A vibrating rotary underflow material screening device

Abstract

The utility model relates to mining engineering screening equipment technical field, concretely to a kind of waste rock material screening device of vibration rotary discharging, including electro-hydraulic control device, discharging vibrating device, discharging device, lifting unloading device and rotary screening device;Rotary blade is arranged in rotary screening bucket inside, bearing pivot is embedded in rotary screening bucket outside, and bearing pivot is respectively clamped in upper pivot clamping slot and lower pivot clamping slot inside.Optimize discharging mode in the waste rock material screening device of vibration rotary discharging, completely solve material accumulation problem, improve screening efficiency and screen life: vibrating screening net embedded in discharging device and discharging vibrating device form cooperation-reciprocal movement of hydraulic inner column in hydraulic outer cylinder, drive discharging iron tank synchronous vibration, so that material is first completed preliminary screening before entering rotary screening bucket, separate part fine-grained material in advance, avoid large-particle material and fine-grained material mixed accumulation, reduce load for subsequent rotary screening link.

Description

Technical Field

[0001] This utility model relates to the field of screening equipment technology in mining engineering, and more specifically, to a waste rock material screening device with vibrating and rotating feeding. Background Technology

[0002] In the field of mining engineering, large amounts of waste rock materials are continuously generated during mining, tunneling, and ore processing. These waste rock materials not only contain unusable gangue but also mixed with usable aggregates of different particle sizes. If they can be efficiently screened and graded, on the one hand, aggregates that meet the particle size requirements can be recycled for underground backfilling, roadbed paving, and other applications, achieving resource recycling; on the other hand, it can reduce the amount of waste rock transported, lower transportation costs and environmental disposal pressure, and meet the environmental protection requirements of green mining. Therefore, the screening and treatment of waste rock materials has become a key link in the mining production process.

[0003] Currently, the mainstream waste rock screening equipment in the industry mainly includes vibrating screens, drum screens, and fixed grid screens. Among them, vibrating screens rely on high-frequency vibration of the screen body to achieve material separation and are suitable for screening medium and fine-grained materials; drum screens use the rotation of the screen cylinder to drive the material to tumble and pass through the screen, and have a certain adaptability to sticky materials. However, in practical applications, these devices generally suffer from unreasonable design of the feeding process, which has become the core bottleneck restricting screening efficiency and stability. Specifically, the feeding mechanism of existing equipment mostly adopts a fixed chute or a simple inclined guide plate structure. When the material enters the screen body from the silo or conveying equipment, it relies entirely on gravity to slide freely. This static feeding method easily leads to the following problems: First, the material accumulates rapidly at the screen inlet, forming a local "pile," which compresses the effective screening area of ​​the screen. Some areas of the screen bear excessive load for a long time, aggravating local wear. At the same time, the material that is not fully expanded cannot make full contact with the screen, and fine particles are obstructed from passing through the screen, resulting in a significant decrease in screening efficiency, usually 20%-35% lower than the design value. Second, the accumulated material is prone to agglomeration due to compression and friction. Especially for waste rock with high moisture content (greater than 8%) or high mud content, the agglomerated material will block the screen holes, further reducing the screening capacity. Frequent shutdowns for cleaning are required, which shortens the effective operating time of the equipment and increases maintenance costs. Third, uneven material distribution will cause the screen body to be unbalanced in terms of force. Long-term operation can easily lead to abnormal equipment vibration, loose parts and other malfunctions, shortening the overall service life of the equipment and increasing the equipment investment and maintenance costs of mining production. To address these issues, some equipment manufacturers have attempted to optimize the feeding mechanism, such as replacing fixed chutes with oscillating feeders or adding guide plates within the chutes. However, oscillating feeders require additional drive motors and transmission mechanisms, increasing both the complexity of the equipment structure and manufacturing costs. They also suffer from low adjustment accuracy and susceptibility to material jamming. Furthermore, guide plates are typically designed with a fixed angle, providing only limited guidance for materials of specific particle sizes and flowability. They are insufficient for achieving uniform material distribution for waste rock materials with large particle size fluctuations (e.g., 5-100mm) or varying viscosity, resulting in poor adaptability. In addition, existing equipment suffers from insufficient operational flexibility in scenarios such as temporary screening in underground mines and mobile operations in open-pit mines. On the one hand, the adjustment of screening parameters (such as vibration frequency and rotation speed) depends on manual operation on site, making it difficult to adjust them accurately in real time according to the characteristics of the material. On the other hand, the unloading process often relies on manual assistance or fixed-angle unloading, which makes it difficult and inefficient to clean up large-diameter waste stones left after screening, further affecting the continuity of operations. Utility Model Content

[0004] The purpose of this invention is to provide a waste rock material screening device with vibrating and rotating feeding, in order to solve the problems mentioned in the background art, such as the rapid accumulation of material at the inlet of the screen surface, forming a local "material pile", which compresses the effective screening area of ​​the screen, causes the screen to bear excessive load in some areas for a long time, aggravates local wear, and at the same time, the material that is not fully expanded has difficulty making full contact with the screen, the fine material is obstructed from passing through the screen, and the screening efficiency is significantly reduced.

