A three-layer screen ratio gradient screening device
By designing a gradient screening device with a three-layer screen ratio and using a drive component to link the screening components and scraper, the problem of easy breakage of coarse particles in the existing technology is solved, achieving efficient and accurate particle size classification and automated screening, and simplifying the equipment structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- INNER MONGOLIA DAZHUN NEW TECHNOLOGY DEVELOPMENT CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-07-14
AI Technical Summary
In the production of soil conditioners, existing gradient screening equipment often uses manual stirring or built-in agitation to increase screening speed. This results in the easy breakage of brittle coarse particles, leading to insufficient coarse particle yield and deviation from the preset gradient ratio requirements.
A gradient screening device with a three-layer screen ratio was designed. By setting multiple movable screening components, and driving one of the screening components to move, the other screening components are linked. Combined with the inclined screening plate and scraper, synchronous screening and self-cleaning are achieved, avoiding external force breakage and simplifying the drive structure.
It improves screening efficiency, avoids crushing of coarse particles, ensures that materials can move effectively on screens at all levels, achieves accurate particle size classification and automated control of the equipment, and reduces equipment complexity and cost.
Smart Images
Figure CN224486774U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of soil conditioner technology, specifically to a gradient sieving device with a three-layer screen ratio. Background Technology
[0002] In the field of soil improvement and ecological restoration, soil conditioners, as important functional materials, are widely used to improve soil structure, regulate soil pH, enhance soil water and fertilizer retention capacity, promote crop growth, and repair degraded or polluted soils. Soil conditioners are typically formulated from a variety of functional raw materials. Common components include mineral-based materials (such as limestone powder, diatomaceous earth, zeolite, and bentonite), organic matter (such as humic acid, compost, and biochar), chemical regulators (such as polyacrylamide and ferrous sulfate), and microbial preparations. The particle size distribution of these raw materials has a decisive impact on the performance of the final product: excessively large particle sizes may lead to slow dissolution or reaction rates, affecting immediate effects; excessively small particle sizes can easily cause dust pollution, making application difficult, and may result in rapid loss of nutrients or active ingredients due to excessive surface area. To obtain stable and effective soil conditioner products, precise particle size classification, i.e., sieving, is usually required for different raw materials or mixtures. By screening, materials can be divided into different grades according to particle size, ensuring that the final product has a standard, uniform particle composition (such as an effective particle size controlled within the range of 0.1mm-5mm). Multi-layer screening equipment, especially a three-layer screen structure, separates powdery materials into four grades: coarse particles (>0.3mm), medium particles (0.15-0.3mm), fine particles (<0.15mm), and micro powder (<0.075mm), meeting the needs of refined proportioning and quality control.
[0003] However, when existing gradient screening equipment is used in the production of soil conditioners, manual stirring or built-in agitation is often used to increase the screening speed. Although these methods can accelerate the movement of materials, the applied external force can easily cause the brittle coarse particles to break, resulting in insufficient coarse particle yield and deviation from the preset gradient ratio requirements.
[0004] Therefore, existing technologies need further development. Utility Model Content
[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a gradient screening device with a three-layer screen ratio. This addresses the technical problem that when gradient screening devices are applied to the production of soil conditioners, manual stirring or built-in agitation is often used to increase the screening speed. Although these methods can accelerate the movement of materials, the applied external force can easily cause the brittle coarse particles to break, resulting in insufficient coarse particle yield and deviation from the preset gradient ratio requirements.
[0006] To achieve the above technical objectives, the present invention adopts the following technical solution: a gradient screening device with a three-layer screen ratio is provided, comprising: a screening component having at least two screening sections with different screening apertures, each screening section being movably arranged and interconnected with each screening section; and a driving component being drivenly connected to one of the screening sections, so as to drive the other screening sections to move by driving the movement of one of the screening sections.
[0007] Furthermore, the screening assembly includes: a first screening plate, which is inclined; a second screening plate, which is connected to the first screening plate and is also inclined; and a third screening plate, which is connected to the second screening plate and is also inclined.
[0008] Furthermore, the drive assembly includes: a transmission member, the output end of which is connected to one of the first screening plate, the second screening plate, and the third screening plate; and a first drive member, which is connected to the input end of the transmission member to drive the transmission member to move, thereby driving one of the first screening plate, the second screening plate, and the third screening plate to move.
