A multi-stage screening mine stone cutting and conveying device

Abstract

The utility model relates to the technical field of mine machinery, and disclose a multistage screening mine stone blanking conveying device, including support platform, mounting bracket, fixed frame, feed structure, transmission assembly, screen disc structure and screening subassembly, realize the multistage screening and continuous conveying of stone material and the coordinated operation, the feed structure passes through the smooth feed hopper of inclination and the feed auxiliary claw with the protrusion, guarantee the smooth stone material and scatter the caking of unloading, transmission assembly is with motor as power source, through the pulley and the belt drive, synchronous drive feed auxiliary claw operation and vibration structure work, screen disc structure generates high frequency vibration with the help of connecting spring and eccentric drive, and the preliminary screening is completed in cooperation with the inclination design, prevent the screen mesh from blocking, in screening subassembly, the cylindrical sorting cage is equipped with sectional type different spacing gap, realizes accurate multistage grading under the rotation motor drive, and different size stone material is discharged from the corresponding sorting discharge port.

Description

Technical Field

[0001] This utility model relates to the field of mining machinery technology, specifically a multi-stage screening and conveying device for quarrying. Background Technology

[0002] In quarrying operations, the extracted stone particles vary greatly in size and must be graded and screened before they can be used as building aggregates, road construction materials, etc. Multi-stage screening quarrying material conveying devices are core equipment connecting the quarrying and raw material processing stages. Their core function is to accurately grade mixed stone through a multi-stage screening structure and simultaneously complete material feeding and continuous conveying, achieving efficient conversion from mined raw materials to standardized materials. In modern large-scale mining production, the grading accuracy of stone directly affects the efficiency of subsequent processing and the quality of finished products, while the continuity of material feeding and conveying is related to the smoothness of the overall production process. Therefore, this type of device has become a key piece of equipment for improving mining production efficiency and ensuring material quality, and is an important support for meeting the standardized stone needs of the construction, infrastructure and other industries.

[0003] Traditional quarry screening and conveying equipment generally has significant limitations. The screening grading design is often unreasonable, consisting mostly of single-stage or simple multi-stage structures. Grading accuracy is insufficient, making it difficult to precisely separate stones of different particle sizes. This results in the presence of substandard particles in the finished product, affecting subsequent use. The screening and conveying stages are independent, lacking coordinated design. After screening, the stone requires additional transfer equipment to proceed to the next process, increasing equipment investment and floor space requirements, and easily leading to material accumulation and conveying interruptions. The equipment has poor adaptability, making it difficult to cope with fluctuating stone production and uneven particle size distribution in mining operations. Furthermore, it has high energy consumption, insufficient operational stability, and frequent downtime due to malfunctions. These defects directly lead to low mining production efficiency, serious material waste, and increased labor and maintenance costs, failing to meet the demands of modern large-scale, high-efficiency, and low-cost mining production. Therefore, we propose a multi-stage screening and conveying device for quarrying. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a multi-stage screening and conveying device for quarrying, which solves the aforementioned problems.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a multi-stage screening and conveying device for quarrying, comprising:

[0006] The support platform, mounting frame, and fixing frame are provided. The mounting frame is fixedly installed on the top of the support platform. The top of the mounting frame is provided with a feeding structure. The side of the feeding structure is connected to a transmission component. The transmission component includes a connecting structure and a vibration structure. The bottom of the connecting structure is fixedly connected to the bottom of the inner side of the mounting frame. The vibration structure is fixedly installed on the inner side of the mounting frame. The top of the inner side of the mounting frame is fixedly installed with a screen plate structure. One bottom end of the screen plate structure is fixedly connected to the vibration structure. The fixing frame is provided on the side of the support platform.

[0007] A screening assembly is disposed on the top of the fixed frame. The screening assembly includes a rotating structure and a screening structure. The screening structure is rotatably mounted on the top of the fixed frame, and the rotating structure is fixedly mounted on the top of the fixed frame at the end away from the support platform.

[0008] Preferably, the feeding structure includes a feeding hopper, a feeding auxiliary claw, and a mounting shaft. The feeding hopper is fixedly installed on the top of the support platform. The inner side of the feeding hopper is smoothly inclined. A set of through circular holes is opened on the side of the feeding hopper. The mounting shaft is rotatably installed in the circular holes on the side of the feeding hopper. The mounting shaft is fixedly installed on the top of the mounting frame through a bearing seat. A feeding auxiliary claw is fixedly installed on the outer side of a section inside the feeding hopper. Multiple sets of circumferentially distributed protrusions are fixedly installed on the outer side of the feeding auxiliary claw.