[0005] To achieve the above objectives, this utility model provides a waste rock material screening device with vibrating and rotating feeding, including an electro-hydraulic control device, a feeding vibration device, a feeding device, a lifting and unloading device, and a rotating screening device. The rotary screening device includes a rotary screening drum, rotating blades, bearing shafts, upper shaft slots, lower shaft slots, a front drum support, a rear drum support, connecting bolts, a motor support bracket, a rotary motor, a motor shaft washer, a motor shaft, a small transmission gear, a large transmission gear, a drum fixing plate, a gear baffle, a front baffle, a bottom baffle, a rear baffle, and a lower discharge port. The rotating blades are disposed inside the rotary screening drum, and the bearing shafts are embedded outside the rotary screening drum, with the bearing shafts respectively secured in the upper and lower shaft slots. Both the front and rear drum supports are connected to the bottom support frame. The frame is connected, and the front and rear rotating drum supports are fixed to the relevant structures of the rotating screening drum by connecting bolts; the motor support bracket is set on the bottom support frame, and the rotating motor is fixed on the motor support bracket; the motor shaft washer, motor shaft and small transmission gear are set sequentially at the output end of the rotating motor, the small transmission gear meshes with the large transmission gear, and the large transmission gear is sleeved on the outside of the rotating screening drum; the rotating drum fixing plate and gear baffle are set on the outside of the large transmission gear; the front baffle, bottom baffle and rear baffle are all set at the lower part of the bottom support frame, and the lower discharge port is opened in the middle of the bottom baffle.

[0006] The core of this setup lies in achieving fine screening of materials through a rotary screening device. When the rotary motor operates, power is transmitted via the motor shaft to the small transmission gear. The small transmission gear meshes with the large transmission gear, driving the rotary screening drum to rotate around the bearing shaft (secured by upper and lower shaft slots to ensure rotational stability). After the material enters the rotary screening drum, it tumbles under the agitation of the internal rotating blades. Material meeting the particle size requirements falls through the gaps in the screen drum to the bottom and is collected through the lower discharge port. Simultaneously, the front and rear rotary drum supports are fixed to the bottom support frame with connecting bolts, ensuring structural stability. A drum fixing plate and gear baffle prevent the large transmission gear from derailing, while front, bottom, and rear baffles prevent material spillage.

[0007] Preferably, the electro-hydraulic control device includes a main control box, a main control box screen, a main control box console, a main control box cabinet, a secondary control box, a secondary control box screen, operating knobs, a secondary control box fixing component, hydraulic oil transmission pipes, and power control conduits. The main control box screen and main control box console are mounted on the main control box, and the main control box is connected to the main control box cabinet. The main control box transmits electrical signals through the power control conduits and transmits hydraulic oil through the hydraulic oil transmission pipes, and both the power control conduits and the hydraulic oil transmission pipes are connected to the secondary control box. The secondary control box screen and operating knobs are mounted on the secondary control box, and the secondary control box is fixedly connected to the bottom support frame through the secondary control box fixing component.

[0008] This device is equipped with an electro-hydraulic control unit as the "control center" of the equipment. The main control box receives the parameters set by the user through the main control box console. After being processed by the control module in the main control box cabinet, the electrical signal is transmitted to the auxiliary control box through the power control line and the hydraulic oil is transmitted through the hydraulic oil transmission pipe. The auxiliary control box displays the operation steps on the auxiliary control box screen. The operator can fine-tune the equipment status through the operation knob. At the same time, the auxiliary control box fixing parts fix the auxiliary control box to the bottom support frame to ensure the stability of the operating structure.

[0009] Preferably, the feeding vibration device includes a hydraulic outer cylinder and a hydraulic inner column, wherein the hydraulic inner column can reciprocate within the hydraulic outer cylinder.

[0010] This feeding vibration device is hydraulically driven. The hydraulic oil supplied by the electro-hydraulic control device enters the hydraulic outer cylinder, which pushes the hydraulic inner column to reciprocate within the cylinder. The vibration generated by the reciprocating motion is transmitted through the hydraulic outer cylinder to the connected feeding device, providing vibration power for the feeding process and achieving preliminary screening and uniform distribution of materials.

[0011] Preferably, the feeding device includes a feeding trough, a vibrating screen, a connecting rod, a connecting block, a feeding chute, and a rubber folding sleeve; the vibrating screen is embedded in the feeding trough, the feeding trough is connected to the connecting block through the connecting rod, and the connecting block is connected to the hydraulic outer cylinder; one end of the feeding chute is connected to the feeding trough, and the other end is connected to the rubber folding sleeve.

[0012] This device receives materials and performs preliminary screening. After the materials are poured into the feeding trough, the vibration transmitted by the feeding vibration device causes the materials to move on the vibrating screen. Fine particles fall through the screen into the feeding chute. At the same time, the connecting rod fixes the feeding trough to the connecting block, which is connected to the hydraulic outer cylinder to ensure effective vibration transmission. The feeding chute guides the materials to the rubber folding sleeve, which is adapted to the feed inlet of the rotary screening barrel to achieve flexible material transfer.

[0013] Preferably, the rubber folding sleeve of the feeding device is connected to the inlet of the rotary screening barrel of the rotary screening device, and the outlet of the rotary screening barrel is used to discharge materials larger than the screening particle size.

[0014] This setup enables material connection between the feeding device and the rotary screening device. The material that has undergone preliminary screening in the feeding device is precisely introduced into the inlet of the rotary screening barrel through the rubber folding sleeve, ensuring that the material enters the rotary screening stage without loss. After the rotary screening is completed, large particles that do not meet the particle size requirements are discharged from the rear outlet under the rotational force of the rotary screening barrel, achieving graded treatment of "collection of qualified materials + discharge of unqualified materials".

[0015] Preferably, the lifting and unloading device includes a lower lifting hydraulic cylinder fixing component, a lower lifting hydraulic inner column, a lower lifting hydraulic outer cylinder, a lower lifting hydraulic cylinder connecting shaft, a transport tire, a tire connecting shaft, and a transport tire connecting component. The lower lifting hydraulic cylinder fixing component is located at the front of the bottom support frame. The lower lifting hydraulic outer cylinder is connected to the bottom support frame through the lower lifting hydraulic cylinder fixing component. The lower lifting hydraulic inner column is sleeved inside the lower lifting hydraulic outer cylinder and is connected to the transport tire through the lower lifting hydraulic cylinder connecting shaft. The tire connecting shaft passes through the transport tire, and the transport tire connecting component is located at the rear of the bottom support frame and is connected to the transport tire.