[0009] Furthermore, the transmission component includes: a connecting rod, one end of which is rotatably connected to one of the first screening plate, the second screening plate, and the third screening plate; a drive wheel, the other end of which is eccentrically connected to the drive wheel, and the connecting rod is rotatably disposed relative to the drive wheel; the drive wheel is drivenly connected to a first driving member to drive the drive wheel to rotate through the first driving member, thereby driving the connecting rod to move one of the first screening plate, the second screening plate, and the third screening plate.
[0010] Furthermore, the gradient screening device also includes: two vertical plates, which are spaced apart along the length of the first screening plate; the first screening plate, the second screening plate, and the third screening plate are all disposed between the two vertical plates and are slidably disposed relative to the two vertical plates.
[0011] Furthermore, the first drive component is mounted on one of the uprights.
[0012] Furthermore, at least a portion of the second screening plate is located below the first screening plate; at least a portion of the third screening plate is located below the second screening plate.
[0013] Furthermore, the gradient screening device with a three-layer screen ratio also includes: a first scraper and a second scraper, the first scraper and the second scraper being spaced apart along the width direction of the first screening plate, the first scraper and the second scraper being connected to two vertical plates respectively; the second screening plate is movably threaded through the first scraper, and the second screening plate is slidably arranged relative to the second scraper; the third screening plate is movably threaded through the second scraper.
[0014] Furthermore, the gradient screening equipment also includes a material collection assembly, which includes: a first material collection bin, which is movably arranged along the length of the first screening plate and located below the first screening plate; a second material collection bin, which is movably arranged along the length of the first screening plate and located below the second screening plate; and a third material collection bin, which is movably arranged along the length of the first screening plate and located below the third screening plate. The first, second, and third material collection bins are spaced apart along the width of the first screening plate.
[0015] Furthermore, the gradient screening equipment also includes a material guide, which is provided with a material guide space. The material guide is located on one side of the two vertical plates near the third screening plate and at the bottom of the third screening plate, so as to guide the material screened when the third screening plate moves to the maximum stroke away from the second screening plate into the third collection bin.
[0016] Furthermore, the gradient screening device also includes: a first baffle plate, which is rotatably disposed between two vertical plates and located above the first screening plate, and is used to prevent material on the first screening plate from flowing into the second screening plate; a second baffle plate, which is rotatably disposed between two vertical plates and located above the second screening plate, and is used to prevent material on the second screening plate from flowing into the third screening plate; and a third baffle plate, which is rotatably disposed between two vertical plates and located above the third screening plate, and is used to prevent material on the third screening plate from flowing out.
[0017] Beneficial effects:
[0018] 1. By setting the screening component to include multiple interconnected and movable screening sections, and driving one screening section to move in conjunction with the other screening sections by the drive component, the effect of synchronous screening by multiple screening sections working together is achieved. This ensures that the material can obtain effective relative movement on each level of screen, improves screening efficiency, and avoids the problem of brittle coarse particles being broken due to external forces such as manual stirring or built-in agitation acting directly on the material.
[0019] 2. By setting the drive assembly to include a first drive component and a transmission component, and transmitting power to one of the screening plates through the transmission component, the effect of driving the entire screening assembly with a single power source is achieved, which simplifies the drive structure and reduces the complexity and cost of the equipment.
[0020] 3. By setting a first scraper and a second scraper, and having them slide in cooperation with the second and third screening plates respectively, the scraper can scrape off the material stuck on the edge of the screen hole or adhering to the surface of the screen plate during the reciprocating motion of the screening plate. It has a self-cleaning function, effectively prevents screen hole blockage, maintains screening efficiency, and can also prevent unscreened material or screened material from mixing with other screened materials. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of the gradient screening device with a three-layer screen ratio used in this embodiment of the utility model;
[0022] Figure 2 This is a first-view schematic diagram of a gradient screening device with a three-layer screen ratio used in an embodiment of this utility model;
[0023] Figure 3 This is a schematic diagram of the internal structure of the gradient screening device with a three-layer screen ratio used in this embodiment of the utility model.
