides of the crusher 9, and the suction pipe 106 is connected to the screening box 7.

[0022] When the crusher 9 or the multi-stage screening device 8 is in operation, a large amount of dust will be generated. Therefore, the dust removal fan 105 is started. The dust removal fan 105 sucks the dust inside the screening box 7 into the suction pipe 106 and transports it through the air outlet of the dust removal fan 105 to the connecting pipe 104. The connecting pipe 104 transports the dust to the dust removal water tank 102. The dust is adsorbed by the water in the dust removal water tank 102, resulting in a relatively pure dust gas. Then, the gas passes through the dust removal filter plate 103 to filter out the remaining dust in the gas, and finally it is discharged into the air. This can avoid the harm of dust to the workers and improve safety and efficiency.

[0023] For the fourth embodiment, please refer to [link / reference]. Figures 1-8Based on the third embodiment, the present invention provides a technical solution: the shock absorption mechanism 5 includes a third bracket 51, a first connecting plate 52 fixedly connected to the bottom of the third bracket 51, a first motor 53 fixedly connected to the bottom of the first connecting plate 52, a drive shaft of the first motor 53 passing through the first connecting plate 52 and fixedly connected to a drive gear 55, a driven gear 56 meshing with the side of the drive gear 55, a first threaded rod 57 passing through and threadedly connected to the bottom of the driven gear 56, a sliding rod 58 rotatably connected to the top of the first threaded rod 57, a sliding sleeve 59 sleeved on and slidably connected to the sliding rod 58, a second connecting plate 510 fixedly connected to the top of the sliding sleeve 59, a shock absorption spring 54 fixedly connected to the top of the second connecting plate 510, the bottom of the sliding sleeve 59 and the second connecting plate 510 located inside the shock absorption spring 54, the third bracket 51 fixedly connected to the bottom of the buffer base 3, the top of the second connecting plate 510 fixedly connected to the bottom of the screening box 7, the top of the driven gear 56 rotatably connected to the bottom of the buffer base 3, and the first threaded rod 57... The buffer mechanism 6 extends through the buffer base 3 into the placement groove 4. The first threaded rod 57 is threadedly connected to the buffer base 3. The buffer mechanism 6 includes a second threaded rod 61. A third connecting plate 62 is sleeved on and threadedly connected to the second threaded rod 61. The sides of the third connecting plate 62 located on both sides of the second threaded rod 61 are slidably connected to limit rods 63. One end of the second threaded rod 61 is fixedly connected to the drive shaft of the second motor 64. The side of the third connecting plate 62 away from the second motor 64 is fixedly connected to a third buffer spring 65. The second threaded rod 61 is located inside the third buffer spring 65. The end of the third buffer spring 65 away from the third connecting plate 62 is fixedly connected to a fourth connecting plate 66. The second threaded rod 61 passes through one side of the buffer base 3 and is fixedly connected to the buffer base 3. The limit rod 63 passes through the buffer base 3 and is fixedly connected to the buffer base 3. The second motor 64 is fixedly connected to one side of the buffer base 3. The third connecting plate 62 is located inside the placement groove 4. The side of the fourth connecting plate 66 away from the third buffer spring 65 is fixedly connected to the screening box 7.

[0024] When the equipment vibrates violently during operation, the first motor 53 is started. The drive shaft of the first motor 53 rotates, driving the drive gear 55 to rotate. The drive gear 55 rotates, driving the driven gear 56 to rotate. The driven gear 56 rotates, driving the first threaded rod 57 to rotate within the buffer base 3. As the first threaded rod 57 rotates, it moves along the buffer base 3 into the placement groove 4. The movement of the first threaded rod 57 drives the sliding rod 58 to move. The movement of the sliding rod 58 causes the sliding sleeve 59 to slide on the sliding rod 58. The sliding sleeve 59 compresses the shock-absorbing spring 54, and the compressed shock-absorbing spring 54 generates elastic force that acts on the screening box. The longitudinal vibration generated by body 7 is damped and buffered. Then, the second motor 64 is started. The drive shaft of the second motor 64 rotates, which drives the second threaded rod 61 to rotate. The rotation of the second threaded rod 61 drives the third connecting plate 62 to move closer to the screening box 7 along the second threaded rod 61 under the limitation of the limit rod 63. The movement of the third connecting plate 62 drives the third buffer spring 65 to extend and retract. The extension and retraction of the third buffer spring 65 generates elastic force to dampen and buffer the lateral vibration generated by the screening box 7. This can reduce the vibration amplitude when the equipment is working, avoid damage to the equipment due to excessive vibration, extend the service life of the equipment, and improve the stability of the equipment.

