Sliding screen and screening and crushing assembly line
By designing a sliding screen and screening crushing production line, two-stage screening of materials is achieved, solving the problem of over-grinding in traditional pre-crushing screening processes, improving the block yield and resource utilization efficiency, extending equipment life, and optimizing the crushing process.
Patent Information
- Application Number
- CN202520153094.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-21
AI Technical Summary
Traditional pre-crushing screening processes result in over-crushing of ores and building materials, leading to low lump yield and reduced economic benefits.
Design a sliding screen and screening crushing production line, including a frame, a first screening component and a second screening component. The frame is set at an inclination, and the material moves under the action of gravity. It is screened in two stages by the first screening component and the second screening component. Fine particles are directly separated, and materials that need further crushing enter the crusher, thereby improving resource utilization efficiency.
It effectively avoids over-crushing, increases the yield of crushed particles, reduces the processing capacity of the crusher, extends the service life of the equipment, reduces energy consumption, increases the proportion of large particles after crushing, and optimizes product quality and process efficiency.
Smart Images
Figure CN223832839U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screening and crushing equipment technology, and in particular to a sliding screen and screening and crushing production line. Background Technology
[0002] In modern mining enterprises, mining equipment and machinery are crucial assets for production and operation, bringing significant economic benefits. However, in the processing of granular materials such as ores and building materials, traditional pre-crushing screening processes have certain limitations, leading to severe over-crushing, low lump yield, and reduced economic efficiency. Utility Model Content
[0003] The main purpose of this invention is to propose a sliding screen and screening and crushing production line, which aims to solve the problem of how to improve the material block yield.
[0004] To achieve the above objectives, this utility model proposes a sliding screen, which includes a frame, a first screening component, and a second screening component. The frame is inclined relative to a horizontal plane, and the two ends of the frame along a first direction are a feed end and a discharge end, respectively. The feed end is used to communicate with a chute, and the discharge end is used to communicate with a first feed inlet of a crusher. The first screening component and the second screening component are arranged sequentially along a second direction. The side of the first screening component away from the second screening component is used to contact the material. The first screening component is connected to the frame and forms at least two first screening holes with the frame. The second screening component is connected to the frame and forms at least two second screening holes with the frame. The first screening holes and the second screening holes communicate with each other. The first screening holes extend along the first direction, and the second screening holes extend along a third direction. Both the second direction and the third direction are perpendicular to the first direction and intersect each other.
[0005] In one embodiment, the first screening component includes a plurality of grid strips, which are spaced apart along the third direction. Each grid strip is connected to the frame and forms a plurality of the first screening holes with the frame. The first direction, the second direction, and the third direction are perpendicular to each other.
[0006] And / or,
[0007] The second screening component includes a plurality of crossbars, which are spaced apart along a first direction. Each crossbar is connected to the frame and forms a plurality of second screening holes with the frame. The first direction, the second direction, and the third direction are perpendicular to each other.
[0008] In one embodiment, the frame includes a frame body, a first fixing plate, and a second fixing plate. The two ends of the frame body along a first direction are the feed end and the discharge end, respectively. The first fixing plate is located at the feed end, and the second fixing plate is located at the discharge end. Both the first fixing plate and the second fixing plate are connected to the frame body. The first fixing plate is used to connect to the chute, and the second fixing plate is used to connect to the crusher. The first screening component is connected to the frame body and forms at least two first screening holes with the frame body. The second screening component is connected to the frame body and forms at least two second screening holes with the frame body.
[0009] In one embodiment, the angle A between the frame and the horizontal plane is defined as follows: 30°≤A≤60°.
[0010] Furthermore, this utility model also proposes a screening and crushing production line, which includes a chute, a crusher, a first pipe, and a sliding screen as described in any of the above technical solutions. The chute has an inlet and a first outlet, the first outlet being connected to the feed end. The crusher has a first feed port and a first discharge port, and the crusher is located below the discharge end so that the material leaving the discharge end can enter the first feed port under the action of gravity. The frame is connected to the chute, and the first pipe is disposed on the side of the frame away from the chute. The two ends of the first pipe are a second feed port and a second discharge port, respectively. The chute can communicate with the second feed port through the first screening hole and the second screening hole.
[0011] In one embodiment, the screening and crushing production line further includes a first flap gate. The chute includes a straight section and a first inclined section. The two ends of the straight section are the inlet and the first branching point, respectively. The two ends of the first inclined section are the first connection point and the first outlet, respectively. The straight section and the first inclined section are connected to communicate between the first branching point and the first connection point. The frame is connected to the first inclined section. The first flap gate is located at the first branching point. The first flap gate is rotatably installed on the inner wall of the first inclined section. The first flap gate can block or open the first branching point so that the first flap gate can prevent the material from sliding out of the first branching point or the first flap gate can avoid the material so that the material slides out of the first branching point to the first connection point.
[0012] In one embodiment, the screening and crushing production line further includes a first conveyor;
[0013] The first discharge port is positioned facing the first conveyor;
[0014] And / or,
[0015] The second discharge port is positioned facing the first conveyor.
