An integrated crushing and screening system

Abstract

This invention relates to the field of solid screening technology, and more particularly to an integrated crushing and screening system. The system includes a crushing assembly, a first screening assembly, and a second screening assembly mounted on a frame. The crushing assembly includes a crushing component and a vibrating screen component. The vibrating screen component is located between the lower end of the crushing component and the first screening assembly, and includes a support frame, a vibrating screen tube, a vibrating screen frame, and a movable component. The support frame is fixed to the frame. The upper end of the vibrating screen tube is connected to the lower end of the crushing component, and the lower end is connected to the vibrating screen frame and has vibrating screen holes. The vibrating screen frame is suspended from the support frame by the movable component. The vibrating screen frame generates an inclined displacement relative to the support frame through the movable component, causing the material clumps to be broken up and separated from the vibrating screen holes during continuous shaking. This invention, through the pre-treatment of shaking between crushing and screening, breaks up and separates adhering clumps before they enter the screening equipment, avoiding screen blockage, significantly extending the continuous operating time of the system, and improving screening efficiency.

Description

Technical Field

[0001] This invention relates to the field of solid screening technology, and more particularly to an integrated system for crushing and screening. Background Technology

[0002] Existing screening and distribution systems typically integrate crushing and screening equipment on the same frame. After crushing, the material enters the screening equipment directly through a connecting channel for particle size classification. In actual processing of solid or initially sticky materials, the crushed material often exists in the form of adhering clumps. When these material clumps enter the screening equipment directly, they easily adhere to the screening surface, causing screen blockage, reduced screening efficiency, and frequent system shutdowns for cleaning.

[0003] Existing systems typically include anti-clogging structures such as scrapers, vibrating screen cleaning devices, or elastic screen surfaces on screening equipment to clean materials that have already adhered to the screen surface. Understandably, these methods are all passive cleaning measures after the adhesion problem occurs, and cannot pre-disperse material clumps before they enter the screening equipment. When sticky material clumps continue to enter the screening equipment, the effective working area of ​​the screening surface gradually decreases with the running time, making it difficult for the system to operate continuously and stably for a long time. Summary of the Invention

[0004] The main objective of this invention is to provide an integrated crushing and screening system, which aims to solve the problem that existing systems are difficult to achieve dynamic screening, leading to frequent clogging.

[0005] To achieve the above objectives, the present invention provides an integrated crushing and screening system, the system comprising: A crushing assembly, which is mounted on a frame; A first screening component is mounted on a frame, and the feed end of the first screening component is connected to the discharge end of the crushing component. The first screening component includes a first screening port. The second screening component has its feed end connected to the first screening port; The crushing assembly includes a crushing component and a vibrating screen component. The vibrating screen component includes a support frame, a vibrating screen tube, a vibrating screen frame, and movable parts. The support frame is fixedly connected to the machine frame. The vibrating screen tube is connected to the lower end face of the crushing component. The vibrating screen frame is mounted on the support frame through the movable parts, and the vibrating screen tube is also connected to the vibrating screen frame. The lower end of the vibrating screen tube is provided with several vibrating screen holes. After the raw material is crushed by the crushing component, it falls into the vibrating screen tube and comes into contact with the vibrating screen frame. This causes the vibrating screen frame to tilt relative to the support frame through the moving parts, so as to achieve the shaking separation of the raw material through the vibrating screen holes.

[0006] Optionally, the geometric center of the shaking screen frame is on the extension line of the central axis of the crushing component, a shaking screen block is provided on the geometric center of the shaking screen frame, and a plurality of shaking screen wheels are evenly distributed on the outer periphery of the shaking screen block, and the shaking screen wheels are inclined.

[0007] Optionally, the movable component includes several movable seats and several elastic components, the movable seats are ball-jointed to the end face of the support frame, and the two ends of the elastic components are fixedly connected to the shaking screen frame and the movable seats, respectively.

[0008] Optionally, the first screening component includes a screening base, a screening column, a screening belt, a driving component, and several transmission components. The screening base is fixedly mounted on the frame, the feed end of the first screening component is mounted on the screening base, the screening column is inclinedly mounted on the feed end of the first screening component, the screening belt is movably mounted inside the screening base, and the driving component is mounted on the screening base and connected to the screening belt through the transmission components.

[0009] Optionally, the screening belt includes a screening chain arranged in parallel, a screening screen is provided on the screening chain, the transmission component includes a transmission shaft, a cam and a reset component, the transmission shaft is rotatably disposed in the screening seat, the cam is fixedly disposed on the transmission shaft, the driving component is connected to the transmission shaft, and the cam is connected to the lower end face of the screening chain through the reset component, wherein the initial positions of a plurality of cams have a phase difference along the conveying direction.

[0010] Optionally, the first screening component further includes a second screening port, which is disposed below the screening seat, and the bottom of the screening column is positioned above the second screening port.

[0011] Optionally, the second screening component includes a screening station, a screening frame, and a third screening port. The screening station is located on one side of the second screening component, the screening frame is located inside the screening station, the first screening port is connected to the screening frame, and the third screening port is located below the screening frame.

[0012] Optionally, the screening frame is inclined in a stepped manner, each step including several screening plates arranged linearly, and a screening gap is provided between adjacent screening plates.

[0013] Optionally, the screening frame includes a plurality of screening rods, and the screening plate is movably mounted on the screening rods by a torsion spring.

