Screening machine capable of recycling materials

Abstract

The invention relates to the technical field of vibrating screens, in particular to a material recyclable screening machine which comprises a base and a vibrating frame, a screening assembly is arranged on the vibrating frame and comprises a first screen, a second screen and a third screen, and the first screen, the second screen and the third screen are sequentially arranged downwards in the vertical direction. The first screen, the second screen and the third screen are all obliquely distributed, the diameter of a filter hole of the first screen is larger than that of a filter hole of the third screen, a guide plate is arranged on the vibrating frame and comprises a second rotating shaft, a first baffle and a second baffle, and a second driving mechanism is arranged on the vibrating frame. The second baffle is obliquely arranged towards the front end of the vibrating frame in the vertical downward direction, and after falling off from the first screen mesh to the second screen mesh, materials can slide towards the front end of the second screen mesh along the second baffle and fall off to the second screen mesh to be screened; the screening machine capable of recycling the materials has the effect that aggregate screening is more sufficient.

Description

Technical Field

[0001] This invention relates to the field of vibrating screen technology, and more specifically to a screening machine for recyclable materials. Background Technology

[0002] Concrete aggregates refer to granular materials that act as a skeleton or filler in concrete. Based on particle size, concrete aggregates can be divided into coarse aggregates and fine aggregates. Coarse aggregates mainly include pebbles and crushed stone, while fine aggregates mainly include natural sand and manufactured sand. As filler materials in concrete, aggregates can occupy the voids in the concrete and improve its density and strength.

[0003] Urban construction generates a large amount of waste concrete. After crushing, screening, and further processing, this waste concrete can be recycled into recyclable concrete aggregate, replacing some or all of the natural aggregate. While recycled concrete aggregate has slightly lower compressive strength and durability than natural concrete aggregate, its performance can be significantly improved by optimizing aggregate gradation and controlling aggregate quality. In the production and processing of recycled concrete aggregate, screening machines are typically used to separate stones and sand of different particle sizes as needed.

[0004] Chinese Patent No. CN220941710U discloses a recycled concrete aggregate screening device, including a screening box. Screening mechanisms are provided on the inner walls of the left and right sides of the screening box for multi-stage screening of concrete aggregate. An auxiliary mechanism is provided on the left side of the screening box to help improve aggregate screening efficiency. The screening mechanism includes three fixed plates fixed to the inner walls of the left and right sides of the screening box. Vibration springs are fixed to the upper surfaces of the fixed plates on both sides, and screen plates are fixed to the upper surfaces of the vibration springs on both sides. Connecting frames are fixed to the front and rear sides of the three screen plates. A support frame is fixed to the inner wall of the left side of the screening box. A drive motor is fixed to the upper surface of the support frame. A turntable is fixed to the outer side of the output shaft of the drive motor. Connecting rods are fixed to the front of the turntable and the connecting frame. Swing arms are rotatably connected to the outer surfaces of the two connecting rods.

[0005] When in use, start the drive motor, drive the turntable to rotate via the motor output shaft, drive the swing arm to rotate in an elliptical path via the connecting rod, thereby causing the connecting frame to swing up and down. The connecting frame is fixed to the three screen plates so that when the connecting frame swings, it can simultaneously drive the three screen plates to vibrate and screen. Finally, the screened micro-particle aggregate will fall and be sent out by the feeding conveyor belt.

[0006] In the above technology, the aggregate is screened as it moves from the first end to the last end of the screen plate. The aggregate near the end of the upper screen plate will fall to the position near the end of the lower screen plate and be directly conveyed out along the lower screen plate. This part of the aggregate is discharged from the screening device without being fully screened, resulting in insufficient screening of the aggregate. Summary of the Invention

[0007] This invention provides a material recycling screening machine, which aims to solve the technical problem in related technologies where, during the screening process of aggregates moving from the first end to the last end of the screen plate, the aggregates near the end of the upper screen plate fall to the position near the end of the lower screen plate and are directly conveyed out along the lower screen plate. This part of the aggregates is discharged from the screening device without being fully screened, resulting in insufficient screening of the aggregates.