[0025] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A multi-stage screening device for mining and processing, characterized in that: The system includes a walking support (1), with a walking wheel (2) rotatably connected to the bottom of the walking support (1), a buffer base (3) fixedly connected to the top of the walking support (1), a placement groove (4) opened on the top of the buffer base (3), a shock-absorbing mechanism (5) threaded through and connected to the bottom of the inner wall of the placement groove (4), a buffer mechanism (6) threaded through and connected to one side of the inner wall of the placement groove (4), a screening box (7) fixedly connected to the top of the shock-absorbing mechanism (5), a buffer mechanism (6) fixedly connected to one side inside the placement groove (4) and the screening box (7), a multi-stage screening device (8) fixedly connected to the bottom of the inner wall of the screening box (7), a crusher (9) fixedly connected to the top of the screening box (7), the discharge port of the crusher (9) communicating with the screening box (7), and dust removal devices (10) fixedly connected to the parts of the top of the screening box (7) on both sides of the crusher (9).

2. The multi-stage screening equipment for mining and processing according to claim 1, characterized in that: The multi-stage screening device (8) includes a first support (81), a connecting ring plate (82) fixedly connected to the top of the first support (81), a dual-axis drive motor (819) fixedly connected to one side of the first support (81), a rotating shaft (84) fixedly connected to the drive shaft of the dual-axis drive motor (819), a first rotating frame (85) rotatably connected to the end of the rotating shaft (84) away from the dual-axis drive motor (819), a second rotating frame (86) rotatably connected to the end of the first rotating frame (85) away from the rotating shaft (84), and a first fixing block (86) fixedly connected to the bottom of the connecting ring plate (82). 7) and the second fixed block (88), the first fixed block (87) is rotatably connected to one side of the first triangular plate (89), the second fixed block (88) is rotatably connected to one side of the second triangular plate (810), the bottom of one side of the first triangular plate (89) is rotatably connected to the first connecting rod (811), the bottom of the side of the first triangular plate (89) away from the first connecting rod (811) is rotatably connected to the second rotating frame (86), the top of one side of the first triangular plate (89) is rotatably connected to the second connecting rod (812), the top of the second connecting rod (812) is fixedly connected to the first sieve plate (813), the second connecting rod ( 812) Two sets of symmetrically distributed components are provided at the bottom of the first sieve plate (813). The bottom side of one side of the second triangular plate (810) is rotatably connected to the first connecting rod (811), and the top side of one side of the second triangular plate (810) is rotatably connected to the second connecting rod (812). The bottom of the first sieve plate (813) is provided with a first sieve hole (814). The bottom of the first sieve plate (813) is fixedly connected to a first buffer spring (815). The end of the first buffer spring (815) away from the first sieve plate (813) is fixedly connected to the connecting ring plate (82). The second connecting rod (812) is away from the first triangular plate (89). A second sieve plate (816) is fixedly connected to one side of the first bracket (81). A second sieve hole (817) is opened on the top of the second sieve plate (816). A second buffer spring (818) is fixedly connected to the top of the second sieve plate (816). The end of the second buffer spring (818) away from the second sieve plate (816) is fixedly connected to the bottom of the connecting ring plate (82). A pushing mechanism (83) is fixedly connected to the inner wall of the first bracket (81). A first collection box (820) is fixedly connected to the top of the connecting ring plate (82). A second collection box (821) is fixedly connected to the side of the inner wall of the first bracket (81) away from the pushing mechanism (83).

3. The multi-stage screening equipment for mining and processing according to claim 2, characterized in that: The first bracket (81) is fixedly connected to the bottom of the inner wall of the screening box (7). Multiple sets of the first buffer springs (815) are provided and symmetrically distributed at the bottom of the first screen plate (813). Multiple sets of the second buffer springs (818) are provided and symmetrically distributed at the top of the second screen plate (816). The first collection box (820) is located below the first screen plate (813), and the second collection box (821) is located below the second screen plate (816).

