Gravel particle screening device and screening method
By designing an automatic detection and switching mechanism, the problem of easy clogging in traditional vibrating screens is solved, and the automatic adjustment and cleaning of the screen is realized, improving screening efficiency and ensuring the efficient operation of the equipment.
Patent Information
- Application Number
- CN202511120868.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-12
- Publication Date
- 2025-10-31
AI Technical Summary
Traditional vibrating screens are prone to clogging, have low screen replacement efficiency, and cannot promptly detect screen clogging status, thus affecting screening efficiency.
A crushed stone particle screening device was designed, which includes a vibrating screen, a detection switching mechanism, and a screen cleaning mechanism. The detection component automatically detects screen blockage, the switching component automatically adjusts the screen angle, the return component returns the blocked ore for crushing, and the cleaning plate automatically cleans the screen.
It enables automatic detection and switching of screen blockage, improves screening efficiency, reduces the frequency of manual inspection, and ensures the continuous and efficient operation of screening equipment.
Smart Images
Figure CN120861398A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of crushed stone screening technology, specifically to a crushed stone particle screening device and screening method. Background Technology
[0002] Ore screening refers to the process of separating valuable minerals from gangue minerals after crushing and grinding the ore according to the physicochemical properties of different minerals in the ore, and using methods such as gravity separation, flotation, and magnetic separation. This process also aims to separate various associated or co-existing valuable minerals as much as possible, remove or reduce harmful impurities, and obtain the desired raw materials. In the field of ore processing and production, particle screening is a key process. Screening can accurately separate high-value-added components while avoiding impurities that reduce the overall grade.
[0003] Traditional vibrating screens achieve particle size classification through multiple layers of fixed screens. However, traditional vibrating screens have several shortcomings. The screens are prone to clogging and failure, allowing fine particles to accumulate on the screen surface, hindering screening efficiency and requiring frequent shutdowns for cleaning. Furthermore, screen replacement is inefficient, requiring operation to be stopped and the screen body disassembled, significantly reducing equipment utilization. Additionally, when the screen is clogged, operators cannot obtain timely information about the clogging status, making it difficult to respond promptly to abnormal conditions and affecting screening efficiency. Therefore, we propose a crushed stone particle screening device and method. Summary of the Invention
[0004] The purpose of this invention is to provide a crushed stone particle screening device and screening method, which solves the problems of existing ore particle screening devices being unable to obtain the screen blockage status in a timely manner and the inconvenience of replacing the screen.
[0005] To achieve the above objectives, the present invention provides the following technical solution: A crushed stone particle screening device includes a housing, with a feed inlet at the top of the housing, and further includes... Vibrating screen mechanism, used for vibrating screening of ore particles; The detection and switching mechanism is used to detect screen blockage and switch screens accordingly. The screen cleaning mechanism is used to clean clogged screens; The vibrating screen mechanism includes a support base, which is slidably connected to the top of the inner part of the box. Multiple baffles are fixedly connected to the outside of the support base. The detection switching mechanism includes a detection component, which is disposed between the baffles.
[0006] Preferably, a screen is movably connected in the middle of the box, a vibrating spring is fixedly connected to the top of the screen, a support ring is connected to the outside of the screen, the vibrating spring is fixedly connected to the inside of the support ring, the support ring and the screen are rotatably connected to the bottom of the support base, the baffles are equidistantly arranged, and a barrier net is slidably connected to the bottom of the baffle.
[0007] Preferably, a support cylinder is fixedly connected in the middle of the support base, and a drive assembly is connected inside the support cylinder. The drive assembly includes a drive column movably connected inside the support cylinder. Arc-shaped protrusions are fixedly connected to the side of the drive column and the support cylinder. A motor is fixedly connected to the bottom of the housing, and the drive column is fixedly connected to the end of the motor output shaft.
[0008] Preferably, the detection assembly includes a detection plate that is slidably connected between baffles. The detection plate has a trumpet-shaped structure, a buffer spring is fixedly connected to the top edge of the detection plate, and a positioning plate is fixedly connected to the side of the detection plate.