[0024] The above figures include the following reference numerals:
[0025] 1. Screening assembly; 2. Drive assembly; 3. First screening plate; 4. Second screening plate; 5. Third screening plate; 6. Stepped distribution; 7. Transmission component; 8. First drive component; 9. Connecting rod; 10. Drive wheel; 11. Vertical plate; 12. Limiting block; 13. Limiting groove; 14. First scraper; 15. Second scraper; 16. Collection assembly; 17. First collection bin; 18. Second collection bin; 19. Third collection bin; 20. Guide component; 21. Fourth collection bin; 22. First baffle plate; 23. Second baffle plate. Detailed Implementation
[0026] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.
[0027] According to an embodiment of this utility model, a gradient screening device with a three-layer screen ratio is provided. Please refer to [link / reference]. Figures 1 to 3The device includes: a screening component 1 having at least two screening sections with different screening apertures, each screening section being movably arranged and interconnected with each screening section; and a drive component 2 being drivenly connected to one of the screening sections so as to drive the other screening sections to move by driving the one screening section to move.
[0028] By adopting the above technical solution, the screening component 1 is set to include multiple interconnected and movable screening parts, and the drive component 2 drives one of the screening parts to move, thereby linking the other screening parts. This achieves the effect of synchronous screening by the coordinated movement of multiple screening parts, ensuring that the material can obtain effective relative movement on each level of screen, improving screening efficiency, and avoiding the problem of brittle coarse particle breakage caused by external forces such as manual stirring or built-in stirring acting directly on the material.
[0029] Please refer to Figure 2 The screening assembly 1 includes: a first screening plate 3, which is inclined; a second screening plate 4, which is connected to the first screening plate 3 and is inclined; and a third screening plate 5, which is connected to the second screening plate 4 and is inclined.
[0030] The first screening plate 3, the second screening plate 4, and the third screening plate 5 form various screening sections. Furthermore, the distribution of the first screening plate 3, the second screening plate 4, and the third screening plate 5 is stepped.
[0031] By adopting the above technical solution, the screening section is specifically defined as the first screening plate 3, the second screening plate 4 and the third screening plate 5, and they are arranged in a stepped inclined distribution, which achieves the effect of natural material conveying by gravity. After the material completes the screening of the previous stage, it can smoothly slide down to the next stage screen, which optimizes the material flow path and reduces the risk of material accumulation and blockage.
[0032] Furthermore, the first screening plate 3, the second screening plate 4, and the third screening plate 5 are tilted in the same direction.
[0033] By adopting the above technical solution, the first screening plate 3, the second screening plate 4, and the third screening plate 5 have the same inclination direction, which achieves the effect that the sliding direction of the material on each screening plate is consistent, simplifies the equipment structure, and ensures the continuity and controllability of the material flow.
[0034] Furthermore, the aperture of the first screening plate 3 is smaller than the aperture of the second screening plate 4, and the aperture of the second screening plate 4 is smaller than the aperture of the third screening plate 5.
[0035] By adopting the above technical solution, the first screening plate 3 has the smallest aperture, the second screening plate 4 has the next smallest aperture, and the third screening plate 5 has the largest aperture. This achieves the effect of classifying the material by passing through the screens with increasingly larger apertures from top to bottom. Finally, fine particles, medium particles, and coarse particles are collected below each screening plate. Particles not screened by the third screening plate 5 flow out directly, allowing for the collection of even coarser particles. This achieves gradient screening from fine to coarse particle size.
[0036] Please refer to Figure 2 The drive assembly 2 includes: a transmission component 7, the output end of which is connected to one of the first screening plate 3, the second screening plate 4, and the third screening plate 5; and a first drive component 8, which is connected to the input end of the transmission component 7 so as to drive the transmission component 7 to move, thereby driving one of the first screening plate 3, the second screening plate 4, and the third screening plate 5 to move.
[0037] By adopting the above technical solution, the drive assembly 2 is configured to include a first drive component 8 and a transmission component 7. The power is transmitted to one of the screening plates through the transmission component 7, thereby achieving the effect of driving the entire screening assembly 1 with a single power source. This simplifies the drive structure and reduces the complexity and cost of the equipment.
[0038] Furthermore, the first driving component 8 is a motor.