[0016] In one embodiment, the chute further includes a second inclined section, and the screening and crushing production line further includes a roller screen and a second pipe. The straight section is provided with a second branch at the end away from the inlet. The two ends of the second inclined section are a second connection port and a second outlet, respectively. The straight section is connected to the second inclined section so that the second branch port communicates with the second connection port. The roller screen has a third feed inlet and a third discharge outlet. The roller screen is provided with screen holes. The third feed inlet communicates with the second outlet. The two ends of the second pipe are a fourth feed inlet and a fourth discharge outlet, respectively. The second pipe is located at the bottom of the roller screen. The second inclined section can communicate with the fourth feed inlet through the screen holes, and the fourth discharge outlet communicates with the second discharge outlet.
[0017] In one embodiment, the screening and crushing production line further includes a second flap gate located at the second bifurcation point. The second flap gate is rotatably mounted on the inner wall of the second inclined section. The second flap gate can block or open the second bifurcation point, so that the second flap gate can prevent the material from sliding out of the second bifurcation point or the second flap gate can avoid the material so that the material slides out of the second bifurcation point to the second connection port.
[0018] In one embodiment, the screening and crushing production line further includes a second conveyor, and the third discharge port is disposed toward the second conveyor.
[0019] In this embodiment of the invention, the first direction is the vertical direction, which is also the material flow direction. The frame is the basic structure of the entire sliding screen. The two ends of the frame along the vertical direction are the feed end and the discharge end, respectively. The frame is inclined relative to the horizontal plane, which helps the material move from the feed end to the discharge end under the action of gravity. The first screening component and the second screening component are responsible for classifying the material. The second direction is the front-back direction perpendicular to the material flow direction, which is also the direction in which the first screening component and the second screening component are arranged. The first screening component and the second screening component are arranged sequentially along the front-back direction. The first screening component is in direct contact with the material, while the second screening component is located behind it. Both the first screening component and the second screening component are connected to the frame. The first screening hole extends along the material flow direction, while the second screening hole extends along another third direction perpendicular to the material flow direction. The third direction is also perpendicular to the first direction, and the second direction and the third direction are intersected so that the first screening hole and the second screening hole are aligned. The screen can be interconnected, enabling two-stage screening of materials. Materials meeting specific size requirements can pass through the first and second screening holes sequentially. The specific screening process is as follows: materials enter the feed end from the chute. Due to the inclined frame, larger materials move from the feed end to the discharge end under their own gravity, directly reaching the first feed inlet of the crusher for crushing. Smaller materials, after being screened through the first screening hole, continue to be screened through the second screening hole. If the material cannot pass through the second screening hole, it enters the first feed inlet of the crusher through the discharge end along the vertical wall of the first screening hole. If the material can pass through the second screening hole, it falls from the second screening hole, thus achieving the purpose of material grading. The design of the sliding screen takes into account the connection with the chute and the crusher, which means that it can be easily integrated into existing production lines without significant modifications to existing facilities, improving the compatibility and flexibility of the sliding screen.This embodiment of the invention employs a sliding screen for pre-screening of materials, allowing fine particles to be directly separated and prevented from entering the crusher. This effectively avoids over-crushing, ensuring that only materials requiring further crushing enter the crusher. This improves resource utilization efficiency, significantly reduces the crusher's throughput and workload, extends equipment lifespan, and reduces maintenance frequency and costs. Furthermore, because fine particles are pre-screened, the material entering the crusher is more uniform and larger in size, which helps increase the proportion of large particles after crushing, thereby increasing the lump yield, reducing the amount of fine coal, and optimizing product quality and overall performance. The crushing process employs a first and a second screening assembly, allowing materials to undergo two screening processes within the same equipment. The first screening is completed by the first screening hole, allowing smaller materials to pass directly. The second screening performs a more refined classification of the materials that passed through the first screening hole. This dual-layer screening mechanism improves screening efficiency and reduces the amount of material requiring additional processing. The inclined frame design facilitates the natural flow of materials under gravity, moving them from the feed end to the discharge end. This not only simplifies the mechanical design but also reduces energy consumption, while ensuring that materials can smoothly enter the first feed inlet of the crusher for further processing or treatment. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of the sliding screen of this utility model;
[0022] Figure 2 This is a schematic diagram of another perspective of an embodiment of the sliding screen of this utility model;
[0023] Figure 3 This is a schematic diagram of the structure of an embodiment of the screening and crushing production line of this utility model.
[0024] Explanation of icon numbers:
[0025] 100. Sliding screen; 1. Frame; 11. Frame body; 111. Feed end; 112. Discharge end; 12. First fixed plate; 13. Second fixed plate; 2. First screening component; 21. Grid bar; 22. First screening hole; 3. Second screening component; 31. Crossbar; 32. Second screening hole;
[0026] 200. Screening and crushing production line; 210. Chute; 2101. Straight chute section; 21011. Inlet; 21012. First branch; 21013. Second branch; 2102. First inclined chute section; 21021. First connection port; 21022. First outlet; 2103. Second inclined chute section; 21031. Second connection port; 21032. Second outlet; 220. Crusher; 2201. First feed inlet; 22 02. First discharge port; 230. First pipeline; 2301. Second feed inlet; 2302. Second discharge port; 240. First flap gate; 250. First conveyor; 260. Roller screen; 2601. Third feed inlet; 2602. Third discharge port; 2603. Screen hole; 270. Second pipeline; 2701. Fourth feed inlet; 2702. Fourth discharge port; 280. Second flap gate; 290. Second conveyor.