[0014] Optionally, a conveyor belt is provided below the second and third screening ports, and the crushing assembly includes a toothed roll crusher or a compound crusher.

[0015] The beneficial effects that this invention can achieve are as follows: This invention solves the problem in existing integrated crushing and screening systems where viscous material clumps after crushing directly enter the screening equipment without treatment, leading to frequent screen blockage and short continuous operation time of the system. This is achieved by adding a screen shaking component consisting of a support frame, a screen shaking tube, a screen shaking frame, and movable parts to the crushing assembly. The upper end of the screen shaking tube is connected to the lower end of the crushing assembly, and the lower end is connected to the screen shaking frame. The screen shaking frame is suspended and supported on the support frame fixed to the machine frame through the movable parts. At the same time, several screen shaking holes are opened at the lower end of the screen shaking tube. When the raw materials are crushed by the crushing components, they form clumps of material in an adhered state. These clumps are discharged from the lower end of the crushing components and fall into the vibrating screen tube. During their descent, they come into contact with and impact the vibrating screen frame. Since the vibrating screen frame is suspended from the support frame via movable parts, the impact force generated by the falling material clumps causes the vibrating screen frame to tilt relative to the support frame in multiple directions via the movable parts, resulting in a continuous, disordered vibration state. The lower end of the vibrating screen tube is connected to the vibrating screen frame and vibrates synchronously with it. Thus, the material clumps inside the vibrating screen tube are simultaneously subjected to the impact from the vibrating screen frame and the vibration from the vibrating screen tube wall, gradually breaking up the clumps of material. The material is dispersed into granules or small lumps. The dispersed fine particles can pass through the shaking screen holes at the bottom of the shaking screen tube and fall directly into the first screening component. Large lumps that cannot be dispersed in time are repeatedly impacted by the shaking action of the shaking screen frame until they are dispersed and discharged through the shaking screen holes. This allows the material that originally existed in the form of adhering clumps to undergo preliminary shaking separation before entering the first screening component. This avoids a large amount of clumps of material directly impacting and adhering to the screening surface of the first screening component, thereby effectively reducing the clogging phenomenon on the screening surface. This allows the screening components of the entire system to maintain continuous and stable operation for a longer period of time, improving screening efficiency and processing capacity. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the system structure in an embodiment of the present invention; Figure 2 This is a partial structural diagram of the system lacking a breaking component in an embodiment of the present invention; Figure 3 This is a partial structural diagram of the system in an embodiment of the present invention, excluding the crushing group and the first screening component; Figure 4 This is a schematic diagram of the structure of the crushing component in an embodiment of the present invention; Figure 5 This is a cross-sectional structural diagram of the crushing component in an embodiment of the present invention; Figure 6 This is a partial structural diagram of the shaking screen component in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the first screening component in an embodiment of the present invention; Figure 8 This is a partial structural diagram of the first screening component in an embodiment of the present invention; Figure 9 This is another partial structural schematic diagram of the first screening component in an embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of the reset member in an embodiment of the present invention; Figure 11 Appendix of the present invention Figure 1 A magnified structural diagram of A in the diagram.

[0017] Figure label: 1-Frame, 2-Crushing assembly, 3-First screening assembly, 4-Second screening assembly; 21- Crushing component, 22- Shaking screen component; 221-Support frame, 222-Shaking screen tube, 223-Shaking screen frame, 224-Moving part, 225-Shaking screen hole, 226-Shaking screen block, 227-Shaking screen wheel; 2241 - Movable seat, 2242 - Flexible element; 31-First screening port, 32-Screening seat, 33-Screening column, 34-Screening belt, 35-Drive component, 36-Transmission component, 37-Second screening port; 341 - Screening chain, 342 - Screening mesh; 361-Drive shaft, 362-Cam, 363-Reset component; 41-Screening station, 42-Screening frame; 421-Sieve plate.

[0018] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0021] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0023] Please refer to the attached examples for details. Figures 1 to 11 This embodiment provides an integrated crushing and screening system, the system comprising:

[0024] Crushing component 2, which is mounted on frame 1; The first screening component 3 is mounted on the frame 1, and the feed end of the first screening component 3 is connected to the discharge end of the crushing component 2. The first screening component 3 includes a first screening port 31. The second screening component 4 has its feed end connected to the first screening port 31. The crushing assembly 2 includes a crushing component 21 and a vibrating screen component 22. The vibrating screen component 22 includes a support frame 221, a vibrating screen tube 222, a vibrating screen frame 223, and a movable part 224. The support frame 221 is fixedly connected to the frame 1. The vibrating screen tube 222 is connected to the lower end face of the crushing component 21. The vibrating screen frame 223 is mounted on the support frame 221 via the movable part 224. The vibrating screen tube 222 is also connected to the vibrating screen frame 223. The lower end of the vibrating screen tube 222 is provided with a plurality of vibrating screen holes 225. After the raw material is crushed by the crushing component 2, it falls to the shaking screen tube 222 and comes into contact with the shaking screen frame 223, so that the shaking screen frame 223 generates an inclined displacement relative to the support frame 221 through the moving part 224, so as to achieve shaking separation of the raw material through the shaking screen hole 225.