[0039] By adopting the above technical solution, the first driving component 8 is specifically embodied as a motor, which achieves the effect of providing stable, controllable and continuous rotational power, ensuring the continuity and reliability of the screening motion.
[0040] Please refer to Figure 2 The transmission component 7 includes: a connecting rod 9, one end of which is rotatably connected to one of the first screening plate 3, the second screening plate 4, and the third screening plate 5; a drive wheel 10, the other end of which is eccentrically connected to the drive wheel 10, and the connecting rod 9 is rotatably arranged relative to the drive wheel 10; the drive wheel 10 is drivenly connected to the first drive component 8, so that the first drive component 8 drives the drive wheel 10 to rotate, thereby driving the connecting rod 9 to drive one of the first screening plate 3, the second screening plate 4, and the third screening plate 5 to move.
[0041] By adopting the above technical solution, the transmission component 7 is specifically designed as a crank-connecting rod mechanism consisting of a drive wheel 10 and an eccentrically connected connecting rod 9, which achieves the effect of converting the rotational motion of the first drive component 8 into the reciprocating linear motion of the screening plate. This motion mode is more conducive to promoting the diffusion and screening of materials on the screen surface, improving screening efficiency, and the motion is relatively gentle.
[0042] Please refer to Figure 1The gradient screening device also includes: two vertical plates 11, which are spaced apart along the length of the first screening plate 3; the first screening plate 3, the second screening plate 4 and the third screening plate 5 are all arranged between the two vertical plates 11 and are slidably arranged relative to the two vertical plates 11.
[0043] By adopting the above technical solution, two spaced vertical plates 11 are set as the main support frame, and the first screening plate 3, the second screening plate 4 and the third screening plate 5 are slidably set in between, which achieves the effect of providing stable support and precise motion guidance for the entire screening assembly 1.
[0044] Limiting blocks 12 are provided on both sides of the first screening plate 3, the second screening plate 4, and the third screening plate 5. Limiting grooves 13 with the same inclination angle as the first screening plate 3, the second screening plate 4, and the third screening plate 5 are provided on the two upright plates 11. Each limiting block 12 is respectively set in correspondence with each limiting groove 13. Each limiting block 12 can be movably set in the corresponding limiting groove 13. The output end of the connecting rod 9 is rotatably connected to any one of the limiting blocks 12 on the first screening plate 3, the second screening plate 4, and the third screening plate 5.
[0045] By adopting the above technical solution, limiting blocks 12 are set on both sides of the first screening plate 3, the second screening plate 4 and the third screening plate 5, and an inclined limiting groove 13 matching them is opened on the vertical plate 11, which achieves the effect of precisely constraining the screening plates to slide smoothly along the predetermined inclined path, ensuring the stability and directional consistency of the screening movement; at the same time, the connecting rod 9 is rotatably connected to the limiting block 12 on any screening plate, realizing the transmission of driving force.
[0046] Furthermore, the first drive component 8 is mounted on one of the upright plates 11.
[0047] By adopting the above technical solution, the first driving component 8 is directly installed on the vertical plate 11, which achieves the effects of optimizing the spatial layout, shortening the transmission chain and enhancing the overall rigidity of the equipment.
[0048] Please refer to Figure 2 At least a portion of the second screening plate 4 is located below the first screening plate 3; at least a portion of the third screening plate 5 is located below the second screening plate 4.
[0049] By adopting the above technical solution, the second screening plate 4 is located below the first screening plate 3, and the third screening plate 5 is located below the second screening plate 4, thus achieving an effective stepped drop effect and ensuring that the material can smoothly slide from the upper screening plate to the lower screening plate for continuous screening.
[0050] Please refer to Figure 3The gradient screening device with a three-layer screen ratio also includes: a first scraper 14 and a second scraper 15, the first scraper 14 and the second scraper 15 being spaced apart along the width direction of the first screening plate 3, and the first scraper 14 and the second scraper 15 being connected to two vertical plates 11 respectively; the second screening plate 4 being movably inserted through the first scraper 14, and the second screening plate 4 being slidably arranged relative to the second scraper 15; and the third screening plate 5 being movably inserted through the second scraper 15.