[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0029] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, and back), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0030] Furthermore, if the embodiments of this utility model 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 use of "and / or" or "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 utility model.
[0031] In modern mining enterprises, mining equipment and machinery are crucial assets for production and operation, bringing significant economic benefits. However, in the processing of granular materials such as ores and building materials, traditional pre-crushing screening processes have certain limitations, leading to severe over-crushing, low lump yield, and reduced economic efficiency.
[0032] After careful investigation, the applicant discovered that currently, materials are directly fed into the crusher. This results in finely crushed materials also entering the crusher, increasing the crusher's ineffective workload and causing severe over-crushing. Over-crushing refers to the phenomenon where, during the crushing process, the product particle size is smaller than the lower limit of the separation particle size, leading to ineffective separation and enrichment. This phenomenon is a problem that needs to be avoided in the crushing process of industrial material pretreatment because it leads to the loss of both material and energy. Taking raw coal as an example, during the crushing process, raw coal lumps of all sizes enter the crusher simultaneously, resulting in increased crushing pressure, over-crushing of lump coal, and an increase in the amount of fine coal, leading to reduced economic efficiency.
[0033] The main purpose of this invention is to propose a sliding screen and screening and crushing production line to solve the problem of how to improve the material output rate.
[0034] Please see Figures 1 to 3In one embodiment of this utility model, the sliding screen 100 includes a frame 1, a first screening component 2, and a second screening component 3. The frame 1 is inclined relative to the horizontal plane. The two ends of the frame 1 along the first direction are a feed end 111 and a discharge end 112, respectively. The feed end 111 is used to communicate with the chute 210, and the discharge end 112 is used to communicate with the first feed port 2201 of the crusher 220. The first screening component 2 and the second screening component 3 are arranged sequentially along the second direction. The side of the first screening component 2 away from the second screening component 3 is used to contact the material. The first screening component 2 is connected to the frame 1 and forms at least two first screening holes 22 with the frame 1. The second screening component 3 is connected to the frame 1 and forms at least two second screening holes 32 with the frame 1. The first screening holes 22 and the second screening holes 32 communicate with each other. The first screening holes 22 extend along the first direction, and the second screening holes 32 extend along the third direction. The second direction and the third direction are both perpendicular to the first direction and are intersecting.
[0035] In this embodiment of the invention, the first direction is the vertical direction, which is also the material flow direction. The frame 1 is the basic structure of the entire sliding screen 100. The two ends of the frame 1 along the vertical direction are the feed end 111 and the discharge end 112, respectively. The frame 1 is inclined relative to the horizontal plane, which helps the material move from the feed end 111 to the discharge end 112 under the action of gravity. The first screening component 2 and the second screening component 3 are responsible for classifying the material. The second direction is the front-back direction perpendicular to the material flow direction, which is also the direction in which the first screening component 2 and the second screening component 3 are arranged. The first screening component 2 and the second screening component 3 are arranged sequentially in a front-to-back direction. The first screening component 2 directly contacts the material, while the second screening component 3 is located behind it. Both the first screening component 2 and the second screening component 3 are connected to the frame 1. The first screening hole 22 extends along the material flow direction, while the second screening hole 32 extends along a third direction perpendicular to the material flow direction. This third direction is also perpendicular to the first direction, and the second direction and the third direction are intersected to allow the first screening hole 22 and the second screening hole 32 to communicate, thereby achieving material separation. The two-stage screening of the material allows materials meeting specific size requirements to pass sequentially through the first screening hole 22 and the second screening hole 32. The specific screening process is as follows: the material enters the feed end 111 from the chute 210. Due to the inclined setting of the frame 1, larger-sized materials move from the feed end 111 to the discharge end 112 under their own gravity, thus directly reaching the first feed inlet 2201 of the crusher 220 for crushing. Smaller-sized materials continue to be screened through the first screening hole 22 and then through the second screening hole 32. If the material cannot pass through the second screening hole 32, the material will be screened through the first screening hole 22. If the material passes through the second screening hole 32, it will fall from the second screening hole 32, thus achieving the purpose of material grading. The design of the sliding screen 100 takes into account the connection with the chute 210 and the crusher 220, which means that it can be easily integrated into the existing production line without major changes to the existing facilities, thus improving the compatibility and flexibility of the sliding screen 100.
[0036] The technical solution of this utility model uses a sliding screen 100 to pre-screen materials, allowing fine particles to be directly separated and no longer entering the crusher 220. This effectively avoids over-crushing, ensuring that only materials requiring further crushing enter the crusher 220. This improves resource utilization efficiency, significantly reduces the throughput of the crusher 220, lowers its workload, extends equipment lifespan, and reduces maintenance frequency and costs. Furthermore, because fine particles are pre-screened, the material entering the crusher 220 is more uniform and larger in size. This helps increase the proportion of large particles after crushing, thereby increasing the lump yield, reducing the amount of fine coal, and optimizing product quality and the overall crushing process. The crushing process involves employing a first screening component 2 and a second screening component 3. Materials can undergo two screening processes within the same equipment. The first screening is completed by the first screening hole 22, allowing smaller materials to pass directly. The second screening performs a more refined classification of the materials that have passed through the first screening hole 22. This dual-layer screening mechanism improves screening efficiency and reduces the amount of material requiring additional processing. The inclined frame 1 facilitates the natural flow of materials under gravity, moving them from the feed end 111 to the discharge end 112. This not only simplifies the mechanical design but also reduces energy consumption, while ensuring that materials can smoothly enter the first feed inlet 2201 of the crusher 220 for further processing or treatment.