[0009] Preferably, the connection includes a structure containing a motor, a first pulley, a first belt, and a second pulley. The motor is fixedly mounted on the top of the support platform. The first pulley is fixedly mounted on the end of the motor's output shaft. The second pulley is fixedly mounted on the end of the mounting shaft facing the first pulley. The second pulley is in the shape of a stepped disc. The large end of the second pulley disc is connected to the first pulley via a first belt.

[0010] Preferably, the vibration structure includes a second belt, a third pulley, and a connecting shaft. The second belt is connected to the outer side of the small end of the second pulley disc, and the third pulley is connected to the inner side of the other end of the second belt. The third pulley is fixedly installed at the outer end of the connecting shaft. The other end of the connecting shaft is an eccentric disc, and a connecting rod is rotatably installed on the outer side of the eccentric disc of the connecting shaft.

[0011] Preferably, the sieve disc structure includes connecting springs, a cover plate, and a sieve disc. Four sets of connecting springs are fixedly installed on the top of the mounting frame. The sieve disc is fixedly connected to the bottom of the connecting springs. The inside of the sieve disc is inclined. The outer wall of the sieve disc facing the connecting rod is fixedly connected to the connecting rod. A screen is fixedly installed on the top of the inside of the sieve disc. A cover plate is fixedly installed on the top of the sieve disc.

[0012] Preferably, the rotating structure includes a rotating motor, a fourth pulley, and a third belt. The rotating motor is fixedly mounted on the top of the fixed frame. The fourth pulley is fixedly mounted on the end of the output shaft of the fixed frame. The outer side of the fourth pulley is connected to the third belt, and the inner side of the other end of the third belt is also connected to a set of fourth pulleys.

[0013] Preferably, the screening structure includes a sorting cage and a connecting bearing seat. A set of symmetrical connecting bearing seats is fixedly installed at the center of the top two sides of the fixed frame. The sorting cage is fixedly installed between the inner sides of the connecting bearing seats. The sorting cage is cylindrical and has segmented gaps with different spacings on its outer side. One end of the sorting cage is fixedly connected to a fourth pulley at the end away from the rotating motor.

[0014] Preferably, a receiving hopper is fixedly installed on the end of the fixed frame facing the screen plate, and an outlet is opened on the side of the screen plate. The receiving hopper is directly below the outlet on the side of the screen plate. Multiple sets of linearly distributed sorting outlets are opened on the side of the fixed frame corresponding to the lower part of the sorting cage, and the sorting outlets correspond to different gaps with the sorting cage.

[0015] Compared with the prior art, this utility model provides a multi-stage screening and conveying device for quarrying, which has the following advantages:

[0016] 1. This multi-stage screening and conveying device for quarrying first performs preliminary grading through a screen disc structure. The screen mesh installed inside the screen disc can separate large-diameter impurities. The screen disc is suspended by four sets of connecting springs and, in conjunction with the eccentric disc drive of the vibrating structure, can generate high-frequency stable vibration, preventing stone from clogging the screen mesh and ensuring the accuracy of the preliminary screening. The stone material subsequently conveyed to the sorting cage through the receiving hopper will be precisely graded through its segmented gaps of different spacings. Stone materials of different sizes will be discharged from their corresponding sorting outlets, achieving high efficiency in sorting multiple sizes of stone. The efficient separation is achieved through a smooth, inclined structure on the inner side of the feed hopper that guides the stones to slide down naturally. Combined with the shaft-driven feed auxiliary claws, the circumferentially distributed protrusions on the outer side effectively break up clumps of stones, preventing blockage at the feed inlet and ensuring smooth feeding. The inclined design and vibration of the screen disc push the stones to move automatically towards the outlet, and then directly convey them to the sorting cage via the receiving hopper, eliminating the need for additional transfer steps. The sorting cage operates continuously under the drive of a rotating motor, performing precise screening while simultaneously using its own rotational power to propel the stones axially, achieving simultaneous screening and conveying. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the connecting shaft of this utility model;

[0019] Figure 3This is a schematic diagram of the receiving hopper of this utility model;

[0020] Figure 4 This is a schematic diagram of the feeding auxiliary claw of this utility model.