[0009] Preferably, the detection switching mechanism further includes a switching component, which includes a drive block. The drive block has an arc-shaped structure and is rotatably connected to a support cylinder. A drive cylinder is rotatably mounted on the support cylinder, and a connecting rod is connected to the drive cylinder. The end of the connecting rod is rotatably connected to the drive block.
[0010] Preferably, a rotating cylinder is rotatably connected to the top of the driving cylinder, a driving plate is slidably connected to the side of the rotating cylinder, a detection block is rotatably connected to the side of the driving plate, and a magnet is fixedly connected to the top of the detection block.
[0011] Preferably, the support base is provided with a spring-loaded assembly, which includes a support plate rotatably connected to the top of the support base. The support plate has an arc-shaped structure. A metal seat is slidably connected to the bottom of the support plate. A return spring is fixedly connected between the metal seat and the support plate and to one end of the support plate. A limit frame is rotatably connected inside the support base. The bottom of the limit frame passes through the middle of the screen and is positioned to correspond to the position of the detection block.
[0012] Preferably, the cleaning mechanism includes a cleaning plate, which is slidably connected between baffles. A spring is fixedly connected to the top of the cleaning plate, a limiting plate is fixedly connected to one side of the cleaning plate, the end of the limiting plate abuts against the top of the rotating cylinder, and a cleaning head is fixedly connected to the bottom of the cleaning plate.
[0013] Preferably, the box body is provided with a return material assembly, the return material assembly includes a return material port, the return material port is opened on the side of the box body, a box door is slidably connected to the outside of the box body, a push rod is fixedly connected to the bottom end of the support ring, an arc-shaped push block is fixedly connected to the inside of the box door, and a spring is fixedly connected to the bottom end of the box door.
[0014] A method for screening crushed stone particles includes the following steps: S1. Screening of crushed ore: The crushed small ore particles are guided to the feed inlet of the screening equipment and screened through the screen. S2. Screen angle adjustment: After the screen is blocked, the detection component detects the amount of accumulated ore. When the amount of ore reaches the threshold, the switching component adjusts the screen angle and opens the return port simultaneously. The accumulated ore is then discharged from the box through the return port. S3. Processing of screened ore: The ore discharged from the return port is returned to the crushing equipment for further crushing.
[0015] By employing the above technical solution, the present invention provides a crushed stone particle screening device and screening method, which has at least the following beneficial effects: (1) The present invention can automatically detect the clogging of the screen through the automatic detection structure. When the screen is blocked, it can automatically rotate and switch the screen, rotating the blocked screen to the cleaning mechanism and rotating the unblocked screen to the vibrating screen mechanism, thereby maintaining the vibrating screen efficiency and reducing the reduction in ore particle screening efficiency caused by screen blockage.
[0016] (2) The present invention can cooperate with the detection component by setting the switching component. After the ore particles continue to accumulate, the switching component can be automatically turned on and the screen can be driven, thereby realizing the automatic rotation and switching of the screen, reducing the frequency of manual inspection and improving the efficiency of ore screening.
[0017] (3) The present invention can discharge the accumulated ore through the return component, thereby returning and crushing the ore particles that cause blockage, so that the ore particles can reach the set size of the pores, which facilitates the subsequent processing of the ore particles. Attached Figure Description
[0018] The accompanying drawings, which are provided to further illustrate the invention, constitute a part of this application: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention. Figure 1 ; Figure 3 This is a schematic diagram of the internal structure of the present invention. Figure 2 ; Figure 4 This is a schematic diagram of the internal structure of the present invention. Figure 3 ; Figure 5 This is a schematic diagram of the internal structure of the present invention. Figure 4 ; Figure 6 In this invention Figure 5 Enlarged view of point A; Figure 7 This is a schematic diagram of the internal structure of the support base of the present invention; Figure 8 This is a schematic diagram of the detection component structure of the present invention; Figure 9 This is a schematic diagram of the switching component structure of the present invention; Figure 10 This is a schematic diagram of the internal structure of the drive cylinder of the present invention; Figure 11 This is a schematic diagram of the driving block structure of the present invention; Figure 12 This is a schematic diagram of the springback assembly structure of the present invention; Figure 13 This is a schematic diagram of the door structure of the present invention; Figure 14 This is a schematic diagram of the drive board structure of the present invention; Figure 15 This is a schematic diagram of the support structure of the present invention.