[0008] This invention discloses a material recycling screening machine, comprising a base and a vibrating frame mounted on the base. A screening assembly is mounted on the vibrating frame, comprising a first screen, a second screen, and a third screen. The first, second, and third screens are arranged vertically downwards in sequence, and are all inclined. The filter aperture diameter of the first screen is larger than that of the third screen. A guide plate is mounted on the vibrating frame, comprising a second rotating shaft rotatably coupled to the vibrating frame and a guide plate mounted on... The first baffle and the second baffle on the rotating shaft 2 are provided. The vibrating frame is equipped with a second driving mechanism for rotating the rotating shaft 2. In the initial state, the second baffle is inclined vertically downward towards the front end of the vibrating frame. After the material falls from the screen 1 to the screen 2, it will slide along the second baffle towards the front end of the screen 2 and fall onto the screen 2 for screening. The second driving mechanism drives the rotating shaft 2 and the second baffle to rotate. The second baffle abuts against the rotating shaft 2 on the adjacent guide plate to form a storage chamber for storing materials.

[0009] Preferably, the second driving mechanism includes a second gear mounted on a second rotating shaft and a rotating assembly disposed on a vibration frame for driving the second gear to rotate.

[0010] Preferably, the rotating assembly includes a second driving component disposed on the vibration frame and a second driving rod slidably fitted to the vibration frame. The output end of the second driving component is connected to a second gear, and the second driving rod meshes with the second gear.

[0011] Beneficial effects: By setting up the second drive rod, starting the second drive component can drive the second gear to rotate, which in turn drives the second drive rod to slide. When the second drive rod slides, it can drive multiple second gears to rotate simultaneously, thus achieving rotation adjustment of multiple second gears.

[0012] Preferably, the second screen includes multiple assemblies, the assembly including a rotating shaft rotatably coupled to the vibrating frame, a screen plate 1 and a screen plate 2 disposed on the rotating shaft 1.

[0013] Preferably, a rotating frame is rotatably fitted on the first rotating shaft, the second sieve plate is slidably fitted on the rotating frame, and an adjustment component is provided on the second sieve plate for adjusting the position of the second sieve plate.

[0014] Preferably, the adjusting component includes a connecting block and an elastic element two disposed on the connecting block. The connecting block is rotatably fitted to a sieve plate one. A mating groove is provided on the bottom surface of the sieve plate two. The connecting block is slidably fitted in the mating groove. One end of the elastic element two is connected to the connecting block, and the other end is connected to the sieve plate two.

[0015] Beneficial effects: With the setting of connecting block and elastic element 2, screen plate 1 rotates relative to connecting block, connecting block slides along mating groove and moves from one end of mating groove to the other end, elastic element 2 is always in a compressed state and pushes screen plate 2 to fit with rotating frame, preventing gaps from forming between screen plate 2 and rotating frame. When connecting block moves to the other end of mating groove, rotating shaft 1 stops rotating. At this time, a wave-like structure is formed between multiple components.

[0016] Preferably, the vibration frame is provided with a drive mechanism for driving the rotating shaft to rotate. The drive mechanism includes a gear mounted on the rotating shaft and a drive assembly mounted on the vibration frame for driving the gear to rotate.

[0017] Preferably, the drive assembly includes a drive component 1 disposed on the vibration frame and a drive rod 1 slidably fitted on the vibration frame, wherein the output shaft of the drive component 1 is connected to a gear 1, and the drive rod 1 meshes with the gear 1.

[0018] Beneficial effects: By setting up the drive rod, starting the drive component can drive a gear to rotate, which in turn drives the drive rod to slide. When the drive rod slides, it can drive multiple gears to rotate simultaneously, thus achieving rotation adjustment of multiple gears.

[0019] Preferably, a scraper for scraping material on the screen is slidably fitted on the first baffle, and an elastic element for pushing the scraper to slide away from the first baffle is provided between the scraper and the first baffle.

[0020] Preferably, the base is provided with a collection hopper.

[0021] The beneficial effects of this invention are as follows: 1. In this invention, through the arrangement of the guide plate and the second driving mechanism, in the initial state, the second baffle is inclined vertically downward towards the front end of the vibrating frame. After the material falls from screen one to screen two, it slides along the second baffle and towards the front end of screen two, falling onto screen two for screening. During material screening, it can prevent the material from falling near the end of screen two and being directly conveyed out along screen two, thus making the screening of the material more thorough. At the same time, the second baffle can also act as a buffer to prevent the material from directly hitting screen two and affecting the service life of screen two. Meanwhile, the second driving mechanism drives the second rotating shaft and the second baffle to rotate. The second baffle abuts against the second rotating shaft on the adjacent guide plate to form a storage chamber for storing materials. When there is a lot of material on screen one, the material is stored in the storage chamber to prevent a lot of material from entering screen two and causing insufficient screening of the material on screen two.