[0025] It should be noted that the system includes a frame 1 and a crushing component 2, a first screening component 3, and a second screening component 4 mounted on the frame 1. The crushing component 2 is fixedly mounted on the upper part of the frame 1, and the first screening component 3 is mounted below the crushing component 2. The feed end of the first screening component 3 is directly or indirectly connected to the discharge end of the crushing component 2, so that the material processed by the crushing component 2 can fall directly into the first screening component 3 by its own gravity. The first screening component 3 has a first screening port 31 on its side. The feed end of the second screening component 4 is connected to the first screening port 31. The remaining material after screening by the first screening component 3 enters the second screening component 4 through the first screening port 31 for further screening.

[0026] It should also be noted that the crushing assembly 2 mainly consists of two parts: a crushing component 21 and a vibrating screen component 22. The crushing component 21 is fixedly installed on the frame 1 and can be a commonly used ore crushing equipment such as a toothed roll crusher or a compound crusher. Its function is to crush large pieces of raw material into smaller material clumps. The vibrating screen component 22 is located below the crushing component 21 and specifically includes a support frame 221, a vibrating screen tube 222, a vibrating screen frame 223, and movable parts 224. The support frame 221 is a frame structure that is fixedly connected to the frame 1 by high-strength welding or bolts. The frame 1 can also be a multi-layer structure to provide a stable installation foundation for the vibrating screen component 22. The vibrating screen tube 222 is a tubular structure with open ends. Its upper opening is connected to and fixedly connected to the lower discharge port of the crushing component 21, allowing the crushed material clumps to directly enter the vibrating screen tube 222. The lower end of the screen tube 222 has several screen holes 225. These screen holes 225 can be round holes, elongated holes or grid holes. The hole diameter is designed according to the actual screening requirements. They are used to shake and disperse fine particulate materials and make them pass through and fall.

[0027] Similarly, the vibrating screen tube 222 can be made of high-molecular elastic materials, such as polyurethane tubes, wear-resistant rubber tubes, or nylon-reinforced tubes. Its hardness can be adjusted within a wide range through formulation, ensuring sufficient rigidity to maintain the channel shape while allowing for smooth elastic deformation under the influence of the vibrating screen frame 223. Wear-resistant rubber tubes utilize the high elasticity of natural or synthetic rubber to absorb vibration and impact during repeated bending, reducing noise. Simultaneously, the rubber material has a certain anti-adhesion effect on sticky components in the material, reducing material residue on the tube wall. Nylon-reinforced tubes or fiber-braided reinforced composite tubes embed fiber reinforcement layers into the polymer matrix, ensuring the required flexibility while improving tensile strength and compressive strength, preventing excessive stretching or breakage during material impact and vibration.

[0028] Specifically, the vibrating screen frame 223 is installed at the lower middle end of the vibrating screen tube 222, and is movably connected to the support frame 221 via the movable part 224. Simultaneously, the vibrating screen tube 222 is also connected to the vibrating screen frame 223, allowing the vibrating screen frame 223 to drive the lower end of the vibrating screen tube 222 to move synchronously when subjected to force. A vibrating screen block 226 is provided in the central area of ​​the vibrating screen frame 223. The shape of the vibrating screen block 226 can be conical, hemispherical, or frustum-shaped, and its surface hardness is higher than that of ordinary steel to withstand long-term impact and wear from materials. Around the outer periphery of the vibrating screen block 226, multiple vibrating screen wheels 227 are evenly arranged at intervals along the circumferential direction. Each vibrating screen wheel 227 is inclined relative to the horizontal plane, with an inclination angle typically between 15 and 45 degrees, ensuring that material clumps falling from different directions can impact the vibrating screen wheels 227 or the vibrating screen block 226 at a certain angle.

[0029] More specifically, the movable component 224 includes several movable seats 2241 and several elastic components 2242. The movable seats 2241 are mounted on the end face of the support frame 221. Each movable seat 2241 is connected to the support frame 221 through a ball joint structure, that is, the movable seat 2241 and the support frame 221 are engaged by a universal ball joint, allowing the movable seat 2241 to swing around the center of the ball in any direction at a limited angle on the end face of the support frame 221. The upper end of each movable seat 2241 is fixedly connected to the lower end of an elastic component 2242. The upper end of the elastic component 2242 is fixedly connected to the bottom surface of the shaking screen frame 223. The elastic component 2242 can be a compression spring, rubber spring, or air spring, etc., with elastic recovery capability. Based on the above structure, the shaking screen frame 223 is suspended above the support frame 221, and a certain distance is maintained between adjacent movable components 224, so that the shaking screen frame 223 has multiple support points in the horizontal plane.

[0030] Based on the above structure, in actual operation, the raw materials to be screened first enter the crushing component 21. After crushing, they form material clumps with a certain degree of adhesion. These material clumps are discharged from the lower end of the crushing component 21 and fall into the vibrating screen tube 222. During the fall, they impact the vibrating screen blocks 226 and vibrating screen wheels 227 on the vibrating screen frame 223 at a certain speed. Because the vibrating screen wheels 227 are inclined, the impact force generated when the material clumps collide includes not only a vertical component but also a horizontal component. This horizontal component causes the vibrating screen frame 223 to have a horizontal offset tendency. Meanwhile, material clumps at different locations continuously impact different shaking screen plates 227 at different angles and with different forces, causing the shaking screen frame 223 to be subjected to a resultant force with constantly changing direction and magnitude. Under the combined action of this resultant force and the elastic restoring force of the elastic element 2242, the shaking screen frame 223 generates a multi-directional tilting displacement relative to the support frame 221 through the ball joint structure of the movable seat 2241. That is, the upper surface of the shaking screen frame 223 continuously tilts in different directions and is accompanied by up and down vibration, forming a continuous disordered shaking state.