[0021] In the diagram: 1. Support platform; 2. Mounting frame; 3. Feed hopper; 4. Feeding auxiliary claw; 5. Mounting shaft; 6. Motor; 7. First pulley; 8. First belt; 9. Second pulley; 10. Second belt; 11. Third pulley; 12. Connecting shaft; 13. Connecting rod; 14. Connecting spring; 15. Cover plate; 16. Screen plate; 17. Fixing frame; 18. Receiving hopper; 19. Sorting cage; 20. Rotating motor; 21. Fourth pulley; 22. Third belt; 23. Sorting outlet; 24. Connecting bearing seat. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-4 A multi-stage screening and conveying device for quarrying, comprising:

[0024] The support platform 1, the mounting frame 2, and the fixing frame 17 are provided. The mounting frame 2 is fixedly installed on the top of the support platform 1. The top of the mounting frame 2 is provided with a feeding structure. The side of the feeding structure is connected to a transmission component. The transmission component includes a connecting structure and a vibration structure. The bottom of the connecting structure is fixedly connected to the bottom of the inside of the mounting frame 2. The vibration structure is fixedly installed on the inside side of the mounting frame 2. The top of the inside of the mounting frame 2 is fixedly installed with a screen plate structure. One end of the bottom of the screen plate structure is fixedly connected to the vibration structure. The fixing frame 17 is provided on the side of the support platform 1.

[0025] The screening assembly is located on the top of the fixed frame 17. The screening assembly includes a rotating structure and a screening structure. The screening structure is rotatably mounted on the top of the fixed frame 17, and the rotating structure is fixedly mounted on the top of the fixed frame 17 at the end away from the support platform 1.

[0026] Furthermore, the feeding structure includes a feeding hopper 3, feeding auxiliary claws 4, and a mounting shaft 5. The feeding hopper 3 is fixedly mounted on the top of the support platform 1. The inner side of the feeding hopper 3 is smoothly inclined. A set of through circular holes is opened on the side of the feeding hopper 3. The mounting shaft 5 is rotatably mounted in the circular holes on the side of the feeding hopper 3. The mounting shaft 5 is fixedly mounted on the top of the mounting frame 2 through a bearing seat. The feeding auxiliary claw 4 is fixedly mounted on the outer side of a section inside the feeding hopper 3. Multiple sets of circumferentially distributed protrusions are fixedly mounted on the outer side of the feeding auxiliary claw 4. The smooth inclined design of the feeding hopper 3 not only guides the stone to slide down but also reduces stone residue and wear. The mounting shaft 5 is mounted through a bearing seat to ensure stability during high-speed rotation. In addition to breaking up the stone, the protrusions of the feeding auxiliary claw 4 can also evenly distribute the stone, avoid local overload of the screen plate 16, and improve the uniformity of screening.

[0027] Furthermore, the connection structure includes a motor 6, a first pulley 7, a first belt 8, and a second pulley 9. The motor 6 is fixedly mounted on the top of the support platform 1. The first pulley 7 is fixedly mounted on the end of the output shaft of the motor 6. The second pulley 9 is fixedly mounted on the end of the mounting shaft 5 facing the first pulley 7. The second pulley 9 is a stepped disc shape. The large end of the second pulley 9 is connected to the first pulley 7 through the first belt 8. The stepped design of the second pulley 9 can adapt to different transmission requirements through different diameter wheel ends, flexibly adjusting the speed ratio between the feeding auxiliary claw 4 and the vibration structure. The cooperation between the first belt 8 and the pulleys ensures stable power transmission with low noise, facilitating daily maintenance and component replacement of the equipment.

[0028] Furthermore, the vibration structure includes a second belt 10, a third pulley 11, and a connecting shaft 12. The second belt 10 is connected to the outer side of the small end of the second pulley 9 disc, and the third pulley 11 is connected to the inner side of the other end of the second belt 10. The third pulley 11 is fixedly installed at the outward end of the connecting shaft 12. The other end of the connecting shaft 12 is an eccentric disc. A connecting rod 13 is rotatably installed on the outer side of the eccentric disc of the connecting shaft 12. The rotatable connection design of the connecting rod 13 with the screen disc 16 and the connecting shaft 12 converts the circumferential motion of the eccentric disc into the reciprocating vibration of the screen disc 16, resulting in high transmission efficiency. The eccentricity of the eccentric disc of the connecting shaft 12 is precisely designed to ensure that the vibration amplitude of the screen disc 16 is moderate, which ensures both screening effect and avoids structural damage.

