Dynamic gap anti-blocking cloth screening machine

Abstract

This invention relates to the field of fabric screening equipment and discloses a dynamic gap anti-clogging fabric screening machine, comprising: multiple screening rollers arranged at an angle from top to bottom, with the central axes of the multiple screening rollers located on the same plane, and a gap provided between adjacent screening rollers. Each screening roller includes a first rotating shaft, a screening cylinder, and screen plates. The two ends of the screening cylinder are connected to the first rotating shaft, and multiple screen plates are evenly arranged on the side wall of the screening cylinder. The gap is set between the screen plates of adjacent screening rollers. Each screen plate includes multiple arc-shaped convex edges and multiple arc-shaped concave edges, which are interlaced and connected. The arc-shaped convex edges and arc-shaped concave edges of adjacent screening rollers correspond to each other. During the rotation of the screening rollers, the gap is changed to prevent clogging.

Description

Technical Field

[0001] This invention relates to the field of fabric screening equipment, and more particularly to a dynamic gap anti-clogging fabric screening machine. Background Technology

[0002] The material screening machine separates materials through the gap between screening shafts and conveys them by the continuous forward rotation of the screening shafts. The material passes through the vertically forward trough of the screening shafts, which helps to distribute the material evenly. The material screening machine separates coarse and fine materials, preventing fine or powdery materials from entering the crusher and minimizing over-grinding. It can be widely used in industries that require coarse and fine material separation, such as coal, ore, power generation, chemical, coking, steel, papermaking, grain, and metal industries.

[0003] However, in existing cloth screening machines, the gap between the screening shafts is fixed when screening materials. If the material has high moisture content or high viscosity, it is easy for the material to get stuck in the gap, causing blockage. Summary of the Invention

[0004] This application discloses a dynamic gap anti-clogging fabric screening machine to solve the problem in the prior art where materials with excessive moisture and high viscosity are prone to clogging in the gaps, thus causing gap blockage.

[0005] To solve the above problems, the present invention adopts the following technical solution: A dynamic gap anti-clogging fabric screening machine includes: Multiple screening rollers are arranged at an angle from top to bottom, and the central axes of the multiple screening rollers are located on the same plane, with gaps between adjacent screening rollers; The screening roller includes a first rotating shaft, a screening cylinder, and screen plates; The two ends of the screening cylinder are connected to the first rotating shaft, and multiple screen plates are evenly arranged on the side wall of the screening cylinder with the gap between the screen plates of two adjacent screening rollers. The screen plate includes multiple arc-shaped convex edges and multiple arc-shaped concave edges. The multiple arc-shaped convex edges and arc-shaped concave edges are connected to each other in an alternating manner, and the arc-shaped convex edges of two adjacent screening rollers correspond to the arc-shaped concave edges. The gap is set to vary during the rotation of the screening rollers to prevent clogging.