[0022] 2. In this invention, by setting up a rotating component, the rotating component can drive the second gear to rotate, and the second gear can drive the second rotating shaft to rotate, thereby realizing convenient adjustment of the position of the guide plate.

[0023] 3. In this invention, by adjusting the components and the rotating frame, when the rotating shaft rotates, it can drive the screen plate to rotate, drive the rotating frame to rotate, and make the screen plate 2 adjust its position within the rotating frame. The screen plate 2 rotates relative to the screen plate 1, so that a wave-like structure is formed between the screen plate 1 and the screen plate 2, which can increase the screening contact area of ​​the material and slow down the flow rate of the material, so that the screening of the material is more thorough.

[0024] 4. In this invention, by setting up the drive mechanism, when the drive component drives the gear to rotate, the gear drives the shaft to rotate, which in turn drives the screen plate and the screen plate to rotate, thereby realizing convenient adjustment of the screen plate and the screen plate.

[0025] 5. In this invention, by setting the scraper, when the first baffle rotates to a certain position on the screen, the elastic element can push the scraper to always abut against the bottom of the screen, and scrape off the material at the bottom of the screen by the scraper, which can avoid the phenomenon of material clogging the screen and improve the screening effect of the material. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 This is a partial cross-sectional view illustrating the connection between the guide plate and the vibration frame in this invention.

[0028] Figure 3 This is a schematic diagram illustrating another state of sieve plate one and sieve plate two according to the present invention.

[0029] Figure 4 This is a schematic diagram illustrating the connection relationship between the drive rod and the gear in this invention.

[0030] Figure 5 yes Figure 4 A magnified view of a portion of point A in the middle.

[0031] Figure 6 This is a schematic diagram of the structure of the assembly shown in this invention.

[0032] Figure 7 This is a partial cross-sectional view of the present invention showing the connection relationship between the first baffle and the scraper.

[0033] Figure 8 This is a partial cross-sectional view of the collection bucket shown in this invention.

[0034] Figure label: 1. Base; 2. Vibrating frame; 3. Vibrating motor; 4. Screen one; 5. Assembly; 51. Rotating shaft one; 52. Screen plate one; 53. Rotating frame; 54. Screen plate two; 6. Screen three; 7. Guide plate; 71. Rotating shaft two; 72. First baffle; 73. Second baffle; 81. Driving component one; 82. Driving rod one; 83. Gear one; 91. Driving component two; 92. Driving rod two; 93. Gear two; 10. Scraper; 11. Connecting block; 12. Elastic component two; 13. Collection hopper. Detailed Implementation

[0035] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0036] like Figures 1 to 8As shown, a material recycling screening machine of the present invention includes a base 1, a vibrating frame 2 disposed on the base 1, and a vibrating motor 3 fixedly disposed on the base 1 for driving the vibrating frame 2. The base 1 is supported on the ground, and a buffer spring is provided between the vibrating frame 2 and the base 1. A collection hopper 13 is fixedly disposed on the base 1. The collection hopper 13 has a funnel structure and a discharge port at the bottom end of the collection hopper 13. A screening assembly is disposed on the vibrating frame 2, and the screening assembly includes a first screen 4, a second screen, and a third screen. Screen 6, screen 1, screen 2, and screen 3 are arranged vertically downwards in sequence, and all three screens are inclined downwards along the rear end of the vibrating frame 2. The filter hole diameter of screen 1 is larger than that of screen 2, and the filter hole diameter of screen 2 is larger than that of screen 3. Screen 3 is parallel to screen 1. The rear ends of screen 1, screen 2, and screen 3 are equipped with corresponding conveyor belts (not shown in the figure) for conveying the screened material. When material screening is required, the vibrating motor 3 is started first, and the material is added to screen 4 from the front end of the vibrating frame 2. The material slides down screen 4 and is screened through screen 4. Some material slides down screen 4 and falls into the conveyor belt for conveying. Some material falls onto screen 2 for secondary screening. Some material slides down screen 2 and falls into the conveyor belt for conveying. Some material falls onto screen 3 6 for tertiary screening. Some material slides down screen 3 6 and falls into the collection hopper 13 and is finally discharged from the discharge port, completing the material screening operation.