[0016] This lifting and unloading device uses hydraulic drive to adjust the tilt angle and move the equipment. After screening, the electro-hydraulic control device controls the hydraulic oil to enter the lower lifting hydraulic cylinder, pushing the lower lifting hydraulic inner column to extend and lift the front of the bottom support frame, so that the rotating screening barrel forms an inclined angle. Large-diameter materials are discharged from the rear discharge port under the action of gravity and rotational force. At the same time, the transport tires are connected to the bottom support frame through tire connecting shafts and transport tire connecting parts, which facilitates the overall movement of the equipment.

[0017] Preferably, the rotating blades are provided with three blades, and the three rotating blades are evenly distributed inside the rotating screening barrel; the rotating barrel fixing plate and the bottom support frame are fixedly connected by welding; the motor shaft gasket is made of elastic material to alleviate the vibration generated when the motor shaft is running; the inner sides of the front baffle, bottom baffle and rear baffle are all provided with wear-resistant liners.

[0018] This design features three evenly distributed rotating blades to ensure that the material is subjected to balanced force and tumbles more thoroughly within the rotary screening drum; the drum fixing plate is welded to the bottom support frame to enhance structural stability; the elastic motor shaft gasket absorbs motor vibration and reduces vibration transmission; and the wear-resistant liners on the inner sides of the front baffle, bottom baffle, and rear baffle reduce wear caused by material impact.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: In this vibrating rotary feeding waste rock material screening device, the feeding mode is optimized, completely solving the problem of material accumulation and improving screening efficiency and screen life: Dual screening pretreatment reduces the load on subsequent screening: The vibrating screen embedded in the feeding device works in synergy with the feeding vibration device—the reciprocating motion of the hydraulic inner column in the hydraulic outer cylinder drives the feeding trough to vibrate synchronously, so that the material is pre-screened before entering the rotary screening barrel, separating some fine particles in advance, avoiding the mixing and accumulation of large-diameter materials with fine particles, and reducing the load on the subsequent rotary screening stage; at the same time, the vibration can break up the clumps of waste rock with high moisture content or high mud content, reducing the risk of clogging of the subsequent screens by clumps of material. Flexible conveying and precise material distribution prevent local accumulation: The rubber folding sleeve at the end of the feeding chute is elastic and adaptable, allowing it to tightly connect with the feed inlet of the rotary screening drum. This prevents material spillage during transport and accommodates positional deviations caused by equipment vibration or slight displacement. Combined with the uniform material distribution effect of the vibrating screen, the material is evenly distributed along the drum wall when it enters the rotary screening drum, completely solving the "local material accumulation" problem caused by traditional fixed chutes. This significantly improves the effective screening area utilization rate of the rotary screening drum and significantly improves the problem of screening efficiency loss in existing equipment. Reduce screen wear and extend the life of vulnerable parts: Due to the uniform distribution of materials, the rotary screening drum and vibrating screen avoid local overload, which greatly reduces the local wear rate of the screen. Combined with the wear-resistant lining plates on the front baffle, bottom baffle and rear baffle, the replacement cycle of vulnerable parts of the equipment is significantly extended, the number of downtime maintenance is reduced, and the effective operating time of the equipment is increased. Enhance the performance of rotary screens to achieve efficient classification and stable operation: Multi-structure synergy enhances screening uniformity: Three evenly distributed rotating blades inside the rotary screening drum continuously tumble and stir the material as the drum rotates, ensuring full contact between the material and the screen mesh and preventing fine particles from being trapped by large particles that cannot pass through the screen. At the same time, the precise fit between the bearing shaft and the upper and lower shaft slots ensures the stability of the rotary screening drum's operation, avoiding screening deviations caused by drum shaking, significantly improving the qualified particle size distribution rate, and surpassing the screening accuracy level of existing equipment. The transmission mechanism is stable and reliable, reducing the risk of failure: The rotary motor transmits power through the meshing of a small transmission gear and a large transmission gear, and with the anti-derailment protection of the gear baffle, it ensures high transmission efficiency and avoids the problems of slippage and breakage of traditional belt drives; the motor shaft gasket is made of elastic material, which can effectively absorb the vibration energy during motor operation, reduce the impact of vibration on the transmission mechanism and the bottom support frame, and reduce the overall failure rate of the equipment, which is especially suitable for complex vibration environments such as underground mines and open-pit mines. Intelligent electro-hydraulic control enhances operational flexibility and adaptability: The dual control boxes work together to achieve precise parameter control: the main control box can preset the vibration screening time, frequency, and rotary screening time and speed, and the operating data is displayed in real time on the main control box screen. Operators do not need to manually adjust on-site. The parameters can be optimized according to changes in material particle size and moisture content, and the screening needs of waste rock with different characteristics can be quickly responded to. The auxiliary control