4. The multi-stage screening equipment for mining and processing according to claim 2, characterized in that: The pushing mechanism (83) includes a slide rail (831), an electric slider (832) is slidably connected to the inner wall of the slide rail (831), a fixed plate (833) is fixedly connected to one side of the electric slider (832), a fixed end of a pneumatic piston rod (834) is fixedly connected to the top of the fixed plate (833), and a scraper plate (835) is fixedly connected to the movable end of the pneumatic piston rod (834). The slide rail (831) is provided with two sets and symmetrically distributed on one side of the inner wall of the first bracket (81), and the pneumatic piston rod (834) is provided with two sets and symmetrically distributed on the top of the fixed plate (833).

5. A multi-stage screening device for mining and processing according to claim 1, characterized in that: The dust removal device (10) includes a second bracket (101), a dust removal water tank (102) is fixedly connected to the top of the second bracket (101), a dust removal filter plate (103) is fixedly connected to the top of the dust removal water tank (102), a connecting pipe (104) is connected to one side of the dust removal water tank (102), the end of the connecting pipe (104) away from the dust removal water tank (102) is connected to the air outlet of the dust removal fan (105), and the water inlet of the dust removal fan (105) is connected to the suction pipe (106).

6. A multi-stage screening device for mining and processing according to claim 5, characterized in that: The second bracket (101) is fixedly connected to the part on the top of the screening box (7) located on both sides of the crusher (9), and the dust suction pipe (106) is connected to the screening box (7).

7. A multi-stage screening device for mining and processing according to claim 1, characterized in that: The shock absorption mechanism (5) includes a third bracket (51), a first connecting plate (52) is fixedly connected to the bottom of the third bracket (51), a first motor (53) is fixedly connected to the bottom of the first connecting plate (52), the drive shaft of the first motor (53) passes through the first connecting plate (52) and is fixedly connected to a drive gear (55), a driven gear (56) meshes with the side of the drive gear (55), a first threaded rod (57) passes through and is threadedly connected to the bottom of the driven gear (56), a sliding rod (58) is rotatably connected to the top of the first threaded rod (57), a sliding sleeve (59) is sleeved on the sliding rod (58) and slidably connected to it, a second connecting plate (510) is fixedly connected to the top of the sliding sleeve (59), a shock absorption spring (54) is fixedly connected to the top of the second connecting plate (510), and the bottom of the sliding sleeve (59) and the second connecting plate (510) is located inside the shock absorption spring (54).

8. A multi-stage screening device for mining and processing according to claim 7, characterized in that: The third bracket (51) is fixedly connected to the bottom of the buffer base (3), the top of the second connecting plate (510) is fixedly connected to the bottom of the screening box (7), the top of the driven gear (56) is rotatably connected to the bottom of the buffer base (3), the first threaded rod (57) extends through the buffer base (3) into the placement groove (4), and the first threaded rod (57) is threadedly connected to the buffer base (3).

9. A multi-stage screening device for mining and processing according to claim 1, characterized in that: The buffer mechanism (6) includes a second threaded rod (61), on which a third connecting plate (62) is sleeved and threadedly connected. Limiting rods (63) are slidably connected to the sides of the third connecting plate (62) located on both sides of the second threaded rod (61). The drive shaft of a second motor (64) is fixedly connected to one end of the second threaded rod (61). A third buffer spring (65) is fixedly connected to the side of the third connecting plate (62) away from the second motor (64). The second threaded rod (61) is located inside the third buffer spring (65). The third buffer spring (65) is fixedly connected to the fourth connecting plate (66) at the end away from the third connecting plate (62). The second threaded rod (61) passes through one side of the buffer base (3) and is fixedly connected to the buffer base (3). The limiting rod (63) passes through the buffer base (3) and is fixedly connected to the buffer base (3). The second motor (64) is fixedly connected to one side of the buffer base (3). The third connecting plate (62) is located inside the placement groove (4). The side of the fourth connecting plate (66) away from the third buffer spring (65) is fixedly connected to the screening box (7).

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