[0029] Furthermore, the screen structure includes connecting springs 14, a cover plate 15, and a screen plate 16. Four sets of connecting springs 14 are fixedly installed on the top of the mounting frame 2. The bottom of the connecting springs 14 is fixedly connected to the screen plate 16. The inside of the screen plate 16 is inclined. The outer wall of the end of the screen plate 16 facing the connecting rod 13 is fixedly connected to the connecting rod 13. A screen mesh is fixedly installed on the top of the screen plate 16. The cover plate 15 is fixedly installed on the top of the screen plate 16. In addition to preventing splashing, the cover plate 15 can also reduce dust diffusion and improve the working environment. The four sets of connecting springs 14 are symmetrically distributed to ensure that the screen plate 16 is subjected to balanced force when vibrating, thereby improving the stability of equipment operation. The screen mesh inside the screen plate 16 is made of high-strength material, which is wear-resistant and impact-resistant, extending its service life.

[0030] Furthermore, the rotating structure includes a rotating motor 20, a fourth pulley 21, and a third belt 22. The rotating motor 20 is fixedly mounted on the top of the fixed frame 17. The fourth pulley 21 is fixedly mounted on the end of the output shaft of the fixed frame 17. The outer side of the fourth pulley 21 is connected to the third belt 22. The inner side of the other end of the third belt 22 is also connected to a set of fourth pulleys 21. The double cooperation between the fourth pulley 21 and the third belt 22 enhances the reliability of power transmission and avoids equipment downtime due to a single transmission path failure. The connecting bearing seat 24 provides stable support for the sorting cage 19, reduces radial runout during rotation, ensures grading accuracy, and reduces operating resistance and energy consumption.

[0031] Furthermore, the screening structure includes a sorting cage 19 and connecting bearing seats 24. A set of symmetrical connecting bearing seats 24 are fixedly installed on the center of the top two sides of the fixed frame 17. The sorting cage 19 is fixedly installed between the inner sides of the connecting bearing seats 24. The sorting cage 19 is cylindrical, and the outer side of the sorting cage 19 is provided with segmented gaps of different spacings. One end of the sorting cage 19 is fixedly connected to the fourth pulley 21 at the end away from the rotating motor 20. The segmented gaps of the sorting cage 19 are precisely set according to the particle size requirements. Different gap specifications of the sorting cage can be replaced according to production needs. Its cylindrical structure makes the stone roll evenly inside, ensuring that each particle can fully contact the screen gap, avoiding missed screening and misscreening, and improving the accuracy of grading.

[0032] Furthermore, a receiving hopper 18 is fixedly installed on one end of the fixed frame 17 facing the screen plate 16. An outlet is opened on the side of the screen plate 16. The receiving hopper 18 is directly below the outlet on the side of the screen plate 16. Multiple sets of linearly distributed sorting outlets 23 are opened on the side of the fixed frame 17 corresponding to the lower part of the sorting cage 19. The different gaps between the sorting outlets 23 and the sorting cage 19 correspond. The tilt angle of the receiving hopper 18 has been optimized to ensure that the stone enters the sorting cage 19 quickly and smoothly without accumulation or residue. The gaps between the multiple sets of sorting outlets 23 and the sorting cage 19 are precisely corresponding. The outlets are equipped with guide structures to facilitate the docking of subsequent collection devices and realize the orderly transfer of standardized stone.

[0033] Structural Description:

[0034] Support platform 1: Support platform 1 is the basic support structure of the device. It is a stable platform with a mounting bracket 2 fixed on the top and a fixing bracket 17 on the side, providing a stable installation foundation for each component and ensuring the overall operational stability of the equipment.

[0035] Mounting frame 2: Mounting frame 2 is the mounting carrier for the upper components. It is fixed to the top of the support platform 1. The top is equipped with a feeding structure, the bottom of the interior is connected to the transmission components, the inner side is fixed with a vibration structure, and the inner top is equipped with a screen plate structure to achieve precise assembly of each component.

[0036] Feed hopper 3: Feed hopper 3 is a stone feeding structure. The inner side is smooth and inclined, and the side has a through round hole to accommodate and guide the stone to slide down. It works with the feeding auxiliary claw 4 to avoid blockage and ensure smooth feeding.