[0037] Please see Figure 1 and Figure 2In one embodiment, the first screening component 2 includes a plurality of grid strips 21, which are spaced apart along a third direction. Each grid strip 21 is connected to the frame 1 and forms a plurality of first screening holes 22 with the frame 1. The first direction, the second direction, and the third direction are perpendicular to each other. And / or, the second screening component 3 includes a plurality of crossbars 31, which are spaced apart along a first direction. Each crossbar 31 is connected to the frame 1 and forms a plurality of second screening holes 32 with the frame 1. The first direction, the second direction, and the third direction are perpendicular to each other. Specifically, in this embodiment, the second direction is the front-back direction, and the third direction is the left-right direction. By setting multiple grid strips 21, the first screening is achieved, ensuring that the material can be effectively screened according to the first screening holes 22 when moving in the up-down direction. The material is separated by size, allowing only materials smaller than or equal to the size of the first screening hole 22 to pass through. Multiple crossbars 31 are used to allow materials that have passed the first screening to undergo a second screening, further refining the classification. The spacing between the grid bars 21 and the crossbars 31 not only helps maintain smooth material flow but also prevents larger particles from getting stuck, reducing the possibility of blockage and ensuring continuous and stable operation of the equipment. Furthermore, the perpendicular design of the first, second, and third directions allows the sliding screen 100 to precisely control the material in three-dimensional space, achieving finer grading. In this embodiment, the number and spacing of the grid bars 21 and crossbars 31 can be adjusted according to actual needs to accommodate materials with different particle size distributions, thereby enhancing the application range and flexibility of the sliding screen 100.
[0038] According to an embodiment of the present invention, the first screening component 2 includes a plurality of grid strips 21, which are spaced apart along a third direction. Each grid strip 21 is connected to a frame 1 and forms a plurality of first screening holes 22 with the frame 1. The second screening component 3 includes a plurality of crossbars 31, which are spaced apart along a first direction. Each crossbar 31 is connected to a frame 1 and forms a plurality of second screening holes 32 with the frame 1. An angle is formed between the second direction and the third direction, and the angle is less than 90°. The material is pre-screened through the first screening holes 22 and the second screening holes 32.
[0039] In this embodiment, the diameters of all first screening holes 22 along the third direction are equal, and the diameters of all second screening holes 32 along the first direction are equal. That is, all first screening holes 22 have the same width in the left-right direction, and all second screening holes 32 have the same height in the up-down direction. This ensures that the material is subjected to consistent screening conditions when passing through all first screening holes 22 or all second screening holes 32. Regardless of its position, as long as the size is less than or equal to the hole diameter, it can pass through smoothly. This uniformity helps to maintain the consistency and reliability of the screening results, and also makes the particle size of the final product more uniform. This helps to maintain a stable and efficient production process to adapt to different production needs. Maintenance personnel can also more easily clean or replace damaged parts. In addition, if it is necessary to adjust the screening criteria, it is only necessary to change the spacing between two adjacent grid bars 21 or two adjacent crossbars 31. The operation is simple and easy to implement.
[0040] According to one embodiment of the present invention, the diameters of each first screening hole 22 along the third direction are not equal, and the diameters of each second screening hole 32 along the first direction are not equal. Through the first screening holes 22 and the second screening holes 32 with unequal diameters, the primary screening of materials is achieved.
[0041] In this embodiment, the grid bars 21 can be made of steel bars with a smooth surface. The upper and lower ends are welded to the frame 1. The number of steel bars can be selected according to the width of the frame 1 to adjust the aperture of the first screening hole 22. In this embodiment, there are twenty steel bars, which are evenly distributed in the left and right direction. The sliding screen 100 requires simple materials, has a simple structure, and is inexpensive. It does not require a driving device. The high-strength steel materials are all installed and fixed by welding, resulting in a tight connection and durability.
[0042] Please see Figure 1 and Figure 2In one embodiment, the frame 1 includes a frame body 11, a first fixing plate 12, and a second fixing plate 13. The two ends of the frame body 11 along a first direction are a feed end 111 and a discharge end 112, respectively. The first fixing plate 12 is located at the feed end 111, and the second fixing plate 13 is located at the discharge end 112. Both the first fixing plate 12 and the second fixing plate 13 are connected to the frame body 11. The first fixing plate 12 is used to connect to the chute 210, and the second fixing plate 13 is used to connect to the crusher 220. The first screening assembly 2 is connected to the frame body 11 and forms at least two first screening holes 22 with the frame body 11. The second screening assembly 3 is connected to the frame body 11 and forms at least two second screening holes 32 with the frame body 11. Specifically, the design of the first fixing plate 12 facilitates… The connection between the sliding screen 100 and the chute 210 allows the sliding screen 100 to be directly connected to the screening and crushing production line 200, ensuring that the material can flow smoothly from the chute 210 into the sliding screen 100 for screening. The design of the second fixing plate 13 facilitates the connection between the sliding screen 100 and the crusher 220, ensuring that the screened material can directly enter the crusher 220 for further processing, reducing intermediate steps, improving overall production efficiency, and simplifying the installation process by setting the first fixing plate 12 and the second fixing plate 13, improving the compatibility and safety of the sliding screen 100, extending its service life, reducing maintenance costs, and facilitating regular inspection and maintenance of the first fixing plate 12 and the second fixing plate 13, ensuring the long-term stable operation of the screening and crushing production line 200.