[0037] like Figure 2 , Figure 3 and Figure 7 As shown, a guide plate 7 is provided on the vibrating frame 2, positioned between screen 4 and screen 2. The guide plate 7 is used to guide the material passing through screen 4. Multiple guide plates 7 are provided, spaced apart along the length of the vibrating frame 2. The guide plate 7 includes a rotating shaft 71 rotatably fitted on the vibrating frame 2, and a first baffle 72 and a second baffle 73 fixedly mounted on the rotating shaft 71. Both the first baffle 72 and the second baffle 73 are rectangular structures. The rotating shaft 71 is horizontally positioned, and the second baffle 73 is fixedly mounted on the rotating shaft 71. In the initial state, the first baffle 72 is vertically positioned, and the second baffle 73 is inclined downwards towards the front end of the vibrating frame 2 (its state is as shown). Figure 2As shown, after the material falls from screen 4 to screen 2, it slides along the second baffle 73 towards the front end of screen 2 and falls from the second baffle 73 to screen 2 for screening. A scraper 10 for scraping the material on screen 4 is slidably fitted on the first baffle 72. The scraper 10 is sleeved on the first baffle 72, and an inclined surface is provided at the end of the scraper 10 near screen 4. An elastic element is provided between the scraper 10 and the first baffle 72 to push the scraper 10 to slide away from the first baffle 72. The elastic element is directly made of spring. One end of the elastic element is fixedly connected to the scraper 10, and the other end is fixedly connected to the first baffle 72. The elastic element is always in a compressed state and applies a pushing force to the scraper 10 so that the top of the scraper 10 is always in contact with the bottom surface of screen 4.

[0038] like Figure 4 , Figure 5 and Figure 7 As shown, the vibrating frame 2 is equipped with a second drive mechanism for rotating the second shaft 71. When there is a large amount of aggregate on the first screen 4, the second drive mechanism drives the second shaft 71 to rotate. The second shaft 71 drives the first baffle 72 and the second baffle 73 to rotate. When the second baffle 73 abuts against the second shaft 71 on the adjacent guide plate 7, a storage chamber for storing materials is formed (its state is as shown). Figure 3 (As shown); At the same time, during the rotation of the second rotating shaft 71, the second rotating shaft 71 drives the first baffle 72 to rotate, the first baffle 72 drives the scraper 10 to rotate, and the top of the scraper 10 moves along the screen 4. The scraper 10 can move large particles stuck in the screen 4 to prevent the screen 4 from clogging.

[0039] Among them, such as Figure 4 , Figure 5 and Figure 7 As shown, the second drive mechanism includes a gear 93 fixedly mounted on a rotating shaft 71 and a rotating assembly mounted on the vibration frame 2 for driving the gear 93 to rotate. The rotating assembly includes a drive member 91 fixedly mounted on the vibration frame 2 and a drive rod 92 slidably fitted to the vibration frame 2. The drive member 91 is directly powered by an electric motor, which is either a self-locking motor or has a worm gear reducer mounted on it. When the drive member 91 is not working, its output shaft is locked and does not rotate. At this time, the rotating shaft 71 cannot rotate, and the drive member... The housing of drive component 291 is fixedly connected to the vibration frame 2. The output end of drive component 291 is fixedly connected to gear 293. Drive rod 292 is provided with multiple teeth, and drive rod 292 meshes with multiple gears 293. When drive component 291 is started, gear 293 is driven to rotate, which drives drive rod 292 to slide along the length of drive rod 292. When drive rod 292 slides, it drives multiple gears 293 to rotate simultaneously. Gears 293 drive shaft 271 to rotate, and shaft 271 drives first baffle 72 and second baffle 73 to rotate.