[0037] Feeding auxiliary claw 4: The feeding auxiliary claw 4 is installed on the outer side of a section inside the feed hopper 3 of the mounting shaft 5. The outer side has circumferentially distributed protrusions. It rotates with the mounting shaft 5 to break up lumpy stones and distribute them evenly, avoiding local overload of the screen plate 16.

[0038] Mounting shaft 5: Mounting shaft 5 is fixed to the top of mounting frame 2 through bearing seat, passes through the round hole on the side of feed hopper 3, one end is connected to second pulley 9, and the other end is installed with feed auxiliary claw 4, which transmits power to drive feed auxiliary claw 4 to rotate;

[0039] Motor 6: Motor 6 is a power output component, fixed to the top of the support platform 1. The first pulley 7 is installed at the end of the output shaft. Through the cooperation of the pulley and belt, it provides power to the feeding structure and the vibration structure.

[0040] First pulley 7: The first pulley 7 is fixed at the end of the output shaft of the motor 6 and is connected to the large end of the disc of the second pulley 9 through the first belt 8, so as to transmit the power of the motor 6 to the second pulley 9 and realize the power transmission.

[0041] First belt 8: The first belt 8 is a transmission connection component, connecting the first pulley 7 and the large end of the second pulley 9 disc, transmitting power from the motor 6, ensuring stable power transmission, and facilitating maintenance and replacement;

[0042] Second pulley 9: The second pulley 9 is a stepped disc shape, fixed at the end of the mounting shaft 5. The large end is connected to the first belt 8, and the small end is connected to the second belt 10. It can adapt to different transmission requirements and adjust the speed ratio of the feeding and vibration structure.

[0043] Second belt 10: The second belt 10 connects the small end of the second pulley 9 disc to the third pulley 11, transmitting power to the vibration structure and ensuring that the vibration structure and the feeding structure operate in tandem.

[0044] Third pulley 11: The third pulley 11 is fixed at the outward end of the connecting shaft 12. It receives power through the second belt 10 and drives the connecting shaft 12 to rotate, providing power for the vibration of the screen plate 16. Connecting shaft 12: One end of the connecting shaft 12 is an eccentric disk with a connecting rod 13 rotatably mounted on the outer side. The other end is fixed with the third pulley 11, converting the rotational motion of the third pulley 11 into eccentric motion, which drives the screen plate 16 to vibrate through the connecting rod 13.

[0045] Connecting rod 13: Connecting rod 13 is a transmission connecting component. One end is rotatably connected to the eccentric disk of connecting shaft 12, and the other end is fixed to the outer wall of screen disk 16, converting the eccentric motion of connecting shaft 12 into the reciprocating vibration of screen disk 16.

[0046] Connecting spring 14: There are four sets of connecting springs 14, which are symmetrically fixed between the top of the mounting frame 2 and the screen plate 16. While supporting the screen plate 16, they work with the eccentric transmission to make the screen plate 16 generate high-frequency stable vibration, ensuring balanced force.

[0047] Cover plate 15: Cover plate 15 is fixed to the top of screen plate 16 and is protective to prevent stone from splashing when vibrating, while reducing dust diffusion and improving the working environment;

[0048] Screening disc 16: The inside of the screening disc 16 is inclined, with a screen installed on the top. One end of the outer wall is connected to a connecting rod 13. Through vibration and inclination design, the stone is initially screened and moved to the outlet.

[0049] Fixed frame 17: Fixed frame 17 is the installation base of the screening component. The receiving hopper 18 is fixed on the side, and the connecting bearing seats 24 are installed on both sides of the top. The sorting discharge port 23 is opened on the side corresponding to the bottom of the sorting cage 19 to support the stable operation of the screening component.

[0050] Feeding hopper 18: The feeding hopper 18 is fixed at the end of the fixed frame 17 facing the screen plate 16, located directly below the outlet of the screen plate 16, with an optimized tilt angle, to receive the stone material after preliminary screening and transport it to the sorting cage 19, without any accumulation or residue.

[0051] Sorting cage 19: The sorting cage 19 is cylindrical and installed between the connecting bearing seats 24. One end is connected to the fourth pulley 21. The outer side has segmented gaps with different spacings. When rotating, it performs precise multi-stage screening of the stone.

[0052] Rotary motor 20: The rotary motor 20 is fixed to the top of the fixed frame 17, and the fourth pulley 21 is installed at the end of the output shaft. Power is transmitted through the third belt 22 to drive the sorting cage 19 to rotate continuously.