[0006] The technical solution adopted in this invention can achieve the following beneficial effects: 1. The screen plates of the present invention are formed by interlacing arc-shaped convex edges and arc-shaped concave edges. The arc-shaped convex edges and arc-shaped concave edges of two adjacent screening rollers correspond one-to-one and cooperate with each other to form staggered gaps, which play a role in sorting and dispersing materials, preventing materials from clumping and blocking the gaps. Relying on the rotational movement of the screening rollers, the arc-shaped convex edges and arc-shaped concave edges of adjacent screen plates are alternately staggered, and the gap size and spatial shape change periodically. This generates a squeezing, tearing and peeling effect on materials stuck or blocked in the gaps, automatically clearing blockages and realizing active dynamic anti-blocking. This significantly reduces the probability of blockage in the screening gaps, allowing the equipment to operate continuously for a long time, reducing the frequency of downtime for cleaning, and significantly improving the overall operating efficiency and operational continuity of the material screening machine. 2. This invention forms a natural downward sliding conveying path for materials by multiple screening rollers, relying on gravity to achieve material distribution and screening. The layered arrangement of multiple screening rollers extends the screening stroke of the material, increases the contact time between the material and the screening rollers, improves the accuracy of grading and screening and the screening capacity, thereby improving screening efficiency. 3. This invention, while ensuring high-quality and high-efficiency material screening, facilitates the use of subsequent crushing equipment, reduces wear on the crusher, ensures the safe operation of the crusher, and extends the service life of the crusher. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0008] Figure 1 This is a schematic front cross-sectional view of the overall structure disclosed in some embodiments of this application; Figure 2 yes Figure 1 Enlarged structural diagram at point A; Figure 3 yes Figure 1 Enlarged structural diagram at point B; Figure 4 This is a schematic diagram of the overall left-side cross-sectional structure disclosed in some embodiments of this application; Figure 5 This is a schematic cross-sectional view of the screening roller disclosed in some embodiments of this application; Figure 6 This is one of the side cross-sectional structural schematic diagrams of the screening roller disclosed in some embodiments of this application; Figure 7 This is a schematic front view of the overall structure disclosed in some embodiments of this application; Figure 8 This is a top view schematic diagram of the primary fabric-making mechanism disclosed in some embodiments of this application; Figure 9 This is the second side view cross-sectional structural schematic diagram of the screening roller disclosed in some embodiments of this application.

[0009] In the picture: 100-Screening roller; 110-First rotating shaft; 120-Screening cylinder; 130-Screen plate; 131-Arc-shaped convex edge; 132-Arc-shaped concave edge; 140-First screen hole; 150-Second screen hole; 160-Guide plate; 200-gap; 300 - Machine casing; 310 - Screening chamber; 320 - Feed inlet; 330 - Coarse material outlet; 340 - Fine material outlet; 400 - Primary fabric distribution mechanism; 410 - Fabric distribution plate; 420 - Dispersion plate; 430 - Telescopic rod; 440 - Elastic element; 450 - Baffle; 500 - Cleaning mechanism; 510 - Second rotating shaft; 520 - Cleaning plate; 600 - Synchronizing mechanism; 610 - First synchronous pulley; 620 - Second synchronous pulley; 630 - Synchronizing belt; 700-Driver; 800-Support frame. Detailed Implementation

[0010] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0011] The terms "first," "second," "third," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," "third," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0012] The inventive concept of this application is described here: In existing fabric screening machines, the gap between the screening shafts is fixed when screening materials. If the material has high moisture content or high viscosity, it is easy to get stuck in the gap, causing material jamming and preventing it from passing through smoothly. Over time, this will cause blockage of the gap, affecting the screening effect and failing to achieve the purpose of uniform screening. In addition, existing fabric screening machines lack an effective cleaning mechanism. Once a blockage occurs, the machine needs to be stopped for manual cleaning, which not only increases the labor intensity of operators but also reduces production efficiency and increases production costs.

[0013] Based on this, the inventors have provided a dynamic gap anti-clogging fabric screening machine, which can automatically clean the gaps, prevent materials with excessive moisture and high viscosity from clogging the gaps and causing blockage, improve the screening effect, and clean up stuck materials without stopping the machine for manual cleaning, reducing the labor intensity of operators, improving production efficiency, and reducing production costs.

[0014] The following is in conjunction with the appendix Figures 1 to 9 This application provides a detailed description of a dynamic gap anti-clogging fabric screening machine through specific embodiments and application scenarios.

[0015] Reference Figure 1 and Figure 4 A dynamic gap anti-clogging fabric screening machine includes: multiple screening rollers 100; Multiple screening rollers 100 are arranged at an angle from top to bottom, and the central axes of the multiple screening rollers 100 are located on the same plane, with a gap 200 between two adjacent screening rollers 100. Specifically, multiple screening rollers 100 form a natural downward sliding conveying path for the material, relying on gravity to achieve material distribution and screening. The layered arrangement of multiple screening rollers 100 extends the screening stroke of the material, increases the contact time between the material and the screening rollers 100, improves the accuracy and throughput of the grading screening, and thus improves the screening efficiency. The coplanarity of the central axis ensures the synchronicity of the operation of each screening roller 100 and the consistency of the material conveying direction, avoids material deviation, accumulation and deviation, and ensures the continuous and stable screening operation.