[0051] By adopting the above technical solution, a first scraper plate 14 and a second scraper plate 15 are set up and slidably engaged with the second screening plate 4 and the third screening plate 5 respectively. This achieves the effect that the scraper plate can scrape off the material stuck on the edge of the screen hole or adhered to the surface of the screen plate during the reciprocating motion of the screening plate. It has a self-cleaning function, effectively prevents screen hole blockage, maintains screening efficiency, and can also prevent unscreened material or screened material from mixing with other screened materials.
[0052] Please refer to Figure 1 The gradient screening device also includes a material collection assembly 16, which includes: a first material collection bin 17, which is movably arranged along the length direction of the first screening plate 3 and is located below the first screening plate 3; a second material collection bin 18, which is movably arranged along the length direction of the first screening plate 3 and is located below the second screening plate 4; and a third material collection bin 19, which is movably arranged along the length direction of the first screening plate 3 and is located below the third screening plate 5. The first material collection bin 17, the second material collection bin 18, and the third material collection bin 19 are spaced apart along the width direction of the first screening plate 3.
[0053] By adopting the above technical solution, the movable first collection bin 17, second collection bin 18 and third collection bin 19 are set below the first screening plate 3, the second screening plate 4 and the third screening plate 5 respectively, achieving the effect of collecting fine particles, medium particles and coarse particles that pass through the screen respectively, realizing the precise classification and collection of materials; its movable design makes it easy to remove for unloading or replacement after screening.
[0054] Furthermore, the first collection bin 17, the second collection bin 18, and the third collection bin 19 have openings on one of the two vertical plates 11 for passage of the first collection bin 17, the second collection bin 18, and the third collection bin 19.
[0055] Please refer to Figure 1The gradient screening equipment also includes a guide component 20, which has a guide space. The guide component 20 is located on the side of the two vertical plates 11 near the third screening plate 5 and at the bottom of the third screening plate 5, so as to guide the material screened when the third screening plate 5 moves to the maximum stroke away from the second screening plate 4 into the third collection bin 19.
[0056] By adopting the above technical solution, a guide component 20 is set below the end of the third screening plate 5, which achieves the effect of accurately guiding the coarse particles that have passed through the aperture of the third screening plate 5 and are stationary at the end of the third screening plate 5 into the third collection bin 19 when the screening plate reciprocates to a specific position (maximum stroke), thus preventing the material from spilling.
[0057] The material collection assembly 16 also includes a fourth material collection bin 21. The fourth material collection bin 21 is provided on the side of the guide member 20 away from the two vertical plates 11. The fourth material collection bin 21 is used to receive the unscreened material on the third screening plate 5.
[0058] By adopting the above technical solution, a fourth collection bin 21 is set on the outside of the guide component 20, which achieves the effect of collecting the largest particles (i.e., the oversize material) that failed to pass through the aperture of the third screening plate 5, and completes the four-level classification of materials (fine, medium, coarse and extra-large particles).
[0059] Please refer to Figure 2 The gradient screening device further includes: a first baffle plate 22, which is rotatably disposed between two vertical plates 11 and located above the first screening plate 3, and is used to prevent material on the first screening plate 3 from flowing into the second screening plate 4; a second baffle plate 23, which is rotatably disposed between two vertical plates 11 and located above the second screening plate 4, and is used to prevent material on the second screening plate 4 from flowing into the third screening plate 5; and a third baffle plate, which is rotatably disposed between two vertical plates 11 and located above the third screening plate 5, and is used to prevent material on the third screening plate 5 from flowing out.
[0060] By adopting the above technical solution, the first baffle plate 22, the second baffle plate 23 and the third baffle plate are respectively located at the upper end of each level of screening plate, which achieves the effect of preventing the material from flowing into or out of the next level screen too early during the screening process, ensuring that the material has sufficient screening time on the current screening plate, and improving the grading accuracy and efficiency.