[0019] In the diagram: 1. Box body; 2. Vibrating screen mechanism; 21. Screen; 22. Vibrating spring; 23. Support ring; 24. Support base; 25. Baffle; 26. Barrier mesh; 27. Support cylinder; 28. Drive assembly; 281. Drive column; 282. Arc-shaped protrusion; 283. Motor; 3. Detection switching mechanism; 31. Detection assembly; 311. Detection plate; 312. Buffer spring; 313. Positioning plate; 32. Switching assembly; 321. Drive block; 322. Drive cylinder; 323. Connecting rod; 33. Rotating cylinder; 34. Drive plate; 35. Detection block; 36. Magnet; 37. Rebound assembly; 371. Support plate; 372. Metal seat; 373. Reset spring; 38. Limiting frame; 4. Screening mechanism; 41. Cleaning plate; 42. Spring 1; 43. Limiting plate; 44. Cleaning head; 45. Return assembly; 451. Return port; 452. Box door; 453. Push rod; 454. Push block. Detailed Implementation
[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0021] Example 1 A crushed stone particle screening device and screening method, such as Figures 1-9 , Figure 12 , Figure 15 As shown, it includes a box body 1, with a feed inlet at the top of the box body 1, and a vibrating screen mechanism 2 inside the box body 1 for vibrating screening of ore particles.
[0022] Specifically, the vibrating screen mechanism 2 includes a screen 21, which is movably connected to the middle of the housing 1. A vibrating spring 22 is fixedly connected to the top of the screen 21, and a support ring 23 is connected to the outside of the screen 21. The vibrating spring 22 is fixedly connected to the inside of the support ring 23. The structure of the screen 21 can perform screening operations on ore particles, thereby separating ores of different particle sizes through vibration screening. The structure of the vibrating spring 22 can keep the screen 21 oscillating continuously, and the structure of the support ring 23 can support the screen 21, so that the screen 21 can perform vibration screening operations within a certain range.
[0023] Based on this, a support base 24 is slidably connected to the top of the inner box 1. A support ring 23 and a screen 21 are rotatably connected to the bottom of the support base 24. A baffle 25 is fixedly connected to the outside of the support base 24. The baffles 25 are equidistantly arranged. A barrier net 26 is slidably connected to the bottom of the baffle 25. The structure of the support base 24 can support the screen 21, allowing the support ring 23 to rotate at the bottom of the support base 24, thereby realizing the switching operation of the screen 21. At the same time, the structure of the baffle 25 and the barrier net 26 can block the screened ore particles, dividing the screen 21 into a use area and a cleaning area, preventing ore particles from moving to the cleaning area and affecting the cleaning effect of the screen 21. The barrier net 26, which slides inside the baffle 25, can move up and down with the vibration of the screen 21, thereby blocking the vibrating screen 21. The slidably connected support base 24 can be raised and lowered inside the box 1 through a limiting structure, thereby driving the screen 21.
[0024] Furthermore, a support cylinder 27 is fixedly connected to the middle of the support base 24, and a drive assembly 28 is connected inside the support cylinder 27. The drive assembly 28 includes a drive column 281 movably connected inside the support cylinder 27. Arc-shaped protrusions 282 are fixedly connected to the side of the drive column 281 and the support cylinder 27. A motor 283 is fixedly connected to the bottom of the housing 1. The drive column 281 is fixedly connected to the end of the output shaft of the motor 283. The structure of the support cylinder 27 can support the support base 24 and form two concentric cylindrical structures nested within each other. The structure of the drive column 281 can drive the support cylinder 27 and the support column through the arc-shaped protrusions 282, causing the support cylinder 27 and the support column to vibrate up and down. The structure of the motor 283 can provide power to the drive column 281.