[0016] The continuous automatic material feeding and screening is achieved through multiple screening rollers 100. The screening process is smooth, the equipment has strong operational stability, and it is suitable for continuous processing scenarios of large batches of materials.

[0017] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 The screening roller 100 includes a first rotating shaft 110, a screening cylinder 120, and a screen plate 130; The two ends of the screening cylinder 120 are connected to the first rotating shaft 110. Multiple screen plates 130 are evenly arranged on the side wall of the screening cylinder 120, and the gap 200 is set between the screen plates 130 of two adjacent screening rollers 100. Specifically, multiple screen plates 130 are evenly arranged on the side wall along the length of the screening cylinder 120, with adjacent screen plates 130 set at a certain angle; and the screen plates 130 of adjacent screening rollers 100 are also set at a certain angle; the first rotating shaft 110 provides rotational support and power transmission for the screening cylinder 120, ensuring stable circumferential rotation of the screening cylinder 120; the screen plates 130 convey and compress the material, facilitating automatic cleaning of material blockages.

[0018] Reference Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 9 The screen plate 130 includes multiple arc-shaped convex edges 131 and multiple arc-shaped concave edges 132. The multiple arc-shaped convex edges 131 and arc-shaped concave edges 132 are connected to each other in an alternating manner. The arc-shaped convex edges 131 and arc-shaped concave edges 132 of two adjacent screening rollers 100 correspond to each other. Specifically, the screen plate 130 is formed by interlacing arc-shaped convex edges 131 and arc-shaped concave edges 132, and the arc-shaped convex edges 131 and arc-shaped concave edges 132 of two adjacent screening rollers 100 correspond one-to-one and cooperate with each other to form staggered gaps 200, which plays a role in sorting and dispersing the material and preventing the material from clumping together and blocking the gaps 200.

[0019] In this embodiment, both the arc-shaped convex edge 131 and the arc-shaped concave edge 132 can be arranged in an arc shape, and the connection between the arc-shaped convex edge 131 and the arc-shaped concave edge 132 is made with an arc transition treatment; the two ends of the arc-shaped convex edge 131 are connected to the arc-shaped concave edge 132, and the two ends of the arc-shaped concave edge 132 are connected to the arc-shaped convex edge 131.

[0020] Reference Figure 6 The screen plate 130 is composed of two arc-shaped convex edges 131 and two arc-shaped concave edges 132. The gap 200 is arc-shaped. The screen plates 130 on the screening roller 100 are set at 90° to each other. The screen plates 130 on the two adjacent screening rollers 100 are set at 90° to each other.

[0021] Reference Figure 9 The screen plate 130 is composed of 4 arc-shaped convex edges 131 and 4 arc-shaped concave edges 132, with the gap 200 set in an arc shape. The screen plates 130 on the screening roller 100 are set at 45° to each other, and the screen plates 130 on the two adjacent screening rollers 100 are set at 45° to each other, and so on.

[0022] During the rotation of the screening roller 100, the gap 200 is set to vary to prevent the gap 200 from becoming blocked.

[0023] Specifically, when the arc-shaped convex edge 131 of two adjacent screening rollers 100 corresponds to the arc-shaped concave edge 132, the gap 200 is at its maximum. Since multiple screening rollers 100 rotate in the same direction, during the rotation of two adjacent screening rollers 100, as their arc-shaped convex edge 131 and arc-shaped concave edge 132 correspond to each other again, the gap 200 first changes from large to small, and then from small to large, achieving dynamic change; and during the rotation of two adjacent screening rollers 100, the arc-shaped convex edges 131 of the two adjacent screening rollers 100 will not interfere with each other.