box can independently control the lifting and unloading device through the operation knob to meet the temporary operation needs on site. The dual operation mode is suitable for various scenarios of fixed and mobile operations in the mine. Electro-hydraulic coordinated transmission ensures operational stability: The independent design of the power control conduit and the hydraulic oil transmission conduit avoids mutual interference between electrical signals and hydraulic oil transmission, ensures the timeliness of electrical signal transmission and the stability of hydraulic oil pressure, ensures the precise and synchronized operation of the material feeding vibration device and the lifting and unloading device, and ensures the coordinated operation of all parts of the equipment. The lifting and unloading system is efficient and convenient, reducing labor costs and workload. Automatic lifting and unloading solves the problem of cleaning large-diameter materials: After screening, the lower lifting hydraulic inner column is extended under the control of the auxiliary control box, which can raise the front of the bottom support frame, so that the rotating screening barrel forms a reasonable tilt angle. Combined with the continuous rotation of the barrel, the large-diameter waste stones remaining inside can be quickly discharged from the rear discharge port, which greatly shortens the unloading time, significantly saves the time required for traditional manual cleaning, reduces the labor intensity of operators, and avoids internal damage to the equipment caused by manual cleaning. Easy to move and adaptable to multiple operating scenarios: The bottom support frame forms a moving mechanism through the transport tires, tire connecting shafts, and transport tire connecting parts. The entire equipment can be moved by traction or manual pushing. It has a small turning radius and is especially suitable for narrow spaces such as underground mine roadways and temporary screening points in open-pit mines. No fixed installation is required, which greatly shortens the equipment deployment time and is superior to the installation efficiency of traditional fixed screening equipment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the electro-hydraulic control device of this utility model; Figure 3 This utility model relates to a feeding and feeding vibration device; Figure 4 This is a front view of the rotary screening device of this utility model; Figure 5 This is a front view of the rotary screening device of this utility model; Figure 6 This is a rear view of the rotary screening device of this utility model; Figure 7 This is a rear view of the rotary screening device of this utility model; Figure 8 This is a cross-sectional view of the rotary screening device of this utility model; The meanings of the labels in the diagram are as follows: 1. Main control box; 2. Main control box screen; 3. Main control box control panel; 4. Main control box cabinet; 5. Secondary control box screen; 6. Secondary control box; 7. Control knob; 8. Secondary control box fixing parts; 9. Hydraulic oil transmission pipe; 10. Power control conduit; 11. Vibrating screen; 12. Discharge trough; 13. Connecting rod; 14. Connecting block; 15. Discharge chute; 16. Rubber folding sleeve; 17. Hydraulic outer cylinder; 18. Hydraulic inner column; 19. Rotary screening drum; 20. Front rotating drum support; 21. Inlet feed port; 22. Outlet discharge port; 23. Bottom support frame; 24. Transport tire; 25. Tire connecting shaft; 6. Rear rotating drum support; 27. Large transmission gear; 28. Rear discharge port; 29. ​​Rotary motor; 30. Motor support bracket; 31. Front side baffle; 32. Connecting bolts; 33. Lower lifting hydraulic cylinder fixing component; 34. Lower lifting hydraulic inner column; 35. Lower lifting hydraulic outer cylinder; 36. Lower lifting hydraulic cylinder connecting shaft; 37. Bottom baffle; 38. Rotating blade; 39. Transport tire connecting component; 40. Gear baffle; 41. Rear side baffle; 42. Rotating drum fixing plate; 43. Small transmission gear; 44. Motor shaft washer; 45. Motor shaft; 46. Bearing shaft; 47. Lower shaft slot; 48. Upper shaft slot. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] This utility model provides a waste rock material screening device with vibrating rotary feeding, such as Figures 1-8 As shown, it includes an electro-hydraulic control device, a feeding vibration device, a feeding device, a lifting and unloading device, and a rotary screening device. The rotary screening device includes a rotary screening barrel 19, rotating blades 38, bearing shafts 46, upper shaft slots 48, lower shaft slots 47, a front drum support 20, a rear drum support 26, connecting bolts 32, a motor support bracket 30, a rotary motor 29, a motor shaft gasket 44, a motor shaft 45, a small transmission gear 43, a large transmission gear 27, a drum fixing plate 42, a gear baffle 40, a front baffle 31, a bottom baffle 37, a rear baffle 41, and a lower discharge port 22. The rotating blades 38 are located inside the rotary screening barrel 19, and the bearing shafts 46 are embedded outside the rotary screening barrel 19, respectively secured in the upper shaft slots 48 and the lower shaft slots 47. Both the front drum support 20 and the rear drum support 26 are connected to the bottom... The bottom support frame 23 is connected, and the front rotating drum support 20 and the rear rotating drum support 26 are fixed to the relevant structures of the rotating screening drum 19 by connecting bolts 32; the motor support bracket 30 is set on the bottom support frame 23, and the rotating motor 29 is fixed on the motor support bracket 30; the motor shaft washer 44, the motor shaft 45 and the small transmission gear 43 are sequentially set at the output end of the rotating motor 29, the small transmission gear 43 meshes with the large transmission gear 27, and the large transmission gear 27 is sleeved on the outside of the rotating screening drum 19; the rotating drum fixing plate 42 and the gear baffle 40 are set on the outside of the large transmission gear 27; the front baffle 31, the bottom baffle 37 and the rear baffle 41 are all set at the lower part of the bottom support frame 23, and the lower discharge port 22 is opened in the middle of the bottom baffle 37.