[0040] like Figure 4 , Figure 5 and Figure 6 As shown, the second screen includes multiple assemblies 5, which are arranged sequentially along the length of the vibrating frame 2. Each assembly 5 includes a rotating shaft 51 rotatably fitted onto the vibrating frame 2, a screen plate 52 and a screen plate 54 fixedly mounted on the rotating shaft 51. Multiple rotating shafts 51 are provided, spaced apart. Both the screen plate 52 and the screen plate 54 are rectangular plates with filter holes. Initially, the screen plate 52 and the screen plate 54 are parallel, and adjacent assemblies 5 have their screen plates 52 and 54 stacked together. A rotating frame 53, which has a U-shaped structure, is rotatably fitted onto the rotating shaft 51. The second sieve plate 54 is slidably fitted to the rotating frame 53 along the radial direction of the first rotating shaft 51. The second sieve plate 54 is provided with an adjustment component for adjusting the position of the second sieve plate 54. The adjustment component includes a connecting block 11 and an elastic element 12 provided on the connecting block 11. The bottom end of the connecting block 11 is rotatably fitted to the first sieve plate 52. The bottom surface of the second sieve plate 54 is provided with a mating groove. The top end of the connecting block 11 is slidably fitted into the mating groove. The elastic element 12 is directly a spring. In the initial state, the elastic element 12 is in a compressed state. The elastic element 12 is arranged radially along the first rotating shaft 51. One end of the elastic element 12 is fixedly connected to the connecting block 11, and the other end is fixedly connected to the second sieve plate 54.

[0041] like Figure 4 , Figure 5 and Figure 6 As shown, the vibrating frame 2 is provided with a drive mechanism for driving the rotating shaft 51 to rotate. The drive mechanism includes a gear 83 fixedly installed on the rotating shaft 51 and a drive assembly installed on the vibrating frame 2 for driving the gear 83 to rotate. When the drive assembly is working, it can drive the gear 83 to rotate, the gear 83 drives the rotating shaft 51 to rotate, and then drives the screen plate 52 to rotate.

[0042] Among them, such as Figure 4 , Figure 5 and Figure 6As shown, the drive assembly includes a drive component 81 fixedly mounted on the vibrating frame 2 and a drive rod 82 slidably fitted on the vibrating frame 2. The drive component 81 is directly powered by an electric motor. The housing of the drive component 81 is fixedly mounted on the vibrating frame 2. The output shaft of the drive component 81 is fixedly connected to a gear 83. The drive rod 82 has multiple teeth, and the drive rod 82 meshes with multiple gears 83. When the drive component 81 is started, the gears 83 rotate, causing the drive rod 82 to slide along its length. When the drive rod 82 slides, it causes multiple gears 83 to rotate simultaneously. The gears 83 drive the rotating shaft 51 to rotate, the rotating shaft 51 drives the screen plate 52 to rotate, and the screen plate 52 drives the screen plate 54 to rotate. When the screen plate 52 and the screen plate 54 are parallel to the screen mesh 4 (their state is as shown in the image), the drive component 81 rotates. Figure 6 As shown), it can screen materials; when screen plate 1 52 pushes the rotating frame 53 and screen plate 2 54 in the adjacent assembly 5 to rotate upward, screen plate 1 52 rotates relative to connecting block 11, connecting block 11 slides along the mating groove and moves from one end of the mating groove to the other end, elastic element 2 12 is always in a compressed state, and pushes screen plate 2 54 to fit with rotating frame 53 to prevent gaps from forming between screen plate 2 54 and rotating frame 53. When connecting block 11 moves to the other end of the mating groove, rotating shaft 1 51 stops rotating. At this time, a wave-like structure is formed between multiple assemblies 5 (its state is as shown). Figure 3 As shown in the figure, at this time, the elastic element 212 is in its natural state.