[0043] In this embodiment, the frame body 11 can be welded from high-strength steel to ensure that the frame 1 has sufficient structural strength and stability to withstand the impact and friction of materials; the first fixing plate 12 and the second fixing plate 13 can both be steel plates with a width of 10mm. The first fixing plate 12 is welded to the chute 210 and the frame body 11, and the second fixing plate 13 is welded to the crusher 220 and the frame body 11 to fix the entire sliding screen 100. The number of the first fixing plate 12 and the second fixing plate 13 can be selected according to the width of the frame 1 to ensure the stability of the connection; in this embodiment, there are six first fixing plates 12 and six second fixing plates 13, which are evenly distributed in the left and right direction.
[0044] Please see Figure 2In one embodiment, an angle A is defined between the frame 1 and the horizontal plane, such that 30°≤A≤60°. Specifically, by setting the angle A, the effect of gravity can be fully utilized, allowing the material to move smoothly from the feed end 111 to the discharge end 112 along the surface of the sliding screen 100. This angle range ensures that the material has sufficient inclination to flow quickly, preventing blockage due to excessive dwell time caused by too small an angle, and avoiding excessively large inclinations that would cause the material to jump and remain for too short a time, thus affecting the screening effect. This improves screening efficiency and screening accuracy. Furthermore, an appropriate inclination angle can reduce the direct impact of the material on the sliding screen 100, especially for larger particles. This not only reduces the risk of the first screening hole 22 and the second screening hole 32 being stuck or damaged, but also reduces the overall wear rate of the sliding screen 100, extending its service life.
[0045] Please see Figure 3This utility model also proposes a screening and crushing production line 200, which includes a chute 210, a crusher 220, a first pipe 230 and a sliding screen 100. The specific structure of the sliding screen 100 is as described in the above embodiments. Since this screening and crushing production line 200 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The chute 210 has an inlet 21011 and a first outlet 21022, which is connected to the feed end 111. The crusher 220 has a first feed inlet 2201 and a first discharge outlet 2202. The crusher 220 is located below the discharge end 112 so that the material leaving the discharge end 112 can enter the first feed inlet 2201 under the action of gravity. The frame 1 is connected to the chute 210. The first pipe 230 is set on the side of the frame 1 away from the chute 210. The two ends of the first pipe 230 are the second feed inlet 2301 and the second discharge outlet 2302, respectively. The chute 210 can be connected to the second feed inlet 2301 through the first screening hole 22 and the second screening hole 32. Specifically, the inlet 21011 of the chute 210 is used to receive unscreened material. The frame 1 is connected to the chute 210 so that the first outlet 21022 of the chute 210 is connected to the sliding screen. The feed end 111 of the 100 is connected to ensure that the material flows smoothly from the chute 210 into the sliding screen 100 for screening. The sliding screen 100 can pre-screen the material and separate materials of different particle sizes. The first feed port 2201 of the crusher 220 is located below the discharge end 112 of the sliding screen 100, so that larger particles leaving the discharge end 112 of the sliding screen 100 can directly enter the crusher 220 for crushing under the action of gravity. The first discharge port 2202 of the crusher 220 is used to discharge the crushed material. The first pipe 230 is set on the side of the frame 1 away from the chute 210. The chute 210 can be connected to the second feed port 2301 of the first pipe 230 through the first screening hole 22 and the second screening hole 32, allowing fine particles to pass through the sliding screen 100 and directly enter the first pipe 230, bypassing the crusher 220 and reducing unnecessary crushing.Through the double-layer screening mechanism of the sliding screen 100, the material is divided into two parts: one part consists of smaller particles that can directly enter the first pipe 230 through the first screening hole 22 and the second screening hole 32; the other part consists of larger particles that enter the crusher 220 for crushing. This diversion method improves the overall processing efficiency and reduces energy consumption. Since the fine particles have been pre-screened out, the material entering the crusher 220 is more uniform and larger in size, which effectively controls the amount and particle size of the material entering the crusher 220, improving the working efficiency and crushing effect of the crusher 220. This helps to increase the proportion of large particles, thereby increasing the final product lump yield, reducing the amount of fine coal, optimizing product quality, and improving the overall production efficiency of the screening and crushing production line 200. The sliding screen 100 enables preliminary screening and processing of materials in a more economical and efficient manner, enhancing the stability and reliability of the screening and crushing production line 200. It also significantly reduces the workload of the crusher 220, extends equipment life, and reduces maintenance costs. It avoids unnecessary secondary crushing of fine particles, eliminates over-crushing, protects the integrity of materials, and saves energy while reducing resource waste. The entire screening and crushing production line 200 features a compact design with tightly integrated components, making full use of limited space. It is particularly suitable for applications with limited space, such as mines and construction sites. The inclined sliding screen 100 allows materials to flow naturally under gravity, reducing the possibility of jamming or clogging and improving the continuity, stability, and reliability of the screening and crushing production line 200. In this embodiment, the area, inclination angle, and screening aperture of the sliding screen 100 can be designed according to the rated feed rate and feed particle size requirements of the crusher 220. This ensures that the processing capacity of the sliding screen 100 is slightly greater than the feed rate of the crusher 220, preventing material from accumulating on the sliding screen 100 or entering the crusher 220 without sufficient screening due to insufficient processing capacity of the sliding screen 100.