[0024] Relying on the rotational motion of the screening roller 100, the arc-shaped convex edge 131 and arc-shaped concave edge 132 of the adjacent screen plates 130 are alternately misaligned, and the size and spatial shape of the gap 200 change periodically. This causes the material stuck or blocked in the gap 200 to be squeezed, torn, and peeled off, automatically clearing the blockage. The dynamically changing gap 200 can change the size of the material passing through the screen and the passage space in real time, realizing active dynamic anti-blocking, which greatly reduces the probability of blockage in the screening gap 200. The equipment can operate continuously for a long time, reducing the frequency of downtime for cleaning, and significantly improving the overall operating efficiency and continuous operation of the material screening machine.

[0025] Reference Figure 1 and Figure 4 In this embodiment, the fabric screening machine also includes a housing 300, a primary fabric feeding mechanism 400, a cleaning mechanism 500, and a synchronization mechanism 600. The screening roller 100 is rotatably mounted inside the housing 300. The primary feeding mechanism 400 and the cleaning mechanism 500 are both mounted inside the housing 300. The primary feeding mechanism 400 is mounted above the screening roller 100, and the cleaning mechanism 500 is mounted below the screening roller 100. The screening roller 100 and the cleaning mechanism 500 are connected by a synchronization mechanism 600. Specifically, the first rotating shafts 110 at both ends of the screening cylinder 120 are rotatably connected to the inner wall of the casing 300; the synchronization mechanism 600 is located outside the casing 300.

[0026] The primary material distribution mechanism 400 is used to initially distribute the material, pre-disperse and evenly distribute the input material, and prevent the material from clustering together and large clumps from falling directly into the screening rollers 100. The cleaning mechanism 500 is used to clean the screening roller 100, specifically scraping off the material adhering between the screen plates 130 and on the surface of the screening cylinder 120, making up for the lack of self-cleaning of the dynamic gap 200 of the screening roller 100, realizing external active unblocking, and maintaining the screening capacity and anti-blocking performance of the equipment for a long time. Specifically, the cleaning mechanism 500 is provided in multiple sets, with each screening roller 100 corresponding to one set of cleaning mechanism 500.

[0027] The synchronization mechanism 600 is used to transmit the power of the drive screen roller 100 to the cleaning mechanism 500, ensuring that the timing of the cleaning action and the rotation of the screen roller 100 are precisely matched, the cleaning position and contact angle are stable, the unblocking effect is uniform and reliable, and the number of transmission parts is reduced, thus reducing equipment energy consumption, manufacturing costs and failure points.

[0028] In this embodiment, a screening chamber 310 is provided inside the housing 300. The two ends of the screening chamber 310 are respectively connected to the feed inlet 320 and the coarse material outlet 330. The screening roller 100, the primary material distribution mechanism 400 and the cleaning mechanism 500 are all arranged inside the screening chamber 310. The primary material distribution mechanism 400 is located directly below the feed inlet 320. The bottom of the screening chamber 310 is connected to the fine material outlet 340.

[0029] Specifically, the top surface of the screening chamber 310 is arranged at an incline from the feed inlet 320 to the coarse material outlet 330; multiple screening rollers 100 are arranged at an incline from the top to the bottom of the screening chamber 310; large-sized materials intercepted by the multiple screening rollers 100 are discharged through the coarse material outlet 330, causing the large-sized materials to fall into the crusher; and fine materials screened by the multiple screening rollers 100 are discharged through the fine material outlet 340.

[0030] Reference Figure 4 and Figure 5 In this embodiment, the screening roller 100 further includes a first screen hole 140, a second screen hole 150, and a guide plate 160; Multiple first screen holes 140 are evenly arranged between each screen plate 130 of the screening cylinder 120. Multiple second screen holes 150 are evenly arranged around both ends of the screening cylinder 120. Multiple guide plates 160 are provided on the inner side wall of the screening cylinder 120 to guide the material to both ends of the screening cylinder 120. The guide plates 160 correspond one-to-one with the second screen holes 150.