[0025] Example 2 like Figure 2 , Figure 4 , Figure 5, Figure 7-12 , Figure 14 As shown, based on Embodiment 1, the vibrating screen mechanism 2 is provided with a detection and switching mechanism 3, which is used to detect the blockage of the screen 21 and switch the screen 21.
[0026] In this embodiment, the detection switching mechanism 3 includes a detection component 31, which includes a detection plate 311. The detection plate 311 is slidably connected between the baffles 25. The detection plate 311 has a trumpet-shaped structure. A buffer spring 312 is fixedly connected to the top edge of the detection plate 311, and a positioning plate 313 is fixedly connected to the side of the detection plate 311. The structure of the detection plate 311 can detect the amount of ore on the screen 21. When the screen 21 is blocked, the screen 21 cannot effectively screen the ore particles, and the ore particles continue to accumulate on the screen 21, thereby continuously pushing the detection plate 311 upward to realize the detection operation of the screen 21 blockage. At the same time, the detection plate... 311 has a funnel-shaped structure with a downward-concave center and an inverted conical bottom. This structure allows the top of the detection plate 311 to form a funnel-shaped structure that is wider at the top and narrower at the bottom, facilitating the movement of ore particles from the top to the bottom of the detection plate 311. At the same time, it can reduce the amount of ore particles that bounce back from the bottom to the top of the detection plate 311 when the screen 21 vibrates. The inverted conical bottom of the detection plate 311 can guide the upward-oscillating ore particles, allowing them to fill the bottom edge of the detection plate 311. This allows the ore to continuously accumulate at the bottom of the detection plate 311, thus enabling the detection of screen 21 blockage.
[0027] In addition, the detection switching mechanism 3 also includes a switching component 32, which includes a drive block 321. The drive block 321 has an arc-shaped structure and is rotatably connected to the support cylinder 27. The support cylinder 27 has a rotating drive cylinder 322, and the drive cylinder 322 is connected to a connecting rod 323. The end of the connecting rod 323 is rotatably connected to the drive block 321. The switching component 32 can switch the screen 21. The drive block 321 has an arc-shaped structure and surrounds the side of the support cylinder 27. The inner side of the screen 21 is provided with a rod-shaped or block-shaped structure that cooperates with the drive block 321. At the same time, the drive block 321 has two layers. The two layers of drive blocks 321 cooperate with each other so that the screen 21 can rotate along the arc-shaped drive block 321 when rising or falling, thereby realizing the continuous rotation switching operation of the screen 21.
[0028] Based on this, a rotating cylinder 33 is rotatably connected to the top of the drive cylinder 322, a drive plate 34 is slidably connected to the side of the rotating cylinder 33, a detection block 35 is rotatably connected to the side of the drive plate 34, and a magnet 36 is fixedly connected to the top of the detection block 35. The rotating cylinder 33 can drive the drive cylinder 322 to move up and down, and the rotating cylinder 33 can rotate at the top of the drive cylinder 322. The cooperation between the drive plate 34 and the detection block 35 can form a unidirectional structure, so that the positioning plate 313 can only drive the detection block 35 upward and cannot drive the detection block 35 downward. In addition, the drive plate 34 can slide on the outside of the rotating cylinder 33, so the rotating cylinder 33 can only be driven when the detection plate 311 rises to near the highest point.
[0029] Based on this, the support base 24 is provided with a spring-loaded assembly 37. The spring-loaded assembly 37 includes a support plate 371 rotatably connected to the top of the support base 24. The support plate 371 has an arc-shaped structure. A metal seat 372 is slidably connected to the bottom of the support plate 371. A return spring 373 is fixedly connected between the metal seat 372 and the support plate 371 and at one end of the support plate 371. The magnet 36 can cooperate with the metal seat 372 to position the rotating cylinder 33 when it rises to the highest point, thereby keeping the drive block 321 fixed and facilitating the continuous guidance of the drive block 321 for the rotation switching of the screen 21.