[0023] The overall framework of the device is constructed, with the core being the fine screening of materials through a rotary screening device. When the rotary motor 29 operates, power is transmitted to the small transmission gear 43 via the motor shaft 45. The small transmission gear 43 meshes with the large transmission gear 27, driving the rotary screening barrel 19 to rotate around the bearing shaft 46. After the material enters the rotary screening barrel 19, it tumbles under the agitation of the internal rotating blades 38. Material that meets the particle size requirements falls through the gaps in the screen barrel to the bottom and is collected through the lower discharge port 22. At the same time, the front rotating barrel support 20 and the rear rotating barrel support 26 are fixed to the rotary screening barrel 19 and the bottom support frame 23 by connecting bolts 32 to ensure structural stability. The rotating barrel fixing plate 42 and the gear baffle 40 prevent the large transmission gear 27 from derailing, while the front baffle 31, the bottom baffle 37, and the rear baffle 41 prevent material spillage. The rotary screening drum 19 and the rotating blades 38 work together to ensure thorough material tumbling, preventing fine particles from being encapsulated by larger particles, improving screening uniformity, and solving the problem of incomplete screening caused by insufficient material contact in traditional screening equipment. The gear meshing transmission structure offers high transmission efficiency, and the anti-derailment design of the gear baffle 40 reduces transmission failures, ensuring continuous and stable equipment operation and lowering the probability of downtime due to transmission failure. The multi-support and bolt-fixed structure ensures the rotary screening drum 19 is securely installed, with no significant shaking during operation, improving screening accuracy and preventing particle size deviations caused by equipment vibration.

[0024] In this embodiment, the electro-hydraulic control device includes a main control box 1, a main control box screen 2, a main control box console 3, a main control box cabinet 4, a secondary control box 6, a secondary control box screen 5, an operating knob 7, a secondary control box fixing component 8, a hydraulic oil transmission pipe 9, and a power control conduit 10. The main control box screen 2 and the main control box console 3 are mounted on the main control box 1, and the main control box 1 is connected to the main control box cabinet 4. The main control box 1 transmits electrical signals through the power control conduit 10 and transmits hydraulic oil through the hydraulic oil transmission pipe 9, and both the power control conduit 10 and the hydraulic oil transmission pipe 9 are connected to the secondary control box 6. The secondary control box screen 5 and the operating knob 7 are mounted on the secondary control box 6, and the secondary control box 6 is fixedly connected to the bottom support frame 23 through the secondary control box fixing component 8.

[0025] The electro-hydraulic control device serves as the "control center" of the equipment. The main control box 1 receives user-set parameters such as screening time and rotation speed through the main control box control panel 3. After processing by the control module in the main control box cabinet 4, the electrical signal is transmitted to the auxiliary control box 6 through the power control line 10 and the hydraulic oil is transmitted to the auxiliary control box 6 through the hydraulic oil transmission pipe 9. The auxiliary control box 6 displays the operation steps through the auxiliary control box screen 5. The operator can fine-tune the equipment status through the operation knob 7. At the same time, the auxiliary control box fixing component 8 fixes the auxiliary control box 6 to the bottom support frame 23 to ensure the stability of the operating structure. The dual control box design enables "centralized setting + on-site fine-tuning," allowing operators to remotely preset parameters and make real-time adjustments near the equipment, enhancing operational flexibility and adapting to different mining operation scenarios. Independent transmission of electrical signals and hydraulic oil prevents signal interference, ensuring accurate transmission of control commands and synchronized operation of all equipment components, thus improving operational stability. The secondary control box screen 5 displays operating steps, reducing operator learning costs and minimizing equipment malfunctions caused by operational errors. Simultaneously, the fixed secondary control box 6 prevents equipment displacement during operation, ensuring operational safety.

[0026] Specifically, the material feeding vibration device includes a hydraulic outer cylinder 17 and a hydraulic inner column 18, and the hydraulic inner column 18 can reciprocate within the hydraulic outer cylinder 17.

[0027] The feeding vibration device is hydraulically driven as its core. The hydraulic oil delivered by the electro-hydraulic control device enters the hydraulic outer cylinder 17, which drives the hydraulic inner column 18 to reciprocate within the cylinder. The vibration generated by the reciprocating motion is transmitted to the connected feeding device through the hydraulic outer cylinder 17, providing vibration power for the feeding process and realizing the preliminary screening and uniform distribution of materials. The hydraulically driven reciprocating vibration provides stable power, and the vibration frequency can be adjusted via an electro-hydraulic control device to adapt to the loosening requirements of different particle sizes, such as fine-grained mudstone and coarse-grained sandstone waste rock, thus preventing material agglomeration. The vibration acts directly on the feeding device, breaking up the material in advance, reducing the screening load on the subsequent rotating screening drum 19, improving overall screening efficiency, and avoiding material accumulation caused by static feeding. Compared to traditional electric motors, hydraulic structures have lower vibration, lower noise, and less wear, extending the service life of the device, reducing noise pollution in the mining environment, and reducing the frequency of equipment maintenance.

[0028] Furthermore, the feeding device includes a feeding trough 12, a vibrating screen 11, a connecting rod 13, a connecting block 14, a feeding chute 15, and a rubber folding sleeve 16; the vibrating screen 11 is embedded in the feeding trough 12, the feeding trough 12 is connected to the connecting block 14 through the connecting rod 13, and the connecting block 14 is connected to the hydraulic outer cylinder 17; one end of the feeding chute 15 is connected to the feeding trough 12, and the other end is connected to the rubber folding sleeve 16.

[0029] The feeding device receives the material and completes the initial screening. After the material is poured into the feeding trough 12, the vibration transmitted by the feeding vibration device causes the material to move on the vibrating screen 11. Fine particles fall through the screen into the feeding chute 15. At the same time, the connecting rod 13 fixes the feeding trough 12 to the connecting block 14. The connecting block 14 is connected to the hydraulic outer cylinder 17 to ensure effective vibration transmission. The feeding chute 15 guides the material to the rubber folding sleeve 16. The rubber folding sleeve 16 is adapted to the feed inlet position of the rotary screening barrel 19 to realize flexible material transmission. The vibrating screen 11 pre-screens fine particles, reducing the amount of material entering the rotary screen 19, preventing overload of the rotary screen 19, improving screening efficiency, and reducing screen wear. The fixed structure of the connecting rod 13 and connecting block 14 ensures lossless transmission of vibration to the feed trough 12, resulting in even material distribution on the screen, preventing screen breakage due to localized overload, and extending the screen replacement cycle. The flexible design of the rubber folding sleeve 16 adapts to positional deviations caused by equipment vibration or slight displacement, preventing material spillage during transport, reducing material waste, and protecting the feed inlet of the rotary screen 19 from damage caused by rigid collisions.