[0031] Specifically, multiple first screen holes 140 are evenly arranged around the circumference of the screening cylinder 120; the guide plate 160 is arc-shaped; fine materials with smaller particle sizes fall into the screening cylinder 120 through the first screen holes 140 by their own gravity, or fall to the bottom of the screening chamber 310 through the gap 200 between the screen plates 130 of adjacent screening cylinders 120; fine materials inside the screening cylinder 120 can fall back to the bottom of the screening chamber 310 through the first screen holes 140 by their own gravity. The rotation of the 20 rollers further accelerates the material's exit from the screening cylinder 120. Coarse material, due to its own gravity, the friction of the screening rollers 100, the forced rolling inertia, and the action of the screen plates 130, cannot fall into the first screen hole 140 or the gap 200 between the screen plates 130. It is rapidly pushed to the coarse material outlet 330, from which the coarse material is discharged. During the rotation of the screening rollers 100, the screen plates 130 on each screening roller 100 can disperse the material. The purpose of the screening is to compress, disperse, and convey the material during rotation of the screen plate 130. Fine materials in the material are pressed into the first screen hole 140, improving screening quality and preventing material from getting stuck between the two screening rollers 100. The first screen hole 140 enables multi-stage separation of coarse and fine materials, avoiding the limitations of screening only through a single gap 200 between the rollers, thus improving screening effect and overall processing efficiency, and ultimately enhancing screening quality. If the amount of material inside the screening cylinder 120 is large, the first screen hole 140 alone may not be sufficient for large-scale discharge. During rotation, the screening roller 100 generates centrifugal force, and the material is precisely pushed to the corresponding second screen hole 150 position by the guiding effect of the arc-shaped guide plate 160. This forces the material to exit from the second screen hole 150 at the end, not only preventing large amounts of material from clogging the screening cylinder 120 but also significantly accelerating the screening speed and reducing internal blockage problems.

[0032] Reference Figure 4 and Figure 5 In this embodiment, the diameter of the first sieve hole 140 is 10-15mm, and the gap 200 varies from 0-30mm.

[0033] Specifically, the fixed aperture size of the first screen hole 140 accurately defines the screening standard, enabling precise grading of coarse and fine materials; the gap 200 can be dynamically switched periodically between 0-30mm, which can squeeze and peel off materials stuck in the gap 200, taking into account both self-cleaning and dynamic anti-clogging functions, thus improving screening stability.

[0034] Reference Figure 4 and Figure 7 In this embodiment, a support frame 800 is installed on the outside of the housing 300, and a drive component 700 is installed on the support frame 800. The output end of the drive component 700 is connected to the first rotating shaft 110.

[0035] Specifically, multiple support frames 800 and drive components 700 are provided, with each support frame 800 corresponding to a different drive component 700. The support frames 800 provide independent mounting bases for the drive components 700. The drive components 700 are horizontally positioned and are preferably geared motors. Their specific structure and working principle are common knowledge and will not be described in detail here. The output end of the drive component 700 is connected to one of the first rotating shafts 110 that penetrates the casing 300 through a flange, ensuring the uniform and stable rotation speed of the screening cylinder 120.

[0036] Reference Figure 1 , Figure 3 and Figure 8 In this embodiment, the primary fabric-laying mechanism 400 includes a fabric-laying plate 410 and a dispersing plate 420; The material plate 410 is rotatably disposed inside the housing 300 and is inclined. The material plate 410 is located above the screening roller 100 and is provided with multiple dispersing plates 420.