[0046] Please see Figure 3In one embodiment, the screening and crushing production line 200 further includes a first flap gate 240. The chute 210 includes a straight section 2101 and a first inclined section 2102. The two ends of the straight section 2101 are an inlet 21011 and a first branching point 21012, respectively. The two ends of the first inclined section 2102 are a first connecting point 21021 and a first outlet 21022, respectively. The straight section 2101 and the first inclined section 2102 are connected so that the first branching point 21012 communicates with the first connecting point 21021. The frame 1 is connected to the first inclined section 2102. The first flap gate 240 is located at the first branching point 21012 and is rotatably mounted on the first... The inner wall of the inclined chute section 2102 has a first flap gate 240 that can block or open the first branch opening 21012, so that the first flap gate 240 can prevent material from sliding out of the first branch opening 21012 or allow material to slide out of the first branch opening 21012 to the first connecting port 21021; specifically, the inlet 21011 of the straight chute section 2101 is used to receive unscreened material, the first branch opening 21012 of the straight chute section 2101 is connected to the first connecting port 21021 of the first inclined chute section 2102, and the first outlet 21022 of the first inclined chute section 2102 is connected to the feed end 111 of the sliding screen 100, ensuring that the material can be fed out according to the material's flow path. The material passes through the straight chute section 2101 and the first inclined chute section 2102 before smoothly entering the sliding screen 100 for preliminary screening. The first flap gate 240 is located at the first branch point 21012 of the straight chute section 2101 and is rotatably installed on the inner wall of the first inclined chute section 2102. By operating the first flap gate 240, the flow direction of the material can be flexibly controlled. When the first flap gate 240 is closed, it prevents the material from sliding out from the first branch point 21012. When the first flap gate 240 is open, it allows the material to pass smoothly into the subsequent processing stages of the sliding screen 100 and the crusher 220. This design allows the screening and crushing production line 200 to quickly adjust the material handling according to different production needs. The improved path enhances operational flexibility. When the screening and crushing production line 200 requires undersize particle size, the first flap gate 240 is opened, allowing the material to smoothly slide from the straight chute section 2101 into the first inclined chute section 2102 and through the sliding screen 100. The material undergoes pre-screening on the sliding screen 100 under its own gravity. The oversize product (material requiring downgrading) slides down the sliding screen 100 to the feed inlet of the crusher 220 for crushing. The undersize material (the portion meeting the requirements of the next stage product and not requiring crushing) falls into the first channel through the first screening hole 22 and the second screening hole 32 between the grid bars 21 and the crossbar 31. This achieves efficient and precise material screening, ensuring smooth operation of the entire production process. The undersize particle size requirement refers to the specific requirements for the particle size of the material passing through the screening holes and becoming the undersize product during the screening process.
[0047] Please see Figure 3In one embodiment, the screening and crushing production line 200 further includes a first conveyor 250; a first discharge port 2202 is disposed toward the first conveyor 250; and / or, a second discharge port 2302 is disposed toward the first conveyor 250. Specifically, in this embodiment, the first discharge port 2202 of the crusher 220 and the second discharge port 2302 of the first pipe 230 are both disposed toward the first conveyor 250, so that the material sliding out from the first discharge port 2202 and the second discharge port 2302 can fall directly onto the first conveyor 250, and then be transferred to the next stage screening and crushing workshop by the first conveyor 250, thereby achieving the purpose of efficient and accurate material screening, crushing and transfer, ensuring the smooth operation of the entire production process, reducing intermediate transfer links, shortening processing time, improving overall production efficiency, and reducing reliance on manual labor through the automated operation of the first conveyor 250, reducing labor costs, making material flow more orderly, reducing system failures caused by material accumulation or jamming, and enhancing the stability and reliability of the system. In this embodiment, the first conveyor 250 can be a belt conveyor, a chain conveyor or a screw conveyor. This embodiment does not limit the specific selection of the first conveyor 250.