[0053] Fourth pulley 21: There are two sets of fourth pulleys 21. One set is connected to the output shaft of the rotating motor 20, and the other set is connected to one end of the sorting cage 19. They are connected by the third belt 22 to transmit the power of the rotating motor 20 to the sorting cage 19.

[0054] Third belt 22: The third belt 22 connects two sets of fourth pulleys 21, which enhances the reliability of power transmission, avoids single transmission path failure, and ensures stable operation of sorting cage 19.

[0055] Sorting outlet 23: The sorting outlet 23 is a multi-group linear distribution structure, which is opened on the side of the fixed frame 17 below the sorting cage 19 and corresponds to different gaps of the sorting cage 19. It is used to discharge graded stone materials of different particle sizes.

[0056] Connecting bearing housing 24: The connecting bearing housing 24 consists of two sets of symmetrically installed support structures, fixed to the center of the top two sides of the fixed frame 17, with the sorting cage 19 installed on the inner side to reduce the radial runout of the sorting cage 19 when it rotates and reduce the operating resistance.

[0057] Working principle: After the motor 6 starts, it drives the first pulley 7 at the end of the output shaft to rotate. The first pulley 7 drives the second pulley 9 at the end of the mounting shaft 5 to rotate synchronously through the first belt 8, so that the mounting shaft 5 rotates stably in the round hole on the side of the feed hopper 3. The feed auxiliary claw 4 on the outside of the mounting shaft 5 operates accordingly. The protrusions distributed on its outer circumference continuously break up the lumpy stones. With the help of the smooth inclined structure on the inside of the feed hopper 3, the stones are guided to slide smoothly into the screen plate 16, avoiding blockage of the feed inlet. At the same time, the small end of the disc of the second pulley 9 drives the third pulley 11 to rotate through the second belt 10. The third pulley 11 drives the connecting shaft 12 to rotate. The eccentric disc at the other end of the connecting shaft 12 drives the screen disc 16 to move through the connecting rod 13. The top of the screen disc 16 is connected to the top of the mounting frame 2 through four sets of connecting springs 14. Under the action of eccentric transmission and spring elasticity, high-frequency stable vibration is formed. The screen inside the screen disc 16 performs preliminary screening of the stone and separates large-diameter impurities. The cover plate 15 can prevent the stone from splashing during vibration. The inclined screen disc 16 pushes the stone after preliminary screening to move to the side outlet and fall directly into the receiving hopper at the top of the fixed frame 17. 18. The receiving hopper 18 conveys the stone material into the sorting cage 19 connected to the bearing seats 24. At this time, the rotating motor 20 starts, and the fourth pulley 21 at the end of its output shaft drives another set of fourth pulleys 21 to rotate through the third belt 22, thereby driving the sorting cage 19 to rotate continuously. The segmented gaps with different spacings on the outside of the sorting cage 19 perform precise multi-stage screening of the stone material. Stone materials of different particle sizes are discharged from the corresponding sorting outlets 23 on the side of the fixed frame 17, realizing the classification and collection of standardized stones of multiple specifications. Throughout the process, the support platform 1 serves as the mounting frame 2 and each set of... The components provide stable support, the mounting frame 2 ensures the precise assembly of the feeding structure, transmission components and screen structure, and the fixed frame 17 provides a stable installation foundation for the screening components. The various structures achieve power coordination through belt drive, eccentric drive and other means. From feeding and dispersing, preliminary screening, precise grading to classified discharge, a continuous linkage operation is formed. This not only solves the problems of insufficient grading accuracy and conveying interruption of traditional equipment, but also realizes the synchronization of screening and conveying. In the end, it achieves the effect of efficient grading and stable conveying of stone, and meets the processing needs of standardized stone for large-scale mining production.

[0058] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage screening and conveying device for quarrying, characterized in that, include: The support platform (1), the mounting frame (2) and the fixing frame (17) are provided. The mounting frame (2) is fixedly installed on the top of the support platform (1). The top of the mounting frame (2) is provided with a feeding structure. The side of the feeding structure is connected to a transmission component. The transmission component includes a connecting structure and a vibration structure. The bottom of the connecting structure is fixedly connected to the bottom of the inside of the mounting frame (2). The vibration structure is fixedly installed on the inside side of the mounting frame (2). The top of the inside of the mounting frame (2) is fixedly installed with a screen plate structure. One end of the bottom of the screen plate structure is fixedly connected to the vibration structure. The side of the support platform (1) is provided with a fixing frame (17). A screening assembly is provided on the top of the fixed frame (17). The screening assembly includes a rotating structure and a screening structure. The screening structure is rotatably installed on the top of the fixed frame (17). The rotating structure is fixedly installed on the top of the fixed frame (17) at the end away from the support platform (1).