[0031] During the shaking process, the shaking screen frame 223 drives the lower end of the shaking screen tube 222 connected to it to shake synchronously. The material clumps inside the shaking screen tube 222 are gradually broken up and dispersed under the continuous impact of the shaking screen block 226, the shaking screen wheel 227, and the shaking action of the wall of the shaking screen tube 222. The material that was originally stuck together is separated into granules or small pieces. When the size of the dispersed material particles is smaller than the aperture of the shaking screen hole 225, it passes through the shaking screen hole 225 and falls to the feed end of the first screening component 3. A very small amount of large pieces of material that cannot be dispersed in time will continue to be impacted by the continuous shaking action of the shaking screen frame 223 until they are dispersed or directly discharged from the lower opening of the shaking screen tube 222. Through the above process, the adhering material clumps discharged from the crushing component 21 have completed the initial shaking separation before entering the first screening component 3, avoiding the situation where a large amount of clumps of material directly enter the screening equipment and cause screen blockage, thereby extending the continuous running time of the screening component and improving the screening efficiency and processing capacity of the entire system.

[0032] In this embodiment, the geometric center of the shaking screen frame 223 is on the extension line of the central axis of the crushing component 2. A shaking screen block 226 is provided on the geometric center of the shaking screen frame 223. A plurality of shaking screen wheels 227 are evenly distributed on the outer periphery of the shaking screen block 226, and the shaking screen wheels 227 are inclined.

[0033] Understandably, the overall shape of the shaking screen frame 223 is a cross-shaped frame structure or a circular disc structure. Its geometric center is located precisely on the extended line directly below the central axis of the crushing component 2. That is, the intersection of a straight line drawn vertically downwards from the center of the discharge port at the lower end of the crushing component 21 and the plane of the shaking screen frame 223 is the geometric center of the shaking screen frame 223. This effectively ensures that the material clump discharged from the crushing component 21 can directly hit the central area of ​​the shaking screen frame 223 during its descent, rather than deviating to one side of the shaking screen frame 223, thereby ensuring the uniformity and stability of the subsequent impact dispersion process.

[0034] A shaking screen block 226 is fixedly installed at the geometric center of the shaking screen frame 223. The shaking screen block 226 serves as the first impact point when the material clump falls. Its shape can be set as a cone, a square pyramid, or a hemisphere, etc., with an upward convex shape. The material is usually high manganese steel, alloy steel, or wear-resistant steel with surface quenching treatment to withstand the long-term, high-frequency direct impact of the material clump. The bottom of the shaking screen block 226 can be firmly connected to the geometric center of the shaking screen frame 223 by welding or bolting. During the shaking of the shaking screen frame 223, the shaking screen block 226 moves synchronously with the shaking screen frame 223.

[0035] Multiple screen-shaking wheels 227 are evenly spaced along the circumference of the screen-shaking block 226. These screen-shaking wheels 227 are arranged radially around the screen-shaking block 226. Specifically, if six screen-shaking wheels 227 are arranged circumferentially, the central angle between two adjacent screen-shaking wheels 227 is 60 degrees; if eight are arranged, the central angle between two adjacent wheels is 45 degrees. The screen-shaking wheels 227 are usually made of steel plate, with a thickness generally between 5 mm and 15 mm, and their width extends radially outward from the outer edge of the screen-shaking block 226. Each screen-shaking wheel 227 is inclined relative to the horizontal plane, forming an angle with the horizontal plane, which is usually set in the range of 15 degrees to 45 degrees. The tilt direction can be such that one side of the wheel is higher than the other, the inner side of the wheel is higher than the outer side, or the front side of the wheel is higher than the rear side. In this way, when the material clump falls from above, it will hit the tilted surface of the vibrating screen wheel 227 at an oblique angle, instead of hitting the horizontal plane vertically.

[0036] After the material agglomeration is discharged from the lower end of the crushing component 21, it falls vertically along the central axis of the crushing assembly 2 under the action of gravity. It first impacts the top of the vibrating screen block 226 located at the geometric center. Since the top of the vibrating screen block 226 is convex, the material agglomeration is bounced outwards after the impact, dispersing into multiple smaller pieces of material or particles, and splashing towards the vibrating screen wheels 227 in all directions. The initially dispersed material then impacts the vibrating screen wheels 227 at different positions around it. Since each vibrating screen wheel 227 is inclined, the impact force generated by the material impact is decomposed into a vertically downward component and a horizontal component. The horizontal component points to different sides of the vibrating screen frame 223 depending on the impact position and the inclination direction of the wheel, thereby subjecting the vibrating screen frame 223 to thrust of varying magnitudes in different directions in the horizontal plane. Because the vibrating screen plates 227 are evenly spaced, the material clump will hit the corresponding vibrating screen plate 227 no matter which direction it deviates from during the fall, instead of passing directly through the gaps between the plates. This ensures the continuity and comprehensiveness of the impact.