[0061] Furthermore, the first baffle plate 22, the second baffle plate 23, and the third baffle plate are driven by the second driving component, the third driving component, and the fourth driving component, respectively, wherein the second driving component, the third driving component, and the fourth driving component are stepper motors. Furthermore, the first driving component 8, the second driving component, the third driving component, and the fourth driving component are controlled by a PLC. When the first driving component 8 operates for a predetermined time, that is, when it drives the first screening plate 3, the second screening plate 4, and the third screening plate 5 to screen for a certain period of time, the PLC controls the second driving component, the third driving component, and the fourth driving component to rotate, causing the first baffle plate 22, the second baffle plate 23, and the third baffle plate to rotate, so that the material on the first screening plate 3 flows into the second screening plate 4, the material on the second screening plate 4 flows into the third screening plate 5, and the material on the third screening plate 5 flows into the fourth collection bin 21.
[0062] By adopting the above technical solution, each baffle is equipped with an independent stepper motor drive, and its action sequence is uniformly controlled by PLC, achieving the effect of automated batch screening: after the predetermined screening time (determined by PLC based on the running time of the first drive 8), PLC controls the baffles to open sequentially, so that the material that has completed the screening of the current level flows into the next level in batches or is collected as oversize material (flowing into the fourth collection bin 21), ensuring that each batch of material receives equal and sufficient screening time on each screen, thus optimizing screening quality and batch consistency.
[0063] Working principle:
[0064] When the equipment starts, the first driving component 8 (motor) drives the driving wheel 10 to rotate. The driving wheel 10 drives the limiting block 12, which is rotatably connected to it, to move through the eccentrically connected connecting rod 9. Since the limiting block 12 is fixed to the side of the first screening plate 3 (or the second screening plate 4, the third screening plate 5), and the limiting blocks 12 on both sides of all screening plates are constrained to slide within the limiting grooves 13 on the vertical plate 11 with the same inclination angle, the reciprocating motion of the connecting rod 9 drives the entire screening assembly 1 (including the interconnected first screening plate 3, second screening plate 4, and third screening plate 5) to move synchronously along the inclination direction of their respective limiting grooves 13. The material is fed into the first screening plate 3 from the upper end. Under the reciprocating motion of the screening plate and the action of gravity, the material spreads and tumbles on the surface of the first screening plate 3 (smallest aperture). Fine particles that meet the aperture requirements pass through the screen and fall into the first collection bin 17 arranged at intervals along the width below. Material that fails to pass through the screen moves towards the lower end of the first screening plate 3, but is blocked by the first baffle plate 22 in a blocking position. At the same time, the material moves on the surface of the second screening plate 4 (middle aperture), with particles passing through the screen falling into the second collection bin 18 below, and the material on the screen moving towards the lower end being blocked by the second baffle plate 23. The material then moves to the third screening plate 5. (Maximum aperture) Surface movement: After coarse particles pass through the screen, when the screening plate moves to the maximum stroke (lower end) away from the second screening plate 4, it is guided by the guide 20 located at its bottom and falls into the third collection bin 19. During the screening process, the first scraper 14 and the second scraper 15 fixed to the vertical plate 11 slide in cooperation with the reciprocating second screening plate 4 and the third screening plate 5, respectively, continuously scraping away materials that may clog the screen holes. After the first drive unit 8 has run for a predetermined time (controlled by the PLC), the PLC issues a command to control the second drive unit, the third drive unit, and the fourth drive unit (all stepper motors) to operate, respectively driving the second, third, and fourth drive units. When the first baffle plate 22, the second baffle plate 23, and the third baffle plate rotate to the open position, the material blocked at the lower end of the first screening plate 3 (mainly medium and coarse particles) flows into the upper end of the second screening plate 4 for screening, the material blocked at the lower end of the second screening plate 4 (mainly coarse particles) flows into the upper end of the third screening plate 5 for screening, and the oversized particles blocked at the lower end of the third screening plate 5 (materials that fail to pass through any screen) flow directly into the fourth collection bin 21 outside the guide component 20. After the batch unloading is completed, the PLC controls each baffle plate to reset to the blocking position, and the equipment continues to screen and collect the next batch of materials.
[0065] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.
[0066] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.
[0067] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.
[0068] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.
[0069] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.
Claims
1. A gradient screening device with a three-layer screen ratio, characterized in that, include: The screening assembly (1) has at least two screening sections with different screening apertures, each of which is movably arranged and interconnected with each other. A drive assembly (2) is driven to one of the screening units to drive the other screening units to move by driving the one screening unit to move.