2. The multi-stage screening and conveying device for quarrying as described in claim 1, characterized in that, The feeding structure includes a feeding hopper (3), a feeding auxiliary claw (4), and a mounting shaft (5). The feeding hopper (3) is fixedly installed on the top of the support platform (1). The inner side of the feeding hopper (3) is smoothly inclined. A set of through round holes is opened on the side of the feeding hopper (3). The mounting shaft (5) is rotatably installed in the round hole on the side of the feeding hopper (3). The mounting shaft (5) is fixedly installed on the top of the mounting frame (2) through a bearing seat. The feeding auxiliary claw (4) is fixedly installed on the outer side of a section inside the feeding hopper (3). Multiple sets of circumferentially distributed protrusions are fixedly installed on the outer side of the feeding auxiliary claw (4).

3. The multi-stage screening and conveying device for quarrying as described in claim 2, characterized in that, The connection includes a structure package motor (6), a first pulley (7), a first belt (8), and a second pulley (9). The motor (6) is fixedly installed on the top of the support platform (1). The first pulley (7) is fixedly installed at the end of the output shaft of the motor (6). The second pulley (9) is fixedly installed at the end of the mounting shaft (5) facing the first pulley (7). The second pulley (9) is a stepped disc shape. The large end of the disc of the second pulley (9) is connected to the first pulley (7) through the first belt (8).

4. A multi-stage screening and conveying device for quarrying materials according to claim 3, characterized in that, The vibration structure includes a second belt (10), a third pulley (11), and a connecting shaft (12). The outer side of the small end of the second pulley (9) is connected to the second belt (10), and the inner side of the other end of the second belt (10) is connected to the third pulley (11). The third pulley (11) is fixedly installed at the outward end of the connecting shaft (12). The other end of the connecting shaft (12) is an eccentric disk, and a connecting rod (13) is rotatably installed on the outer side of the eccentric disk of the connecting shaft (12).

5. A multi-stage screening and conveying device for quarrying materials according to claim 4, characterized in that, The sieve disc structure includes connecting springs (14), cover plate (15) and sieve disc (16). Four sets of connecting springs (14) are fixedly installed on the top of the mounting frame (2). The bottom of the connecting springs (14) is fixedly connected to the sieve disc (16). The inside of the sieve disc (16) is inclined. The outer wall of the end of the sieve disc (16) facing the connecting rod (13) is fixedly connected to the connecting rod (13). A screen is fixedly installed on the top of the inside of the sieve disc (16). The top of the sieve disc (16) is fixedly installed with cover plate (15).

6. A multi-stage screening and conveying device for quarrying materials according to claim 1, characterized in that, The rotating structure includes a rotating motor (20), a fourth pulley (21), and a third belt (22). The rotating motor (20) is fixedly installed on the top of the fixed frame (17). The fourth pulley (21) is fixedly installed at the end of the output shaft of the fixed frame (17). The third belt (22) is connected to the outer side of the fourth pulley (21), and a set of fourth pulleys (21) is also connected to the inner side of the other end of the third belt (22).

7. A multi-stage screening and conveying device for quarrying materials according to claim 1, characterized in that, The screening structure includes a sorting cage (19) and a connecting bearing seat (24). A set of symmetrical connecting bearing seats (24) are fixedly installed on the center of the top two sides of the fixed frame (17). The sorting cage (19) is fixedly installed between the inner sides of the connecting bearing seats (24). The sorting cage (19) is cylindrical, and the outer side of the sorting cage (19) is provided with segmented gaps of different spacings. One end of the sorting cage (19) is fixedly connected to the fourth pulley (21) at the end away from the rotating motor (20).

8. A multi-stage screening and conveying device for quarrying materials according to claim 7, characterized in that, A receiving hopper (18) is fixedly installed on one end of the fixed frame (17) facing the screen plate (16). An outlet is opened on the side of the screen plate (16). The receiving hopper (18) is directly below the outlet on the side of the screen plate (16). Multiple sets of linearly distributed sorting outlets (23) are opened on the side of the fixed frame (17) corresponding to the lower part of the sorting cage (19). The sorting outlets (23) correspond to different gaps of the sorting cage (19).

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