[0037] Specifically, the higher end of the feeding plate 410 is rotatably connected to the inner wall of the housing 300; the lower end of the feeding plate 410 extends out of the area projected onto the feeding port 320 on the feeding plate 410; multiple dispersing plates 420 are evenly distributed along the length of the feeding plate 410 on the surface of the lower end of the feeding plate 410; preferably, the dispersing plates 420 are arranged in a triangular shape; the inclined structure of the feeding plate 410 utilizes the gravity of the material to achieve stable flow guidance and slow material drop, buffering the impact force of the feeding and avoiding damage to the screening roller 100 caused by concentrated feeding; the dispersing plates 420 divide and disperse the material, break up the material agglomeration, divide the overall material into multiple streams, avoid material unbalanced loading and localized material clustering, reduce the risk of jamming and clogging from the source, and improve the screening uniformity and anti-clogging ability of the whole machine.

[0038] Reference Figure 1 and Figure 3 In this embodiment, the primary fabric-laying mechanism 400 also includes a baffle 450. The baffle 450 is located above the higher end of the fabric plate 410. The baffle 450 is inclined and the higher end of the baffle 450 is connected to the inner wall of the housing 300. The baffle 450 blocks the gap between the fabric plate 410 and the inner wall of the housing 300, preventing material from getting stuck in the gap between the fabric plate 410 and the inner wall of the housing 300, which would damage the fabric plate 410 and reduce the fabric-laying effect.

[0039] Reference Figure 1 and Figure 3 In this embodiment, the primary fabric-making mechanism 400 also includes a telescopic rod 430 and an elastic element 440; One end of a telescopic rod 430 is rotatably connected to the bottom of the fabric plate 410, and the other end of the telescopic rod 430 is rotatably connected to the inner wall of the housing 300. An elastic element 440 sleeved on the outer surface of the telescopic rod 430 is connected between the fabric plate 410 and the inner wall of the housing 300.

[0040] Specifically, connecting seats are rotatably connected to the bottom of the feeding plate 410 and the inner wall of the housing 300 located below the higher end of the feeding plate 410. The two ends of the telescopic rod 430 are connected to the connecting seats, and an elastic element 440 sleeved on the outer surface of the telescopic rod 430 is connected between the two connecting seats. The elastic element 440 is preferably a spring. Through the cooperation of the telescopic rod 430 and the elastic element 440, the feeding plate 410 swings slightly when impacted by materials. The elastic element 440 is deformed under pressure, absorbing the impact kinetic energy of the materials and achieving buffering and shock absorption. The elastic element 440 also quickly pushes the feeding plate 410 to reset by its own elastic force, which, together with the dispersing plate 420, further disperses the agglomerated materials, ensuring the continuous and stable material distribution effect of the primary feeding mechanism 400, and providing a preliminary guarantee for the stable screening and long-term anti-clogging of the rear screening roller 100.

[0041] Reference Figure 1 , Figure 2 and Figure 4 In this embodiment, the cleaning mechanism 500 includes a second rotating shaft 510 and a cleaning plate 520; The second rotating shaft 510 is rotatably disposed inside the housing 300. Multiple cleaning plates 520 are evenly disposed on the second rotating shaft 510, and the cleaning plates 520 are correspondingly disposed with each screen plate 130 of the screening cylinder 120.

[0042] Specifically, the second rotating shaft 510 is arranged parallel to the first rotating shaft 110. The two ends of the second rotating shaft 510 are rotatably connected to the machine housing 300. The cleaning plate 520 is arranged in a ring shape. The second rotating shaft 510 drives the cleaning plate 520 to rotate, continuously scraping away the material stuck or adhering between the screen plates 130. This makes up for the limitations of the dynamic self-cleaning of the screening roller 100, realizes external active unblocking, and maintains the screening capacity and anti-blocking performance of the equipment for a long time.

[0043] Reference Figure 4 In this embodiment, the synchronization mechanism 600 includes a first synchronous pulley 610, a second synchronous pulley 620, and a synchronous belt 630; The first synchronous pulley 610 is connected to the first rotating shaft 110, the second synchronous pulley 620 is connected to the second rotating shaft 510, and a synchronous belt 630 is wound between the first synchronous pulley 610 and the second synchronous pulley 620.