[0037] More specifically, when material impacts one side of the vibrating screen wheel 227, that side experiences downward pressure and horizontal thrust, causing the vibrating screen frame 223 to tilt to that side. Immediately afterwards, the next clump of material may impact the wheel on the other side, causing the vibrating screen frame 223 to swing back in the opposite direction. Because the trajectory of the material clumps is somewhat random, the direction and magnitude of the impact force on the vibrating screen frame 223 are constantly changing, resulting in a continuous state of disordered vibration. The placement of the vibrating screen block 226 at its geometric center ensures that regardless of which direction the vibrating screen frame 223 tilts, the material clumps can accurately land on the vibrating screen block 226 and be effectively bounced off, preventing material from directly hitting the edge of the vibrating screen frame 223 or leaking through the gaps in the vibrating screen frame 223. The inclined arrangement of the vibrating screen wheel 227 ensures that each impact generates a horizontal component force that causes the vibrating screen frame 223 to tilt. If the wheel were horizontal, the material would only generate a vertical impact force, making it difficult to effectively drive the vibrating screen frame 223 to swing horizontally, thus significantly reducing the amplitude and dispersion effect of the vibration. Through this structure, the material clumps are fully broken up by the continuous impact and bounce of the vibrating screen block 226 and the vibrating screen wheel 227, and the adhered clumps are effectively separated, creating favorable conditions for subsequent screening through the vibrating screen holes 225.

[0038] In this embodiment, the movable component 224 includes a plurality of movable seats 2241 and a plurality of elastic components 2242. The movable seats 2241 are ball-jointed to the end face of the support frame 221, and the two ends of the elastic components 2242 are fixedly connected to the shaking screen frame 223 and the movable seats 2241, respectively.

[0039] It is understood that a ball head is embedded in the bottom of the movable seat 2241, and a corresponding ball socket is formed on the end face of the support frame 221. The ball head is installed in the ball socket to form a ball joint connection, allowing the movable seat 2241 to swing around the center of the ball in any direction with a limited angle on the end face of the support frame 221. That is, the upper end of the movable seat 2241 can shift in all directions in the horizontal plane, including forward, backward, left, and right, and can also rotate to a certain extent. The elastic element 2242 is vertically arranged between the movable seat 2241 and the shaking screen frame 223. Its lower end is fixed to the upper end face of the movable seat 2241 by welding, bolt connection, or snap-fit, and its upper end is fixed to the bottom surface of the shaking screen frame 223 by welding or bolt connection. The elastic element 2242 can be made of various components with elastic recovery capabilities, such as metal compression springs, disc springs, rubber springs, polyurethane elastic blocks, or air springs.

[0040] It is also understandable that several movable seats 2241 are evenly distributed circumferentially along the end face of the support frame 221. For example, one movable seat 2241 is arranged at each of the four corners of the support frame 221, or one is arranged every ninety degrees on the circumference of the circular support frame 221. Correspondingly, an elastic element 2242 is arranged above each movable seat 2241. These elastic elements 2242 together suspend and support the shaking screen frame 223 above the support frame 221. When the shaking screen frame 223 is stationary, the compression of each elastic element 2242 is basically the same, so that the shaking screen frame 223 maintains a roughly horizontal initial posture. When the material clump falls and impacts the shaking screen block 226 and shaking screen wheel 227 on the shaking screen frame 223, the shaking screen frame 223 is subjected to an eccentric load, pressing down to one side. The elastic element 2242 below that side is further compressed, while the elastic element 2242 on the opposite side elongates or its compression decreases. The movable seat 2241 then swings within the ball socket to adapt to this tilt change. Since the movable seat 2241 can rotate around the center of the ball in any direction, the shaking screen frame 223 can not only tilt in one direction, but also generate compound multi-directional tilt displacement under the impact force in different directions. That is, the upper end face of the shaking screen frame 223 can continuously change its tilt direction in space in an irregular manner. When the impact force disappears, the compressed elastic element 2242 releases its stored energy, pushing the shaking screen frame 223 back to its initial position, preparing for the next impact.

[0041] Based on the above structure, the movable component 224 provides stable multi-point suspension support for the shaking screen frame 223, and allows the shaking screen frame 223 to generate free multi-directional tilting displacement when subjected to disordered impacts from materials. Simultaneously, the restoring force of the elastic component 2242 maintains the continuity of the shaking. Furthermore, in some preferred embodiments, a limiting component, such as a rod-like structure hinged at both ends, can be provided between the shaking screen frame 223 and the support frame 221 to limit the maximum rotation angle, thus preventing direct contact between the shaking screen frame 223 and the support frame 221, and also preventing excessive movement distance of the shaking screen tube 222.

[0042] In this embodiment, the first screening component 3 includes a screening seat 32, a screening column 33, a screening belt 34, a driving component 35, and a plurality of transmission components 36. The screening seat 32 is fixedly mounted on the frame 1. The feed end of the first screening component 3 is mounted on the screening seat 32. The screening column 33 is inclinedly mounted on the feed end of the first screening component 3. The screening belt 34 is movably mounted inside the screening seat 32. The driving component 35 is mounted on the screening seat 32 and connected to the screening belt 34 through the transmission components 36.

[0043] In this embodiment, the screening belt 34 includes a screening chain 341 arranged in parallel, and a screening screen 342 is provided on the screening chain 341. The transmission component 36 includes a transmission shaft 361, a cam 362, and a reset component 363. The transmission shaft 361 is rotatably disposed in the screening seat 32. The cam 362 is fixedly disposed on the transmission shaft 361. The driving component 35 is connected to the transmission shaft 361. The cam 362 is connected to the lower end face of the screening chain 341 through the reset component 363. The initial positions of several cams 362 have a phase difference along the conveying direction.

[0044] In this embodiment, the first screening component 3 further includes a second screening port 37, which is disposed below the screening seat 32, and the bottom of the screening column 33 is positioned above the second screening port 37.