[0030] Furthermore, a limiting frame 38 is rotatably connected inside the support base 24. The bottom end of the limiting frame 38 passes through the middle of the screen 21. The limiting frame 38 and the detection block 35 are positioned corresponding to each other. The structure of the limiting frame 38 can drive the drive plate 34, so that the drive plate 34 can drive the support plate 371 to rotate continuously through the metal seat 372. The rotation amplitude of the support plate 371 is limited by the return spring 373. Therefore, the support plate 371 can limit the rotation angle of the drive plate 34. At the same time, the top of the limiting frame 38 is offset from the metal seat 372. That is, after the support plate 371 rotates to the end, the limiting frame 38 can rotate and separate the drive plate 34 from the metal seat 372, so that the drive block 321 automatically returns to its original position after driving the screen 21 to the set angle, which facilitates the normal operation of the screen 21.
[0031] Example 3 like Figures 1-7 , Figure 13 As shown, based on Embodiment 2, the vibrating screen mechanism 2 is provided with a screen cleaning mechanism 4 for cleaning the blocked screen 21.
[0032] In this embodiment, the cleaning mechanism 4 includes a cleaning plate 41, which is slidably connected between baffles 25. A spring 42 is fixedly connected to the top of the cleaning plate 41, and a limiting plate 43 is fixedly connected to one side of the cleaning plate 41. The end of the limiting plate 43 abuts against the top of the rotating cylinder 33. A cleaning head 44 is fixedly connected to the bottom of the cleaning plate 41. The cleaning plate 41 can continuously clean the screen 21 through the cleaning head 44. The cleaning head 44 has a conical or needle-like structure, which can effectively clean the screen 21. The spring 42 can continuously vibrate the cleaning plate 41, cleaning the cleaning area of the screen 21 while vibrating and screening in the screening area of the screen 21. The limiting plate 43 can cooperate with the rotating cylinder 33. When the screen 21 rotates and switches, the cleaning plate 41 can rise synchronously with the rotating cylinder 33, thereby avoiding the cleaning head 44 from sliding on the surface of the screen 21 and causing damage to the screen 21.
[0033] The box body 1 is provided with a return assembly 45, which includes a return port 451. The return port 451 is opened on the side of the box body 1. A box door 452 is slidably connected to the outside of the box body 1. A push rod 453 is fixedly connected to the bottom of the support ring 23. An arc-shaped push block 454 is fixedly connected to the inside of the box door 452. A spring is fixedly connected to the bottom of the box door 452.
[0034] In use, the crushed stone particle screening device of the present invention first feeds the ore particles into the box 1 from the top. Baffles 25 divide the screen 21 into a screening area and a cleaning area, and the ore particles fall into the screening area between the baffles 25. Simultaneously, the motor 283 runs continuously, driving the drive column 281 to rotate continuously. The drive column 281 drives and vibrates the support cylinder 27 and the support base 24 through the arc-shaped protrusion 282. The support base 24 vibrates synchronously with the support ring 23 during vibration. The screen 21 inside the support ring 23 vibrates randomly due to the action of the vibrating spring 22, thus continuously screening the ore particles. When the screen 21 is blocked or ore particles larger than the screen 21 aperture accumulate, the speed at which the ore particles pass through the screen 21 continuously decreases, and ore particles of different sizes accumulate on the screen 21. The accumulated ore pushes the detection plate 311 upwards, and the detection plate 311 pushes the detection block 35 upwards via the positioning plate 313. The detection block 35 slides upwards along the rotating cylinder 33. When the detection block 35 moves to the top of the rotating cylinder 33, it pushes the rotating cylinder 33 upwards, which in turn drives the drive cylinder 322 upwards. This, in turn, pushes the drive block 321 towards the screen 21 via the connecting rod 323, forming a serrated drive structure. When the detection block 35 reaches the top, the magnet 36 attracts it to the metal seat 372, thus positioning the drive block 321. The screen 21 rotates along the drive block 321 as it vibrates up and down, thus switching the rotation of the screen 21. When the screen 21 rotates, the detection block 35 is rotated by the inner limiting frame 38. The detection block 35 and the