[0044] Specifically, the first synchronous pulley 610 is connected to the first rotating shaft 110 that penetrates the housing 300, and the second synchronous pulley 620 is connected to one end of the second rotating shaft 510 that penetrates the housing 300. The first synchronous pulley 610 and the second synchronous pulley 620 are vertically arranged. The first synchronous pulley 610 and the second synchronous pulley 620 can be toothed pulleys, and the synchronous belt 630 can be a toothed belt. The specific structure and working principle of the toothed pulleys and toothed belts are common knowledge, so they will not be described in detail here.

[0045] Working principle: During use, the material enters the screening chamber 310 through the feed inlet 320. The material is smoothly guided by the distribution plate 410 and divided and dispersed by the dispersing plate 420. The dispersed material falls onto the screening rollers 100. The drive component 700 drives the first rotating shaft 110 to rotate, thereby driving the screening cylinder 120 to rotate. The screening rollers 100 screen the material. Coarse material cannot fall into the first screen hole 140 or the gap 200 between the screen plates 130 due to its own gravity, friction of the screening rollers 100, forced rolling inertia, and the action of the screen plates 130. It is quickly pushed to the coarse material outlet 330 and discharged from the coarse material outlet 330. Fine material falls into the screening cylinder 120 through the first screen hole 140 due to its own gravity, or passes through the adjacent screen. The material falls through the gap 200 between the screen plates 130 of the screening cylinder 120 to the bottom of the screening chamber 310. The fine material inside the screening cylinder 120 can fall through the first screen hole 140 to the bottom of the screening chamber 310 again by its own gravity. The fine material is finally discharged from the fine material outlet 340. If the amount of material inside the screening cylinder 120 is large, the material cannot be discharged in large quantities by just passing through the first screen hole 140. The screening roller 100 generates centrifugal force during rotation. The material is guided by the arc-shaped guide plate 160 and accurately pushed to the position of the corresponding second screen hole 150. The material is forcibly guided to be discharged from the second screen hole 150 at the end. The dynamically changing gap 200 squeezes, tears and peels the material stuck and blocked in the gap 200, automatically clears the blockage and realizes active dynamic anti-blocking. When the first rotating shaft 110 rotates, it synchronously drives the first synchronous pulley 610 to rotate. The first synchronous pulley 610 drives the second synchronous pulley 620 to rotate through the synchronous belt 630. The second synchronous pulley 620 drives the second rotating shaft 510 to rotate. The second rotating shaft 510 drives the cleaning plate 520 to rotate, continuously scraping away the material stuck or adhering between the screen plates 130. This compensates for the limitations of the dynamic self-cleaning of the screening roller 100, realizes external active unblocking, and maintains the screening capacity and anti-blocking performance of the equipment for a long time.

[0046] It should be noted that, in this document, 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 a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0047] Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0048] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A dynamic gap anti-clogging fabric screening machine, characterized in that, include: Multiple screening rollers (100) are arranged at an angle from top to bottom, and the central axes of the multiple screening rollers (100) are located on the same plane, with a gap (200) between two adjacent screening rollers (100). The screening roller (100) includes a first rotating shaft (110), a screening cylinder (120), and a screen plate (130). The two ends of the screening cylinder (120) are connected to the first rotating shaft (110), and a plurality of screen plates (130) are evenly arranged on the side wall of the screening cylinder (120). The gap (200) is set between the screen plates (130) of two adjacent screening rollers (100). The sieve plate (130) includes multiple arc-shaped convex edges (131) and multiple arc-shaped concave edges (132), and the multiple arc-shaped convex edges (131) and arc-shaped concave edges (132) are connected to each other in an alternating manner. The arc-shaped convex edges (131) of two adjacent sieve rollers (100) correspond to the arc-shaped concave edges (132). During the rotation of the screening roller (100), the gap (200) is set to vary to prevent the gap (200) from becoming blocked.