[0043] The implementation principle of the material recycling screening machine of the present invention is as follows: When the material needs to be screened, the vibration motor 3 is started first. The vibration motor 3 drives the vibration frame 2 to vibrate. The material is added to the screen 4 from the front end of the vibration frame 2. The material slides down the screen 4 and is screened through the screen 4. Some of the material falls into the conveyor belt after sliding down the screen 4 and is transported out. Some of the material slides along the second baffle 73 towards the front end of the screen 2 after passing through the screen 4. The second baffle 73 can buffer the material. After passing through the second baffle 73, the material falls to the screen 2 for screening. When there is a large amount of aggregate on screen 4, drive component 2 91 is activated, driving gear 2 93 to rotate. This causes drive rod 2 92 to slide along its length. As drive rod 2 92 slides, it drives multiple gears 2 93 to rotate simultaneously. Gears 2 93 drive shaft 2 71 to rotate, which in turn drives the first baffle 72 and the second baffle 73 to rotate. When the second baffle 73 abuts against the shaft 2 71 on the adjacent guide plate 7, a storage chamber for storing materials is formed (its state is as follows). Figure 3As shown), the material falling through the screen 4 can enter the storage chamber for storage; at the same time, during the rotation of the rotating shaft 71, the rotating shaft 71 drives the first baffle 72 to rotate, the first baffle 72 drives the scraper 10 to rotate, the top of the scraper 10 moves along the screen 4, and the scraper 10 can move the large particles stuck in the screen 4 to prevent the screen 4 from clogging. Simultaneously, the drive component 81 is activated, causing gear 83 to rotate. This causes drive rod 82 to slide along its length. As drive rod 82 slides, multiple gears 83 rotate simultaneously. Gears 83 drive shaft 51 to rotate, which in turn drives screen plate 52 to rotate. Screen plate 52 pushes the rotating frame 53 and screen plate 54 in adjacent assembly 5 to rotate clockwise upwards. During this process, screen plate 52 rotates relative to connecting block 11. Connecting block 11 slides along the mating groove and moves from one end of the groove to the other. Elastic element 12 remains compressed and pushes screen plate 54 to fit against rotating frame 53, preventing gaps between them. When connecting block 11 moves to the other end of the mating groove, shaft 51 stops rotating. At this point, a wave-like structure is formed between the multiple assemblies 5 (its state is as follows). Figure 3 As shown, when a certain amount of material is stored in the storage chamber, drive component 2 91 is activated. Drive component 2 91 drives shaft 2 71 to rotate in the opposite direction, causing the storage chamber to open. The material in the storage chamber falls onto the wavy screen 2. Due to the obstruction of screen 2, the material on screen 2 can only sway at the trough of screen 2 until the aggregate on screen 2 is fully screened. Then drive component 1 81 is activated, driving gear 1 83 to rotate. This drives drive rod 1 82 to slide along the length of drive rod 1 82. When drive rod 1 82 slides, it drives multiple gears 1 83 to rotate simultaneously. Gears 1 83 drive shaft 1 51 to rotate. Shaft 1 51 drives screen plate 1 52 to rotate. Screen plate 1 52 drives screen plate 2 54 to rotate. When screen plate 1 52 and screen plate 2 54 rotate to a state parallel to screen 1 4, the material on screen 2 can move backward along screen 2 to the rear end of screen 2 and fall onto the corresponding conveyor belt. After the material in the storage chamber is discharged, the second drive component 91 drives the second shaft 71 to rotate again. The second shaft 71 drives the first baffle 72 and the second baffle 73 to rotate, so that the guide plate 7 forms a storage chamber again. During this process, the second screen can screen the remaining material after the first screen 4 in batches. When the aggregate in a batch is completely screened, the second screen will be discharged. Then the storage chamber will be opened again, and the second screen will screen the next batch of aggregate. After some material slides down screen two, it falls into the conveyor belt and is transported out. After passing through screen two, some material falls onto screen three 6 for three screenings. After passing through screen three 6, some material falls into the collection hopper 13 and is finally discharged from the discharge port, completing the screening operation.

[0044] When the material contains only large particles, small particles, and sand, the drive unit 81 is activated. The drive unit 81 drives the rotating shaft 51 to rotate, which in turn drives the screen plate 52 to rotate. The screen plate 52 then drives the connecting block 11 to move. When the screen plate 52 moves the connecting block 11 to the other end of the mating groove, the rotating shaft 51 continues to rotate, causing the screen plate 52 to move relative to the rotating frame 53 via the connecting block 11. This creates a gap between the screen plate 54 and the rotating frame 53. The small particles and sand that have been screened by the screen 4 fall onto the screen 2 and then directly onto the screen 3 6 through the gap between the screen plate 2 54 and the rotating frame 53. After the screen 3 6 screens the small particles, the remaining sand passes through the screen 3 6 and is discharged from the sand outlet, thus achieving rapid screening of the material.