[0045] It is understood that the screening seat 32 is a box-shaped or frame structure with an open top, which is fixedly installed on the frame 1 by bolts or welding. Its interior forms a working space for material to pass through and for screening operations. The open top of the screening seat 32 is the feed end of the first screening component 3, which is directly opposite to the discharge end of the shaking screen component 22, so that the material after initial shaking and separation by the shaking screen component 22 can fall directly into the screening seat 32. At the feed end of the screening seat 32, that is, in the area above the discharge port of the vibrating screen tube 222, a screening column 33 is inclinedly arranged. The screening column 33 is composed of multiple parallel bars. These bars can be made of round steel, square steel or flat steel. A fixed gap distance is maintained between two adjacent bars. This gap distance is determined according to the actual screening particle size requirements, usually between 20 mm and 80 mm. The screening column 33 is inclined along the direction of material falling, and the inclination angle is generally between 10 degrees and 30 degrees, so that the material falling on the screening column 33 can slide down the surface of the bars under the action of gravity.

[0046] The screening belt 34 is movably installed within the internal space of the screening base 32, located below the screening column 33. The screening belt 34 consists of two or more parallel screening chains 341. The arrangement direction of these screening chains 341 is consistent with the material conveying direction. Its structure can refer to common roller chains or sleeve chains, that is, a series of chain links connected end to end by pins to form a closed ring chain with a certain length and width. Between adjacent screening chains 341, screening mesh 342 is laid and fixed. The structure of screening mesh 342 is preferably composed of many metal rings interlocked and woven into a mesh plane. This structure has a certain degree of flexibility to move with the screening chains 341, and can also support, screen, and even secondary crush the material during the conveying process. The mesh size of screening mesh 342 is determined according to the target screening particle size, and is usually smaller than the gap between the bars of screening column 33.

[0047] It is also understood that a drive unit 35 is installed on one or both ends of the screening base 32. The drive unit 35 can be a combination of an electric motor and a reducer, or a hydraulic motor or other rotary drive device. The output end of the drive unit 35 is connected to the transmission unit 36. The transmission unit 36 ​​includes a drive shaft 361, a cam 362 and a reset unit 363. The drive shaft 361 is arranged horizontally perpendicular to the material conveying direction and is rotatably mounted on the side wall of the screening base 32 through a bearing seat. There can be one or more drive shafts 361, which are arranged at intervals along the conveying direction of the screening belt 34. One or more cams 362 are fixedly installed on each drive shaft 361. The outer contour of the cam 362 is elliptical or has a raised eccentric shape. The drive member 35 is connected to the drive shaft 361 through chain drive, belt drive or gear drive, and drives the drive shaft 361 to rotate around its own axis. The upper contour surface of the cam 362 is in contact or connected to the lower end face of the screening chain 341 through the reset member 363. The reset member 363 can be an elastic element such as a tension spring, compression spring or leaf spring. One end of the reset member is connected to or abuts against the cam 362, and the other end is connected to the lower end face of the screening chain 341, so that the screening chain 341 is always subjected to an upward elastic thrust or pull.

[0048] Based on the above structure, on several drive shafts 361 arranged along the conveying direction of the screening belt 34, there is a phase difference in the initial installation position of each cam 362. Looking along the conveying direction, the cam 362 on the first drive shaft 361 is in the position where its protrusion faces upward. Then, the cam 362 on the second drive shaft 361 may be in a position where its protrusion deviates from the upward position by 30°, 60° or 90°, etc. The third one is offset from the first two by a certain angle. This phase difference setting makes it possible that when the drive unit 35 starts and drives all drive shafts 361 to rotate synchronously, each cam 362 will sequentially lift different sections of the screening chain 341, and the screening belt 34 will exhibit a continuous wave-like undulating movement state in the conveying direction.

[0049] After initial processing by the shaking screen component 22, materials that remain clumped into larger lumps first fall onto the inclined screening column 33. Due to the small gaps between the bars of the screening column 33, the large material lumps cannot pass through the gaps and slide downwards along the inclined screening column 33 under the influence of gravity, eventually being discharged from the bottom of the screening column 33. Below the screening seat 32, directly below the bottom of the screening column 33, a second screening port 37 is provided. The large materials sliding down from the screening column 33 are directly discharged from the first screening component 3 through the second screening port 37, entering the subsequent large material collection or return processing stage.

[0050] The small pieces of material that have already dispersed, as well as the fine particles that fall directly from the vibrating screen component 22, pass through the gaps in the bars of the screening column 33 and fall onto the screening belt 34 below. The screening belt 34 moves along the conveying direction under the drive component 35. At the same time, under the combined action of the drive shaft 361, the cam 362 with phase difference, and the reset component 363, the screening chain 341 and the screening screen 342 continuously generate wave-like up-and-down undulations during the movement. While the material is conveyed forward on the screening screen 342 of the screening belt 34, it is subjected to the vibration and turbulence of the wave-like undulation motion. Finer particles pass through the mesh of the screening screen 342 and fall, while larger particles are continued to be conveyed forward until they are discharged from the first screening port 31 at the end of the screening belt 34 and enter the second screening component 4. This undulating conveying method not only realizes the horizontal conveying of materials, but also completes synchronous screening during the conveying process, so that the first screening component 3 has the dual functions of primary sorting and fine screening. The inclined setting of the screening column 33 and its cooperation with the second screening port 37 enable large pieces of material to be pre-separated before entering the screening belt 34, avoiding the impact damage or blockage of the screening screen 342 caused by excessively large material clumps, thus improving the system's processing capacity and operational stability.