drive plate 34 can drive the support plate 371 to rotate continuously via the metal seat 372. The rotation amplitude of the support plate 371 is limited by the return spring 373. Therefore, the support plate 371 can limit the rotation angle of the drive plate 34. At the same time, the top of the limiting frame 38 is offset from the metal seat 372. That is, after the support plate 371 rotates to the end, the limiting frame 38 can rotate and separate the drive plate 34 from the metal seat 372, so that the drive block 321 automatically returns to its original position after driving the screen 21 to the set angle. After the drive block 321 is reset, the inner side of the screen 21 loses the restriction of the drive block 321 and cannot rotate. It can only maintain up and down oscillation, thus continuing the screening operation. As the screen 21 rotates, the support ring 23 rotates synchronously via the vibrating spring 22, and the push rod 453 pushes open the box door 452, allowing the accumulated ore particles to be discharged from the return port 451 for further crushing and return to the feed port. During the screening process of the screen 21, the cleaning plate 41 continuously vibrates under the action of the spring 42, and the vibrating screen 21 can be cleaned by the cleaning head 44.
[0035] Example 4 like Figures 1-15As shown, based on Example 3, a method for screening crushed stone particles includes the following steps: S1. Screening of crushed ore: The crushed small ore particles are guided to the feed inlet of the screening equipment and screened through screen 21. S2. The angle of the screen 21 is adjusted. After the screen 21 is blocked, the detection component 31 detects the amount of accumulated ore. When the screen 21 is blocked, the screen 21 cannot effectively screen the ore particles. The ore particles continue to accumulate on the screen 21, thereby continuously pushing the detection plate 311 upward. When the ore quantity reaches the threshold, the switching component 32 adjusts the angle of the screen. The detection plate 311 pushes the detection block 35 upward through the positioning plate 313, and the detection block 35 slides upward along the rotating cylinder 33. When the detection block 35 moves to the top of the rotating cylinder 33, the detection block 35 pushes the rotating cylinder 33 upward, and the rotating cylinder 33 drives the drive cylinder 322 to move upward. Through the connecting rod 323, the drive block 321 is pushed towards the screen 21, forming a sawtooth-shaped drive structure. The drive block 321 drives the screen 21. The return port 451 is opened simultaneously, and the accumulated ore is discharged from the return port 451 into the box 1. When the screen 21 rotates, the screen 21 drives the support ring 23 to rotate synchronously through the vibration spring 22, and pushes the box door 452 open through the push rod 453. The accumulated ore particles are discharged from the return port 451 for further crushing and return to the feed port. S3. Processing of screened ore: The ore discharged from the return port 451 is returned to the crushing equipment for further crushing.
[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0037] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A crushed stone particle screening device, comprising a housing (1), wherein a feed inlet is provided at the top of the housing (1), characterized in that, Also includes: Vibrating screen mechanism (2), the vibrating screen mechanism (2) includes a screen (21) for vibrating screening of ore particles; The detection switching mechanism (3) is used to detect the blockage of the screen (21) and adjust the angle of the screen (21); Screen cleaning mechanism (4) is used to clean the clogged screen (21). The vibrating screen mechanism (2) includes a support base (24), which is slidably connected to the top of the box (1). Multiple baffles (25) are fixedly connected to the support base (24). The detection switching mechanism (3) includes a detection component (31), which is arranged between the baffles (25).
2. The crushed stone particle screening device according to claim 1, characterized in that: The box (1) is movably connected to the middle of the box. The top of the box (21) is fixedly connected to the oscillating spring (22). The outside of the box (21) is connected to the support ring (23). The oscillating spring (22) is fixedly connected to the inside of the support ring (23). The support ring (23) and the box (21) are rotatably connected to the bottom of the support base (24). The baffles (25) are equidistantly arranged. The bottom of the baffles (25) is slidably connected to the barrier net (26).