2. The gradient screening device with a three-layer screen ratio according to claim 1, characterized in that, The screening component (1) includes: The first screening plate (3) is inclined; The second screening plate (4) is connected to the first screening plate (3), and the second screening plate (4) is inclined. The third screening plate (5) is connected to the second screening plate (4) and is inclined.
3. The gradient screening device with a three-layer screen ratio according to claim 2, characterized in that, The driving component (2) includes: The transmission component (7) is connected to one of the first screening plate (3), the second screening plate (4) and the third screening plate (5) via a transmission connection. The first driving member (8) is driven to the input end of the transmission member (7) so as to drive the transmission member (7) to move through the first driving member (8) so as to drive one of the first screening plate (3), the second screening plate (4) and the third screening plate (5) to move.
4. The gradient screening device with a three-layer screen ratio according to claim 3, characterized in that, The transmission component (7) includes: A connecting rod (9), one end of which is rotatably connected to one of the first screening plate (3), the second screening plate (4), and the third screening plate (5); The drive wheel (10) is eccentrically connected to the other end of the connecting rod (9), and the connecting rod (9) is rotatably arranged relative to the drive wheel (10). The drive wheel (10) is driven to be connected to the first drive member (8) so that the drive wheel (10) can be rotated by the first drive member (8) so that the connecting rod (9) can drive one of the first screening plate (3), the second screening plate (4) and the third screening plate (5) to move.
5. The gradient screening device with a three-layer screen ratio according to claim 3, characterized in that, The gradient screening device further includes two vertical plates (11), which are spaced apart along the length of the first screening plate (3); the first screening plate (3), the second screening plate (4) and the third screening plate (5) are all disposed between the two vertical plates (11) and are slidably disposed relative to the two vertical plates (11).
6. The gradient screening device with a three-layer screen ratio according to claim 5, characterized in that, At least a portion of the second screening plate (4) is located below the first screening plate (3); at least a portion of the third screening plate (5) is located below the second screening plate (4).
7. The gradient screening device with a three-layer screen ratio according to claim 6, characterized in that, The gradient screening device with three-layer screen ratio further includes: a first scraper (14) and a second scraper (15), the first scraper (14) and the second scraper (15) being spaced apart along the width direction of the first screening plate (3), the first scraper (14) and the second scraper (15) being respectively connected to the two vertical plates (11); the second screening plate (4) being movably inserted through the first scraper (14), and the second screening plate (4) being slidably disposed relative to the second scraper (15); the third screening plate (5) being movably inserted through the second scraper (15).
8. The gradient screening device with a three-layer screen ratio according to claim 5, characterized in that, The gradient screening device further includes a collection component (16), which comprises: The first collection bin (17) is movably arranged along the length direction of the first screening plate (3) and is located below the first screening plate (3); The second collection bin (18) is movably arranged along the length direction of the first screening plate (3) and is located below the second screening plate (4); The third collection bin (19) is movably arranged along the length direction of the first screening plate (3) and is located below the third screening plate (5). The first collection bin (17), the second collection bin (18) and the third collection bin (19) are spaced apart along the width direction of the first screening plate (3).
9. The gradient screening device with a three-layer screen ratio according to claim 8, characterized in that, The gradient screening device further includes a guide component (20), which is provided with a guide space. The guide component (20) is located on the side of the two vertical plates (11) close to the third screening plate (5) and at the bottom of the third screening plate (5) so as to guide the material screened when the third screening plate (5) moves to the maximum stroke away from the second screening plate (4) into the third collection bin (19).
10. The gradient screening device with a three-layer screen ratio according to claim 5, characterized in that, The gradient screening device further includes: The first baffle plate (22) is rotatably disposed between the two vertical plates (11) and located above the first screening plate (3). The first baffle plate (22) is used to block the material on the first screening plate (3) from flowing into the second screening plate (4). The second baffle plate (23) is rotatably disposed between the two vertical plates (11) and located above the second screening plate (4). The second baffle plate (23) is used to prevent the material on the second screening plate (4) from flowing into the third screening plate (5). The third baffle plate is rotatably disposed between the two vertical plates (11) and located above the third screening plate (5). The third baffle plate is used to block the material from flowing out of the third screening plate (5).