[0045] With the setup of the guide plate 7 and the second drive mechanism, in the initial state, the second baffle 73 is inclined vertically downward towards the front end of the vibrating frame 2. After the material falls from the first screen 4 to the second screen, it slides along the second baffle 73 and towards the front end of the second screen, falling onto the second screen for screening. During screening, this prevents the material from falling near the end of the second screen and being directly conveyed out along the second screen, thus making the screening of the material more thorough. At the same time, the second baffle 73 also acts as a buffer, preventing the material from directly hitting the second screen and affecting its service life. Meanwhile, the second drive mechanism drives the second shaft 71 and the second baffle 73 to rotate. The second baffle 73 abuts against the second shaft 71 on the adjacent guide plate 7, forming a storage chamber for storing materials. When there is a lot of material on the first screen 4, the material is stored in the storage chamber, preventing too much material from entering the second screen and causing insufficient screening of the material on the second screen.

[0046] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A material recycling screening machine, comprising a base (1) and a vibrating frame (2) disposed on the base (1), characterized in that, The vibrating frame (2) is equipped with a screening assembly, which includes a screen one (4), a screen two, and a screen three (6). The screen one (4), screen two, and screen three (6) are arranged vertically downwards in sequence, and the screen one (4), screen two, and screen three (6) are all inclined. The filter hole diameter of the screen one (4) is larger than that of the screen three (6). The vibrating frame (2) is equipped with a guide plate (7), which includes a rotating shaft two (71) rotatably fitted on the vibrating frame (2), a first baffle (72) and a second baffle set on the rotating shaft two (71). The vibrating frame (2) is provided with a drive mechanism 2 for driving the rotating shaft 2 (71) to rotate. In the initial state, the second baffle (73) is inclined to the front end of the vibrating frame (2) vertically downward. After the material falls from the screen 1 (4) to the screen 2, it will slide along the second baffle (73) to the front end of the screen 2 and fall to the screen 2 for screening. The drive mechanism 2 drives the rotating shaft 2 (71) and the second baffle (73) to rotate. The second baffle (73) abuts against the rotating shaft 2 (71) on the adjacent guide plate (7) to form a storage chamber for storing materials.

2. The material recycling screening machine according to claim 1, characterized in that, The second drive mechanism includes a second gear (93) mounted on a second rotating shaft (71) and a rotating component mounted on a vibrating frame (2) for driving the second gear (93) to rotate.

3. The material recycling screening machine according to claim 2, characterized in that, The rotating assembly includes a second driving component (91) disposed on the vibration frame (2) and a second driving rod (92) slidably fitted on the vibration frame (2). The output end of the second driving component (91) is connected to a second gear (93), and the second driving rod (92) meshes with the second gear (93).

4. The material recycling screening machine according to claim 1, characterized in that, The second screen includes multiple assemblies (5), the assembly (5) including a rotating shaft (51) rotatably coupled to the vibrating frame (2), a screen plate (52) and a screen plate (54) disposed on the rotating shaft (51).

5. A material recycling screening machine according to claim 4, characterized in that, The rotating shaft (51) is rotatably fitted with a rotating frame (53), and the sieve plate (54) is slidably fitted with the rotating frame (53). The sieve plate (54) is provided with an adjustment component for adjusting the position of the sieve plate (54).

6. A material recycling screening machine according to claim 5, characterized in that, The adjustment assembly includes a connecting block (11) and an elastic element two (12) disposed on the connecting block (11). The connecting block (11) is rotatably fitted to the sieve plate one (52). The bottom surface of the sieve plate two (54) is provided with a mating groove. The connecting block (11) is slidably fitted in the mating groove. One end of the elastic element two (12) is connected to the connecting block (11), and the other end is connected to the sieve plate two (54).

7. A material recycling screening machine according to claim 4, characterized in that, The vibration frame (2) is provided with a drive mechanism for driving the rotating shaft (51) to rotate. The drive mechanism includes a gear (83) mounted on the rotating shaft (51) and a drive assembly mounted on the vibration frame (2) for driving the gear (83) to rotate.

8. A material recycling screening machine according to claim 7, characterized in that, The drive assembly includes a drive component (81) disposed on the vibration frame (2) and a drive rod (82) slidably fitted on the vibration frame (2). The output shaft of the drive component (81) is connected to a gear (83), and the drive rod (82) meshes with the gear (83).

9. A material recycling screening machine according to claim 1, characterized in that, The first baffle (72) is slidably fitted with a scraper (10) for scraping the material on the screen (4). An elastic element is provided between the scraper (10) and the first baffle (72) for pushing the scraper (10) to slide away from the first baffle (72).

10. A material recycling screening machine according to claim 1, characterized in that, A collection hopper (13) is provided on the base (1).

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