3. The crushed stone particle screening device according to claim 1, characterized in that: The support base (24) is fixedly connected to the middle of the support cylinder (27), and the support cylinder (27) is connected to the inside of the drive assembly (28). The drive assembly (28) includes a drive column (281) movably connected inside the support cylinder (27). The side of the drive column (281) and the support cylinder (27) are fixedly connected to the arc-shaped protrusion (282). The bottom of the housing (1) is fixedly connected to the motor (283), and the drive column (281) is fixedly connected to the end of the output shaft of the motor (283).
4. The crushed stone particle screening device according to claim 1, characterized in that: The detection component (31) includes a detection plate (311), which is slidably connected between baffles (25). The detection plate (311) has a horn-shaped structure. A buffer spring (312) is fixedly connected to the top edge of the detection plate (311), and a positioning plate (313) is fixedly connected to the side of the detection plate (311).
5. The crushed stone particle screening device according to claim 3, characterized in that: The detection switching mechanism (3) further includes a switching component (32), which includes a drive block (321). The drive block (321) has an arc-shaped structure and is rotatably connected to the support cylinder (27). A drive cylinder (322) is rotatably mounted on the support cylinder (27), and a connecting rod (323) is connected to the drive cylinder (322). The end of the connecting rod (323) is rotatably connected to the drive block (321).
6. The crushed stone particle screening device according to claim 5, characterized in that: The top of the drive cylinder (322) is rotatably connected to a rotating cylinder (33), the side of the rotating cylinder (33) is slidably connected to a drive plate (34), the side of the drive plate (34) is rotatably connected to a detection block (35), and the top of the detection block (35) is fixedly connected to a magnet (36).
7. The crushed stone particle screening device according to claim 1, characterized in that: The support base (24) is provided with a spring-loaded assembly (37). The spring-loaded assembly (37) includes a support plate (371) rotatably connected to the top of the support base (24). The support plate (371) has an arc-shaped structure. A metal seat (372) is slidably connected to the bottom of the support plate (371). A reset spring (373) is fixedly connected between the metal seat (372) and the support plate (371) and at one end of the support plate (371). A limit frame (38) is rotatably connected inside the support base (24). The bottom end of the limit frame (38) passes through the middle of the screen (21). The position of the limit frame (38) corresponds to that of the detection block (35).
8. The crushed stone particle screening device according to claim 1, characterized in that: The cleaning mechanism (4) includes a cleaning plate (41), which is slidably connected between baffles (25). A spring (42) is fixedly connected to the top of the cleaning plate (41). A limiting plate (43) is fixedly connected to one side of the cleaning plate (41). The end of the limiting plate (43) abuts against the top of the rotating cylinder (33). A cleaning head (44) is fixedly connected to the bottom of the cleaning plate (41).
9. The crushed stone particle screening device according to claim 2, characterized in that: The box body (1) is provided with a return assembly (45), the return assembly (45) includes a return port (451), the return port (451) is opened on the side of the box body (1), the box body (1) is slidably connected to a box door (452), the bottom end of the support ring (23) is fixedly connected to a push rod (453), the inner side of the box door (452) is fixedly connected to an arc-shaped push block (454), and the bottom end of the box door (452) is fixedly connected to a spring.
10. A method for screening crushed stone particles, used in the crushed stone particle screening device according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Screening of crushed ore: The crushed small ore particles are guided to the feed inlet of the screening equipment and screened through the screen (21). S2. The angle of the screen (21) is adjusted. After the screen (21) is blocked, the detection component (31) detects the amount of accumulated ore. When the amount of ore reaches the threshold, the switching component (32) adjusts the angle of the screen and opens the return port (451) at the same time. The accumulated ore is then discharged from the return port (451) into the box (1). S3. Processing of the screened ore: The ore discharged from the return port (451) is returned to the crushing equipment for further crushing.