2. The dynamic gap anti-clogging fabric screening machine according to claim 1, characterized in that, The screening roller (100) also includes a first screen hole (140), a second screen hole (150), and a guide plate (160). The screening cylinder (120) has a plurality of first screen holes (140) evenly arranged between each screen plate (130), and a plurality of second screen holes (150) evenly arranged around both ends of the screening cylinder (120). The inner side wall of the screening cylinder (120) is provided with a plurality of guide plates (160) that guide the material to both ends of the screening cylinder (120), and the guide plates (160) correspond one-to-one with the second screen holes (150).

3. The dynamic gap anti-clogging fabric screening machine according to claim 2, characterized in that, The diameter of the first sieve hole (140) is 10-15 mm, and the gap (200) varies from 0-30 mm.

4. The dynamic gap anti-clogging fabric screening machine according to claim 1, characterized in that, The fabric screening machine also includes a casing (300), a primary fabric feeding mechanism (400), a cleaning mechanism (500), and a synchronization mechanism (600). The screening roller (100) is rotatably disposed inside the housing (300). The primary feeding mechanism (400) and the cleaning mechanism (500) are both disposed inside the housing (300). The primary feeding mechanism (400) is disposed above the screening roller (100), and the cleaning mechanism (500) is disposed below the screening roller (100). The screening roller (100) and the cleaning mechanism (500) are connected by a synchronization mechanism (600). The primary fabric spreading mechanism (400) is used for the initial spreading of the material; The cleaning mechanism (500) is used to clean the screening roller (100); The synchronization mechanism (600) is used to transmit the power of the drive screening roller (100) to the cleaning mechanism (500).

5. The dynamic gap anti-clogging fabric screening machine according to claim 4, characterized in that, The primary fabric-laying mechanism (400) includes a fabric-laying plate (410) and a dispersing plate (420). The fabric plate (410) is rotatably disposed inside the housing (300) and is inclined. The fabric plate (410) is located above the screening roller (100) and is provided with multiple dispersing plates (420).

6. The dynamic gap anti-clogging fabric screening machine according to claim 5, characterized in that, The primary fabric-making mechanism (400) also includes a telescopic rod (430) and an elastic element (440). The bottom of the fabric plate (410) is rotatably connected to one end of the telescopic rod (430), and the other end of the telescopic rod (430) is rotatably connected to the inner wall of the housing (300). An elastic element (440) sleeved on the outer surface of the telescopic rod (430) is connected between the fabric plate (410) and the inner wall of the housing (300).

7. The dynamic gap anti-clogging fabric screening machine according to claim 4, characterized in that, The cleaning mechanism (500) includes a second rotating shaft (510) and a cleaning plate (520); The second rotating shaft (510) is rotatably disposed inside the housing (300). Multiple cleaning plates (520) are evenly disposed on the second rotating shaft (510), and the cleaning plates (520) are correspondingly disposed with each screen plate (130) of the screening cylinder (120).

8. The dynamic gap anti-clogging fabric screening machine according to claim 7, characterized in that, The synchronization mechanism (600) includes a first synchronous pulley (610), a second synchronous pulley (620), and a synchronous belt (630). The first synchronous pulley (610) is connected to the first rotating shaft (110), the second synchronous pulley (620) is connected to the second rotating shaft (510), and a synchronous belt (630) is wound between the first synchronous pulley (610) and the second synchronous pulley (620).

9. The dynamic gap anti-clogging fabric screening machine according to claim 7, characterized in that, A support frame (800) is installed on the outside of the housing (300), and a drive component (700) is installed on the support frame (800). The output end of the drive component (700) is connected to the first rotating shaft (110).

10. The dynamic gap anti-clogging fabric screening machine according to claim 4, characterized in that, The casing (300) has a screening chamber (310) inside. The two ends of the screening chamber (310) are respectively connected to the feed inlet (320) and the coarse material outlet (330). The screening roller (100), the primary material distribution mechanism (400) and the cleaning mechanism (500) are all located in the screening chamber (310). The primary material distribution mechanism (400) is located directly below the feed inlet (320). The bottom of the screening chamber (310) is connected to the fine material outlet (340).

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