[0030] Furthermore, the rubber folding sleeve 16 of the feeding device is connected to the inlet 21 of the rotary screening barrel 19 of the rotary screening device, and the outlet 28 of the rotary screening barrel 19 is used to discharge materials larger than the screening particle size.

[0031] The material feeding device and the rotary screening device are connected. The material that has been pre-screened in the feeding device is accurately introduced into the inlet 21 of the rotary screening barrel 19 through the rubber folding sleeve 16, ensuring that the material enters the rotary screening stage without loss. After the rotary screening is completed, large particles that do not meet the particle size requirements are discharged from the rear outlet 28 under the action of the rotation force of the rotary screening barrel 19, realizing the graded treatment of "collection of qualified materials + discharge of unqualified materials". The precise connection between the rubber folding sleeve 16 and the inlet feed port 21 prevents spillage during material transport, improves material utilization, reduces on-site cleanup, and lowers the labor intensity of operators. The rear outlet 28 specifically discharges large-diameter materials, creating a separation with the qualified material collection at the lower outlet 22, preventing material mixing, ensuring the purity of the screened product, and meeting the diverse needs of mines for materials of different particle sizes. Smooth material flow without transmission jams ensures continuous equipment operation, reduces downtime due to material blockage, and increases the effective operating time of the equipment.

[0032] Furthermore, the lifting and unloading device includes a lower lifting hydraulic cylinder fixing component 33, a lower lifting hydraulic inner column 34, a lower lifting hydraulic outer cylinder 35, a lower lifting hydraulic cylinder connecting shaft 36, a transport tire 24, a tire connecting shaft 25, and a transport tire connecting component 39. The lower lifting hydraulic cylinder fixing component 33 is located at the front of the bottom support frame 23. The lower lifting hydraulic outer cylinder 35 is connected to the bottom support frame 23 through the lower lifting hydraulic cylinder fixing component 33. The lower lifting hydraulic inner column 34 is sleeved inside the lower lifting hydraulic outer cylinder 35 and is connected to the transport tire 24 through the lower lifting hydraulic cylinder connecting shaft 36. The tire connecting shaft 25 passes through the transport tire 24, and the transport tire connecting component 39 is located at the rear of the bottom support frame 23 and is connected to the transport tire 24.

[0033] The lifting and unloading device is hydraulically driven to adjust the tilt angle and move the equipment. After screening, the electro-hydraulic control device controls the hydraulic oil to enter the lower lifting hydraulic outer cylinder 35, pushing the lower lifting hydraulic inner column 34 to extend and lift the front of the bottom support frame 23, so that the rotating screening barrel 19 forms an inclined angle. Large-diameter materials are discharged from the rear discharge port 28 under the action of gravity and rotation. At the same time, the transport tire 24 is connected to the bottom support frame 23 through the tire connecting shaft 25 and the transport tire connecting piece 39, which facilitates the overall movement of the equipment. The hydraulically driven lifting structure allows for precise adjustment of the equipment's tilt angle, ensuring complete discharge of large-diameter materials and preventing contamination during subsequent screening due to residual material, thus improving screening accuracy. The transport tires 24 design enable flexible movement of the equipment, adapting to various operating scenarios such as underground mine tunnels and temporary screening points in open-pit mines. No fixed installation is required, reducing equipment deployment costs and enhancing operational flexibility. The tire connecting shaft 25 prevents the transport tires 24 from detaching, ensuring safety during equipment movement. Simultaneously, the lower lifting hydraulic cylinder fixing component 33 secures the lifting structure, preventing equipment displacement during lifting and ensuring safe unloading.

[0034] Furthermore, the rotating blade 38 has three blades, and the three rotating blades 38 are evenly distributed inside the rotating screening barrel 19; the rotating barrel fixing plate 42 is fixedly connected to the bottom support frame 23 by welding; the motor shaft gasket 44 is made of elastic material to alleviate the vibration generated when the motor shaft 45 is running; the inner sides of the front baffle 31, the bottom baffle 37 and the rear baffle 41 are all provided with wear-resistant liners.

[0035] Three evenly distributed rotating blades 38 ensure that the material is subjected to balanced force and more thorough tumbling within the rotating screening drum 19; the rotating drum fixing plate 42 is fixed to the bottom support frame 23 by welding, enhancing structural stability; the motor shaft gasket 44 made of elastic material absorbs the vibration of the motor operation and reduces vibration transmission; the wear-resistant liners on the inner sides of the front baffle 31, bottom baffle 37, and rear baffle 41 reduce wear caused by material impact. Three evenly distributed rotating blades 38 prevent material from accumulating locally inside the drum, improving screening uniformity and reducing breakage caused by uneven stress on the blades, thus extending their service life. The welded and fixed rotating drum fixing plate 42 provides high connection strength and can withstand the long-term rotational load of the rotating screening drum 19, preventing equipment shaking caused by loose supports and improving overall equipment stability. The flexible motor shaft gasket 44 reduces vibration transmission, lowers equipment noise, protects transmission components, reduces wear caused by vibration, and lowers maintenance costs; the wear-resistant liner extends the service life of the baffle, reduces material spillage caused by baffle damage, and lowers the frequency of equipment maintenance.