[0048] Please see Figure 3In one embodiment, the chute 210 further includes a second inclined section 2103, and the screening and crushing production line 200 further includes a roller screen 260 and a second pipe 270. The straight section 2101, at its end furthest from the inlet 21011, is provided with a second branch port 21013. The two ends of the second inclined section 2103 are a second connection port 21031 and a second outlet 21032, respectively. The straight section 2101 is connected to the second inclined section 2103 so that the second branch port 21013 communicates with the second connection port 21031. The roller screen 260 has a third feed inlet 2601 and a third discharge outlet 2602. The roller screen 260 is provided with screen holes 2603. The third feed inlet 2601 communicates with the second discharge outlet 2602. The second pipe 270 is connected to the fourth feed inlet 2701 and the fourth discharge outlet 2702 at its two ends. The second pipe 270 is located at the bottom of the roller screen 260. The second inclined chute section 2103 can be connected to the fourth feed inlet 2701 through the screen hole 2603, and the fourth discharge outlet 2702 is connected to the second discharge outlet 2302. Specifically, the second branch port 21013 of the straight chute section 2101 is connected to the second connection port 21031 of the second inclined chute section 2103, and the second outlet 21032 of the second inclined chute section 2103 is connected to the third feed inlet 2601 of the roller screen 260, ensuring that the material can pass through the straight chute section 2101 and the second inclined chute section 2103 in sequence. The material then smoothly enters the roller screen 260 for screening. The second pipe 270 is located at the bottom of the roller screen 260. The second inclined chute section 2103 can connect to the fourth feed port 2701 of the second pipe 270 through the screen holes 2603, allowing fine particles to pass directly into the first pipe 230 through the screen holes 2603. The screen holes 2603 on the roller screen 260 can separate fine particles, making the material processed by the roller screen 260 more uniform and improving the screening accuracy. The fourth discharge port 2702 of the second pipe 270 is connected to the second discharge port 2302 of the first pipe 230, so that the material sliding out from the fourth discharge port 2702 can be conveyed by the first conveyor 250. The material is then sent to the next stage of screening and crushing workshop, thereby achieving efficient screening and orderly transfer of materials, ensuring the continuity and stability of the entire production process. By introducing the second inclined chute section 2103 and the roller screen 260, the material flow direction is rationally allocated, reducing the load on individual equipment, lowering the risk of equipment wear, and extending service life. This allows the screening and crushing production line 200 to flexibly switch material processing paths according to different needs. When the screening and crushing production line 200 has a requirement for undersize particles, the sliding screen 100 path can be selected; when the screening and crushing production line 200 has a requirement for oversize particles, the roller screen 260 path can be selected. This greatly improves the flexibility and adaptability of the screening and crushing production line 200. The oversize particle size requirement refers to the specific requirements for the particle size of the material remaining on the screen during the screening process.
[0049] Please see Figure 3In one embodiment, the screening and crushing production line 200 further includes a second flap gate 280, which is located at the second bifurcation 21013. The second flap gate 280 is rotatably mounted on the inner wall of the second inclined section 2103. The second flap gate 280 can block or open the second bifurcation 21013, so that the second flap gate 280 can prevent material from sliding out of the second bifurcation 21013 or the second flap gate 280 can avoid material so that material can flow out of the second bifurcation 21013. 1013 slides out to the second connection port 21031; specifically, the second flap gate 280 is located at the second bifurcation port 21013 of the straight chute section 2101, and is rotatably installed on the inner wall of the second inclined chute section 2103. By operating the second flap gate 280, the flow direction of the material can be flexibly controlled. When the second flap gate 280 is closed, it prevents the material from sliding out of the second bifurcation port 21013. When the second flap gate 280 is open, it allows the material to pass smoothly and enter the subsequent processing ring of the roller screen 260. This design allows the screening and crushing production line 200 to quickly adjust the material handling path according to different production needs, improving operational flexibility. When the screening and crushing production line 200 has a requirement for oversize particles, the second flap gate 280 is opened, allowing the material to smoothly pass from the straight chute section 2101 through the second inclined chute section 2103 and slide into the roller screen 260. The material completes the screening process on the roller screen 260. The oversize product (the part that meets the requirements of the next stage product and does not need to be crushed) is accurately transported to the loading station or sorting workshop, while the undersize material (the material that needs to be downgraded) falls through the screen holes 2603 into the second pipe 270, and is then transported to the next stage screening and crushing workshop by the first conveyor 250. This achieves efficient screening and orderly transfer of materials, ensuring the continuity and stability of the entire production process. Through the combined operation of the first flap gate 240 and the second flap gate 280, the screening and crushing production line 200 can flexibly switch the material handling path according to different needs, greatly improving the system's flexibility and adaptability.
[0050] In this embodiment, the first flap gate 240 and the second flap gate 280 can be rotated by a hydraulic system, or they can be rotated manually to adapt to different application scenarios and needs. This embodiment does not limit this.
[0051] Please see Figure 3In one embodiment, the screening and crushing production line 200 further includes a second conveyor 290, with a third discharge port 2602 facing the second conveyor 290. Specifically, the third discharge port 2602 of the roller screen 260 is directly facing the second conveyor 290, allowing the material sliding out of the third discharge port 2602 to fall directly onto the second conveyor 290, reducing intermediate transfer links and enabling the material to enter the second conveyor 290 more smoothly. This improves the continuity of the entire screening and crushing production line 200. After passing through the roller screen 260, the material can be directly and accurately transported to the loading station or sorting workshop via the second conveyor 290, reducing waiting time and intermediate links, shortening processing time, and improving overall production efficiency. Furthermore, the automated operation of the second conveyor 290 reduces reliance on manual labor, lowers labor costs, makes material flow more orderly, reduces system failures caused by material accumulation or jamming, and enhances the stability and reliability of the system. In this embodiment, the second conveyor 290 can be a belt conveyor, a chain conveyor, or a screw conveyor. This embodiment does not limit the specific selection of the second conveyor 290.