[0051] In this embodiment, the second screening component 4 includes a screening station 41, a screening frame 42, and a third screening port. The screening station 41 is disposed on one side of the second screening component 4, the screening frame 42 is disposed inside the screening station 41, and the first screening port 31 is connected to the screening frame 42. The third screening port is disposed below the screening frame 42.

[0052] In this embodiment, the screening frame 42 is inclined in a stepped manner, each step includes a plurality of screening plates 421 arranged linearly, and a screening gap is provided between two adjacent screening plates 421.

[0053] In this embodiment, the screening frame 42 includes a plurality of screening rods, and the screening plate 421 is movably mounted on the screening rods by a torsion spring.

[0054] In this embodiment, a conveyor belt is provided below the second screening port 37 and the third screening port, and the crushing component 2 includes a toothed roll crusher or a compound crusher.

[0055] Understandably, the compound crusher is preferably a screenless, adjustable fine crushing device. Its crushing chamber consists of an upper vertical impact crushing zone and a lower hammer crushing zone. The crushing rotor is equipped with hammers and impact plates. After the material enters from the upper feed inlet, it is successively subjected to high-speed impact from the hammers, multiple rebound crushing by the impact plates, and mutual collision between materials, and finally discharged from the lower discharge outlet as a uniformly sized fine crushed material mass. The compound crusher has a large crushing ratio and adjustable discharge particle size, which can, to a certain extent, help avoid clogging caused by wet materials during the crushing process, thus forming a good match with the shaking pretreatment function of the shaking screen component 22. In addition, the compound crusher has a compact structure and stable operation, and can be directly hoisted onto the frame 1 and connected to the upper end of the shaking screen tube 222.

[0056] Similarly, the toothed roll crusher consists of two opposing, synchronously rotating crushing toothed rolls. Crushing teeth are staggered on the circumference of the two rolls. The raw material falls between the two rolls from the upper feed inlet and is gripped by the rotating teeth, subjected to splitting and compressing forces, breaking the material into smaller particle sizes before being discharged from the lower outlet. The discharge particle size of the toothed roll crusher can be controlled by adjusting the gap between the two rolls to accommodate raw materials of different hardness and particle size. Because the toothed roll crusher uses a splitting crushing principle rather than impact crushing, it produces less over-crushing during the crushing process. Furthermore, the toothed roll crusher operates smoothly with minimal vibration and can be directly fixed to the frame 1 and connected to the upper end of the vibrating screen tube 222.

[0057] It is also understandable that the screening station 41 is a box structure or frame enclosure structure fixedly installed on one side of the frame 1. Its function is to provide a relatively closed screening operation space for the screening rack 42, to prevent materials from splashing outward during the screening process, and to facilitate the collection of undersize materials falling from the screening rack 42. The upper part of the screening station 41 is provided with a feeding channel that connects to the first screening port 31. The material discharged from the end of the screening belt 34 of the first screening component 3 directly enters the interior of the screening station 41 through the first screening port 31. The lower part of the screening station 41 is provided with a third screening port (not shown in the figure), which is used to collect and discharge the final undersize material after screening by the screening rack 42.

[0058] The screening frame 42 is installed inside the screening station 41 and is inclined in a stepped manner. Specifically, the screening frame 42 consists of multiple stepped layers arranged sequentially along the inclined direction. Each step maintains a certain inclination angle relative to the horizontal plane, which is usually between 15 and 35 degrees, allowing the material to flow down the screening frame 42 step by step under the action of gravity. Several screening plates 421 are arranged linearly on each stepped layer. These screening plates 421 can be rectangular steel plates, wear-resistant alloy plates, or cast iron plates with hardened surfaces. Their surfaces extend along the width direction of the screening frame 42. The screening plates 421 are arranged end to end or in a row with very small spacing to form the bearing surface of that step. There are screening gaps between two adjacent steps and between two adjacent screening plates 421 in the same step. The width of the gap is determined according to the target particle size to be screened, usually between five and thirty millimeters. Material particles smaller than the gap width fall through the gap under the action of gravity, while materials larger than the gap width continue to stay on the surface of the screening plate 421 and flow down to the next step in the inclined direction.

[0059] The screening frame 42 also includes several screening rods arranged along the length of the screening frame 42. These screening rods can be round rods, square rods, or angle steel. Both ends of the rods are fixed to the frame of the screening frame 42 to form the basic structure supporting the screening plate 421. Each screening plate 421 is movably installed on the corresponding screening rod by a torsion spring. The torsion spring is sleeved on the outside of the screening rod. One end of the torsion spring is fixedly connected to or clamped to the screening rod, and the other end is fixedly connected to the bottom or side of the screening plate 421, so that the screening plate 421 can swing up and down within a certain angle range with the screening rod as the axis. A limiting structure is also provided below or to the side of the screening plate 421 to limit the maximum swing angle of the screening plate 421 and prevent the screening plate 421 from overturning and causing the material to get stuck in the screening gap and unable to fall. The limiting structure can be a stop block, a limiting pin, or a limiting plate fixed on the screening frame 42.