[0036] When using the vibrating rotary feeding waste rock material screening device of this utility model, the operator first checks the equipment status through the main control box screen 2 of the main control box 1. After confirming that everything is correct, the operator sets the screening parameters on the main control box control panel 3: including the vibration frequency and vibration time of the feeding vibration device, and the rotation speed and screening time of the rotary screening device. After the parameters are set, the control module in the main control box cabinet 4 sends the instructions to the auxiliary control box 6 through the power control line 10 and the hydraulic oil transmission pipe 9. The auxiliary control box screen 5 displays the preset parameters and operating steps. The operator makes fine adjustments through the operating knob 7 of the auxiliary control box 6 to ensure that the parameters are adapted to the particle size and moisture characteristics of the waste rock to be screened. For example, a higher vibration frequency needs to be set for fine-grained mudstone, and a longer rotary screening time needs to be set for coarse-grained sandstone. The waste rock material to be screened is transported to the side of the feeding device. According to the needs of the work site, the equipment is moved to the designated position by the transport tire connector 39 and transport tire 24 at the rear of the bottom support frame 23. The tire connecting shaft 25 ensures that the transport tire 24 is stable and does not fall off, thus preventing the equipment from shifting during operation. The operator starts the equipment, and the electro-hydraulic control device drives hydraulic oil into the hydraulic outer cylinder 17. The hydraulic inner column 18 begins to reciprocate within the hydraulic outer cylinder 17, and the resulting vibration is transmitted to the discharge trough 12 through the connecting block 14 and the connecting rod 13. At this time, the waste stone material to be screened is slowly poured into the discharge trough 12. The material is dispersed by vibration on the vibrating screen 11: fine particles smaller than the mesh size of the vibrating screen 11 pass through the screen and fall into the discharge chute 15 below. Then, through the flexible transmission of the rubber folding sleeve 16, the rubber folding sleeve 16 can adapt to the slight displacement caused by the equipment vibration, avoid material spillage, and accurately guide the material into the feed inlet 21 of the rotary screening barrel 19. Coarse particles larger than the mesh size of the vibrating screen 11 are temporarily retained in the discharge trough 12 for subsequent processing. If too much material is retained, feeding can be paused, and the accumulated material can be dispersed by increasing the vibration frequency. Material entering the rotary screening drum 19 is driven by a rotary motor 29, which is fixed to a motor support bracket 30. Power is transmitted through the motor shaft 45 and the motor shaft washer 44 to the small transmission gear 43. The motor shaft washer 44 absorbs vibration and protects the transmission components. The small transmission gear 43 meshes with the large transmission gear 27, causing the rotary screening drum 19 to rotate around the bearing shaft 46. The bearing shaft 46 is locked in the upper shaft slot 48 and the lower shaft slot 47 to ensure rotational concentricity. Three evenly distributed rotating blades 38 inside the drum cause the material to continuously tumble, ensuring full contact between the material and the screen wall of the rotary screening drum 19. The particle size meets the requirements. Material smaller than the width of the screen opening in the rotary screening barrel 19 passes through the gaps in the screen wall and falls onto the bottom baffle 37 at the bottom support frame 23. It then falls into the collection device through the lower discharge port 22 in the middle of the bottom baffle 37. The front baffle 31 and the rear baffle 41 prevent material from spilling from both sides, and the wear-resistant lining plates on their inner sides reduce wear caused by material impact. At the same time, the rotating barrel fixing plate 42 and the gear baffle 40 ensure stable meshing of the large transmission gear 27 to prevent derailment. The front rotating barrel support 20 and the rear rotating barrel support 26 are fixed to the rotary screening barrel 19 and the bottom support frame 23 by connecting bolts 32 to prevent the barrel from shaking when rotating and to ensure screening accuracy. When the screening time ends as displayed on the main control box screen 2, the operator stops the vibration of the feeding vibration device via the main control box 1; then, by operating the control knob 7 of the auxiliary control box 6, hydraulic oil is directed into the lower lifting hydraulic outer cylinder 35, and the lower lifting hydraulic inner column 34 extends out of the cylinder body, driving the transport tire 24 to rise through the lower lifting hydraulic cylinder connecting shaft 36, thereby raising the front of the bottom support frame 23 and causing the rotating screening barrel 19 to form an inclination angle of 5°-15°; while maintaining the rotation of the rotating screening barrel 19, large particles remaining in the barrel with a particle size greater than the width of the screen gap of the rotating screening barrel 19 slide along the inclined barrel wall and are discharged from the rear discharge port 28, falling into the designated waste collection area, until the main control box screen 2 displays that there is no residual material in the barrel, and the rotating screening device is stopped. The lower hydraulic inner column 34 retracts under the control of the auxiliary control box 6, and the bottom support frame 23 returns to a horizontal state. The operator turns off the power of the main control box 1, cuts off the hydraulic oil transmission, and cleans the equipment: cleans the residual material debris in the feeding trough 12, checks whether the vibrating screen 11 is damaged, and replaces it in time if it is damaged, wipes the main control box screen 2 and the auxiliary control box screen 5, and checks whether there is any leakage or damage in the hydraulic oil transmission pipe 9 and the power control line 10 to ensure that the equipment is stable when used next time. The qualified fine particles collected at the lower discharge port 22 are measured and stored, while the large particles discharged at the rear discharge port 28 are transferred to a designated site. If it is necessary to change the working position, the equipment can be moved by the transport tires 24 to complete the entire screening process.