[0052] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A sliding screen, characterized in that, The sliding screen includes a frame, a first screening component, and a second screening component. The frame is inclined relative to a horizontal plane. The two ends of the frame along a first direction are a feed end and a discharge end, respectively. The feed end is used to communicate with a chute, and the discharge end is used to communicate with the first feed inlet of a crusher. The first screening component and the second screening component are arranged sequentially along a second direction. The side of the first screening component away from the second screening component is used to contact the material. The first screening component is connected to the frame and forms at least two first screening holes with the frame. The second screening component is connected to the frame and forms at least two second screening holes with the frame. The first screening holes communicate with the second screening holes. The first screening holes extend along the first direction, and the second screening holes extend along a third direction. Both the second direction and the third direction are perpendicular to the first direction and intersect each other.
2. The sliding screen as described in claim 1, characterized in that, The first screening component includes a plurality of grid strips, which are spaced apart along the third direction. Each grid strip is connected to the frame and forms a plurality of first screening holes with the frame. The first direction, the second direction, and the third direction are perpendicular to each other. And / or, The second screening component includes a plurality of crossbars, which are spaced apart along a first direction. Each crossbar is connected to the frame and forms a plurality of second screening holes with the frame. The first direction, the second direction, and the third direction are perpendicular to each other.
3. The sliding screen as described in claim 1, characterized in that, The frame includes a frame body, a first fixing plate, and a second fixing plate. The two ends of the frame body along a first direction are the feed end and the discharge end, respectively. The first fixing plate is located at the feed end, and the second fixing plate is located at the discharge end. Both the first fixing plate and the second fixing plate are connected to the frame body. The first fixing plate is used to connect to the chute, and the second fixing plate is used to connect to the crusher. The first screening component is connected to the frame body and forms at least two first screening holes with the frame body. The second screening component is connected to the frame body and forms at least two second screening holes with the frame body.
4. The sliding screen as described in any one of claims 1 to 3, characterized in that, If we define the angle A between the frame and the horizontal plane as follows: 30°≤A≤60°.
5. A screening and crushing production line, characterized in that, The screening and crushing production line includes a chute, a crusher, a first pipe, and a sliding screen as described in any one of claims 1 to 4. The chute has an inlet and a first outlet, the first outlet being connected to the feed end. The crusher has a first feed port and a first discharge port, and the crusher is located below the discharge end so that the material leaving the discharge end can enter the first feed port under the action of gravity. The frame is connected to the chute. The first pipe is disposed on the side of the frame away from the chute, and the two ends of the first pipe are a second feed port and a second discharge port, respectively. The chute can communicate with the second feed port through the first screening hole and the second screening hole.
6. The screening and crushing production line as described in claim 5, characterized in that, The screening and crushing production line also includes a first flap gate. The chute includes a straight section and a first inclined section. The two ends of the straight section are the inlet and the first branching point, respectively. The two ends of the first inclined section are the first connection point and the first outlet, respectively. The straight section and the first inclined section are connected to communicate between the first branching point and the first connection point. The frame is connected to the first inclined section. The first flap gate is located at the first branching point. The first flap gate is rotatably installed on the inner wall of the first inclined section. The first flap gate can block or open the first branching point so that the first flap gate can prevent the material from sliding out of the first branching point or the first flap gate can avoid the material so that the material slides out of the first branching point to the first connection point.
7. The screening and crushing production line as described in claim 6, characterized in that, The screening and crushing production line also includes a first conveyor; The first discharge port is positioned facing the first conveyor; And / or, The second discharge port is positioned facing the first conveyor.
8. The screening and crushing production line as described in claim 6, characterized in that, The chute further includes a second inclined section, and the screening and crushing production line further includes a roller screen and a second pipe. The straight section is provided with a second branch port at the end away from the inlet. The two ends of the second inclined section are a second connection port and a second outlet, respectively. The straight section is connected to the second inclined section so that the second branch port communicates with the second connection port. The roller screen has a third feed inlet and a third discharge outlet. The roller screen is provided with screen holes. The third feed inlet communicates with the second outlet. The two ends of the second pipe are a fourth feed inlet and a fourth discharge outlet, respectively. The second pipe is located at the bottom of the roller screen. The second inclined section can communicate with the fourth feed inlet through the screen holes. The fourth discharge outlet communicates with the second discharge outlet.
9. The screening and crushing production line as described in claim 8, characterized in that, The screening and crushing production line also includes a second flap gate, which is located at the second bifurcation. The second flap gate is rotatably installed on the inner wall of the second inclined section. The second flap gate can block or open the second bifurcation, so that the second flap gate can prevent the material from sliding out of the second bifurcation or the second flap gate can avoid the material so that the material slides out of the second bifurcation to the second connection port.
10. The screening and crushing production line as described in claim 8, characterized in that, The screening and crushing production line also includes a second conveyor, and the third discharge port is arranged facing the second conveyor.