[0060] Material entering the screening station 41 through the first screening port 31 first falls onto the uppermost step of the screening frame 42. Under the action of gravity, it slides downwards along the surface of the inclined screening plate 421. When the material flows through the screening gap, particles smaller than the gap width pass directly through the gap, while larger lumps continue to move downwards. During this process, the sliding and rolling of the material on the screening plate 421 generates intermittent impacts and pressures, causing the screening plate 421 to swing slightly up and down on the screening rod via a torsion spring. This oscillation driven by the material's own gravity is similar to a shaking effect, which can help to remove fine powder or wet material adhering to the surface of the screening plate 421, preventing the screening gap from being blocked by sticky materials. Meanwhile, when large pieces of material fall from one step to the next, the impact on the next screening plate 421 will cause the screening plate 421 to swing downwards significantly. Then, under the restoring force of the torsion spring, it will quickly rebound. During this process, the shaking of the screening plate 421 will eject or shake off materials that may have been stuck in the screening gap, further ensuring the smooth flow of the screening gap.

[0061] The stepped arrangement of the screening frame 42 causes the material to experience multiple drops and tumbling during the screening process. Each time the material falls from one step to the next, its orientation and accumulation state change. Fine powder that was originally pressed at the bottom has the opportunity to be exposed to the upper layer and fall through the screening gaps, improving the thoroughness of screening. Finally, the fine particles that fall through the screening gaps at each level collect at the bottom of the screening station 41 and are discharged through the third screening port to enter the finished product collection or transfer stage. The relatively larger materials that fail to pass through the screening gaps are discharged from the outlet at the very end of the screening frame 42 and can be returned to the crushing component 2 for secondary crushing. Through the above structure, the second screening component 4 achieves a shaking screening effect with anti-clogging and self-cleaning function by relying solely on the gravity of the material and the elastic recovery of the torsion spring without the need for an additional vibrating motor or other active drive device. This reduces the system's energy consumption and maintenance costs, while the stepped multi-stage screening structure also ensures screening accuracy and processing efficiency.

[0062] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. An integrated crushing and screening system, characterized in that, The system includes: A crushing assembly, which is mounted on a frame; A first screening component is mounted on a frame, and the feed end of the first screening component is connected to the discharge end of the crushing component. The first screening component includes a first screening port. The second screening component has its feed end connected to the first screening port; The crushing assembly includes a crushing component and a vibrating screen component. The vibrating screen component includes a support frame, a vibrating screen tube, a vibrating screen frame, and movable parts. The support frame is fixedly connected to the machine frame. The vibrating screen tube is connected to the lower end face of the crushing component. The vibrating screen frame is mounted on the support frame through the movable parts, and the vibrating screen tube is also connected to the vibrating screen frame. The lower end of the vibrating screen tube is provided with several vibrating screen holes. After the raw material is crushed by the crushing component, it falls into the vibrating screen tube and comes into contact with the vibrating screen frame. This causes the vibrating screen frame to tilt relative to the support frame through the moving parts, so as to achieve the shaking separation of the raw material through the vibrating screen holes.

2. An integrated crushing and screening system according to claim 1, wherein, The geometric center of the shaking screen frame is on the extension line of the central axis of the crushing component. A shaking screen block is provided on the geometric center of the shaking screen frame. Several shaking screen wheels are evenly distributed on the outer periphery of the shaking screen block, and the shaking screen wheels are inclined.

3. An integrated crushing and screening system according to claim 2, wherein, The movable component includes several movable seats and several elastic components. The movable seats are ball-jointed to the end face of the support frame, and the two ends of the elastic components are fixedly connected to the shaking screen frame and the movable seats, respectively.

4. An integrated crushing and screening system according to claim 1, wherein, The first screening component includes a screening base, a screening column, a screening belt, a drive component, and several transmission components. The screening base is fixedly mounted on the frame. The feed end of the first screening component is mounted on the screening base. The screening column is inclinedly mounted on the feed end of the first screening component. The screening belt is movably mounted inside the screening base. The drive component is mounted on the screening base and connected to the screening belt through the transmission components.

5. An integrated crushing and screening system according to claim 4, wherein, The screening belt includes a screening chain arranged in parallel, and a screening screen is provided on the screening chain. The transmission component includes a transmission shaft, a cam, and a reset component. The transmission shaft is rotatably disposed in the screening seat. The cam is fixedly disposed on the transmission shaft. The driving component is connected to the transmission shaft. The cam is connected to the lower end face of the screening chain through the reset component. The initial positions of several cams have a phase difference along the conveying direction.

6. An integrated crushing and screening system as claimed in claim 4, wherein, The first screening component further includes a second screening port, which is located below the screening base, and the bottom of the screening column is positioned above the second screening port.

7. An integrated crushing and screening system according to claim 6, wherein, The second screening component includes a screening station, a screening frame, and a third screening port. The screening station is located on one side of the second screening component, the screening frame is located inside the screening station, the first screening port is connected to the screening frame, and the third screening port is located below the screening frame.

8. An integrated crushing and screening system according to claim 7, wherein, The screening frame is inclined in a stepped manner, and each step includes several screening plates arranged in a linear manner, with screening gaps between adjacent screening plates.

9. An integrated crushing and screening system according to claim 8, wherein, The screening frame includes several screening rods, and the screening plate is movably mounted on the screening rods by a torsion spring.

10. An integrated crushing and screening system according to claim 7, wherein, A conveyor belt is provided below the second and third screening ports, and the crushing assembly includes a toothed roll crusher or a compound crusher.

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