[0037] Finally, it should be noted that the electronic components in the main control cabinet 4, the secondary control cabinet screen 5, etc. in this embodiment are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. In the idle space of this device, all the above-mentioned electrical components are connected by wires. The specific connection method should refer to the working order between the electrical components in the above working principle to complete the electrical connection. They are all technologies known in the art.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A waste rock material screening device with vibrating rotary feeding, characterized in that: It includes an electro-hydraulic control device, a feeding vibration device, a feeding device, a lifting and unloading device, and a rotary screening device; The rotary screening device includes a rotary screening drum (19), rotating blades (38), bearing shaft (46), upper shaft slot (48), lower shaft slot (47), front drum support (20), rear drum support (26), connecting bolts (32), motor support bracket (30), rotary motor (29), motor shaft washer (44), motor shaft (45), small transmission gear (43), large transmission gear (27), and drum fixing plate (19). 42) Gear baffle (40), front baffle (31), bottom baffle (37), rear baffle (41) and lower discharge port (22); the rotating blades (38) are set inside the rotating screening barrel (19), the bearing shaft (46) is embedded outside the rotating screening barrel (19), and the bearing shaft (46) is respectively locked in the upper shaft slot (48) and the lower shaft slot (47); the front rotating barrel support (20) and the rear rotating barrel support (26) are both The front rotating drum support (20) and the rear rotating drum support (26) are connected to the bottom support frame (23) and fixed to the relevant structure of the rotating screening drum (19) by connecting bolts (32); the motor support support (30) is set on the bottom support frame (23) and the rotating motor (29) is fixed on the motor support support (30); the motor shaft washer (44), the motor shaft (45) and the small transmission gear (43) are sequentially set on the output end of the rotating motor (29), the small transmission gear (43) meshes with the large transmission gear (27), and the large transmission gear (27) is sleeved on the outside of the rotating screening drum (19); the rotating drum fixing plate (42) and the gear baffle (40) are set on the outside of the large transmission gear (27); the front baffle (31), the bottom baffle (37) and the rear baffle (41) are all set on the lower part of the bottom support frame (23), and the lower discharge port (22) is opened in the middle of the bottom baffle (37).

2. The waste rock material screening device with vibrating rotary feeding according to claim 1, characterized in that: The electro-hydraulic control device includes a main control box (1), a main control box screen (2), a main control box console (3), a main control box cabinet (4), a secondary control box (6), a secondary control box screen (5), an operating knob (7), a secondary control box fixing component (8), a hydraulic oil transmission pipe (9), and a power control conduit (10). The main control box screen (2) and the main control box console (3) are mounted on the main control box (1), and the main control box (1) is connected to the main control box cabinet (4). The main control box (1) transmits electrical signals through the power control conduit (10) and transmits hydraulic oil through the hydraulic oil transmission pipe (9), and both the power control conduit (10) and the hydraulic oil transmission pipe (9) are connected to the secondary control box (6). The secondary control box screen (5) and the operating knob (7) are mounted on the secondary control box (6), and the secondary control box (6) is fixedly connected to the bottom support frame (23) through the secondary control box fixing component (8).

3. The waste rock material screening device with vibrating rotary feeding according to claim 1, characterized in that: The feeding vibration device includes a hydraulic outer cylinder (17) and a hydraulic inner column (18), and the hydraulic inner column (18) can reciprocate within the hydraulic outer cylinder (17).

4. The waste rock material screening device with vibrating rotary feeding according to claim 3, characterized in that: The feeding device includes a feeding trough (12), a vibrating screen (11), a connecting rod (13), a connecting block (14), a feeding chute (15), and a rubber folding sleeve (16); the vibrating screen (11) is embedded in the feeding trough (12), the feeding trough (12) is connected to the connecting block (14) through the connecting rod (13), and the connecting block (14) is connected to the hydraulic outer cylinder (17); one end of the feeding chute (15) is connected to the feeding trough (12), and the other end is connected to the rubber folding sleeve (16).

5. The waste rock material screening device with vibrating rotary feeding according to claim 4, characterized in that: The rubber folding sleeve (16) of the feeding device is connected to the inlet (21) of the rotary screening barrel (19) of the rotary screening device, and the outlet (28) of the rotary screening barrel (19) is used to discharge materials larger than the screening particle size.

6. The waste rock material screening device with vibrating rotary feeding according to claim 1, characterized in that: The lifting and unloading device includes a lower lifting hydraulic cylinder fixing component (33), a lower lifting hydraulic inner column (34), a lower lifting hydraulic outer cylinder (35), a lower lifting hydraulic cylinder connecting shaft (36), a transport tire (24), a tire connecting shaft (25), and a transport tire connector (39). The lower lifting hydraulic cylinder fixing component (33) is located at the front of the bottom support frame (23). The lower lifting hydraulic outer cylinder (35) is connected to the bottom support frame (23) through the lower lifting hydraulic cylinder fixing component (33). The lower lifting hydraulic inner column (34) is sleeved inside the lower lifting hydraulic outer cylinder (35), and the lower lifting hydraulic inner column (34) is connected to the transport tire (24) through the lower lifting hydraulic cylinder connecting shaft (36). The tire connecting shaft (25) passes through the transport tire (24). The transport tire connector (39) is located at the rear of the bottom support frame (23), and the transport tire connector (39) is connected to the transport tire (24).

7. The waste rock material screening device with vibrating rotary feeding according to claim 1, characterized in that: The rotating blade (38) has three blades, and the three rotating blades (38) are evenly distributed inside the rotating screening barrel (19); the rotating barrel fixing plate (42) and the bottom support frame (23) are fixedly connected by welding; the motor shaft gasket (44) is made of elastic material to relieve the vibration generated when the motor shaft (45) is running; the inner sides of the front baffle (31), the bottom baffle (37) and the rear baffle (41) are all provided with wear-resistant liners.

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