A new high-efficiency composite sieve plate

Abstract

The utility model discloses a novel high -efficient composite screen plate relates to screening equipment field, solves the problem of low open area of traditional screen plate, easy to block hole, short life, poor versatility. The screen plate includes screen plate mounting seat and a plurality of screen plate module, and screen plate module is fixed in mounting seat, and screen plate module contains integrated base and side -by -side setting long strip triangular body screen plate unit (point end faces up);Screen plate unit both sides are equipped with screen hole, and the material end is equipped with distribution block;Mounting seat, base and screen plate unit inside hollow intercommunication, and adjacent screen plate unit forms the flow guide channel, and mounting seat both sides are equipped with symmetrical mounting groove. The utility model discloses through the design of wavy screen surface, sharp top structure, distribution block and flow guide channel, improves the sieve probability and dehydration efficiency, reduces the block hole and abrasion;Modular design and multiple adaptation installation mode make that screen plate versatility is strong, and installation maintenance is convenient, is applicable to the dehydration screening of coal and other materials, especially adapts to the poor working condition in coal mine.

Description

Technical Field

[0001] This utility model relates to the field of screening equipment technology, specifically to a new type of high-efficiency composite screen plate suitable for dewatering and screening materials such as coal, especially suitable for harsh working conditions in underground coal mines. Background Technology

[0002] In coal mining, washing, and other processes, screen plates are key components for material classification and dewatering. However, existing traditional screen plates have the following technical defects: Unreasonable structural design: Traditional screen plates are mostly integral planar structures, which are inconvenient to install and disassemble, and are prone to loosening and displacement after being impacted by coal particles, affecting the stability of screening.

[0003] Easy to clog holes and low screening efficiency: The opening rate of the flat screen plate is limited, the material has few opportunities to come into contact with the screen holes, and the material is easy to accumulate on the screen surface, resulting in frequent clogging and low screening probability.

[0004] Short service life: The high humidity, corrosive gases and particle impact in underground coal mines make the joints of traditional screen plates prone to wear and corrosion, requiring frequent replacement, which increases maintenance costs and downtime.

[0005] Poor versatility: It cannot be adapted to different types of screening equipment and dewatering processes for coal materials with varying moisture content and particle size.

[0006] To address the aforementioned problems, this invention provides a composite screen plate that is easy to install, highly efficient in screening, and has a long service life through structural optimization. Utility Model Content

[0007] To address the problems existing in the prior art, this utility model provides a high-efficiency composite screen plate. Through the combination of a "screen plate mounting base and a modular screen plate", the components work together to achieve stable and efficient screening, thereby solving the above problems.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is: a high-efficiency composite sieve plate; 1. Overall Structure The high-efficiency composite screen plate mainly consists of a screen plate mounting base and several screen plate modules. The screen plate modules are firmly fixed on the screen plate mounting base. The screen plate mounting base serves to support and connect the screen plate modules. The mounting slots on both sides facilitate the convenient and secure installation of the entire screen plate onto various screening equipment. The installation method can adopt conventional and reliable methods such as bolt fastening and snap-fit ​​connection to ensure that the screen plate will not shift or loosen during equipment operation. 2. Sieve Plate Module Structure Each sieve plate module includes an integrally molded base and several sieve plate units arranged side by side on the top of the base; the integrally molded base ensures the stability and integrity of the structure and reduces weak points caused by splicing; the sieve plate unit has a long triangular structure with the pointed end facing upward, and this unique shape design is one of the key factors to achieve efficient screening. The screen plate mounting base, base and screen plate unit are hollow and interconnected, forming a flow channel between adjacent screen plate units; the hollow internal structure not only reduces the overall weight of the screen plate and reduces material costs, but also provides an additional channel for the passage of moisture and fine particles in the material, which helps to improve dewatering and screening efficiency. 3. Working principle and advantages Material movement and screening probability: The material moves on the corrugated screen surface. Compared with the traditional flat screen plate, the material constantly changes its direction of movement on the corrugated screen surface and passes through the screen holes multiple times, which greatly increases the contact opportunity between the screen holes and the material and significantly improves the screening probability.

[0009] Loosening the material bed and reducing the probability of clogging: The pointed structure of the screen plate unit effectively loosens the material bed, assists in adjusting the bed structure, and propels the material forward, reducing the probability of clogging. This specific angle design allows it to function better. When material accumulates on the screen surface, the pointed structure can penetrate the material bed, increasing the gaps between material particles and promoting material flow and loosening. Simultaneously, during material movement, the pointed structure continuously propels the material forward, reducing the residence time of the material on the screen surface and lowering the possibility of screen clogging. Taking the processing of sticky materials as an example, traditional screen plates are prone to clogging due to material adhesion; however, the pointed structure of this screen plate effectively breaks up the adhesion of the material, keeping the screen holes unobstructed.

[0010] Improved Aperture Ratio and Production Efficiency: The corrugated screen surface design significantly increases the aperture ratio. Compared to traditional flat screens, the corrugated screen surface allows for more screen holes within the same screen area, increasing the effective area for material passage. In the dewatering process, more moisture can be quickly discharged through the increased aperture ratio, thereby improving dewatering efficiency, reducing the moisture content of the material, and enhancing product quality. For example, in mineral washing and beneficiation, efficient dewatering can reduce energy consumption and time in subsequent drying processes, improving overall production efficiency. Material separation and water flow impact reduction: The material separation block structure is designed to separate and disperse materials and reduce the impact of water flow. It is optimized for different material characteristics. When materials and water impact the screen plate at high speeds, the material separation block can disperse the material flow into multiple smaller streams, reducing the concentrated impact force and breaking up material clumps, resulting in a more even distribution of material on the screen surface, thus improving screening uniformity and efficiency. When processing materials containing a large amount of moisture, the material separation block can also effectively reduce the direct impact of water flow on the screen plate, extending the service life of the screen plate. Optimization of the flow guide channel: When designing the flow guide channel, the physical characteristics of the material and water flow, as well as the flow rate changes during the screening process, are fully considered. For example, for materials with good flowability and high flow rate, the cross-sectional area of ​​the flow guide channel can be gradually increased to ensure that the material and water flow are evenly dispersed during passage, avoiding localized excessive flow velocity or blockage. For materials with high viscosity and poor flowability, the shape and trend of the flow guide channel can be appropriately adjusted to increase the friction between the material and the channel wall, promoting material flow. By optimizing the flow guide channel, the overall working efficiency and stability of the screen plate are improved, ensuring the smooth progress of the screening process.

[0011] The beneficial effects of this utility model are: 1) Easy installation: The screen plate can be quickly fixed to various screening equipment through the symmetrical mounting slots of the mounting base. It is compatible with various installation methods such as bolts and clips, reducing the difficulty of installation. 2) High-efficiency screening: The corrugated screen surface increases the number of times the material comes into contact with the screen holes, increasing the probability of material passing through the screen; the guide channel and hollow structure accelerate the discharge of moisture and improve the dewatering efficiency. 3) Anti-clogging and easy maintenance: The pointed top structure of the screen plate unit loosens the material bed and reduces clogging; the rounded corner design of the screen holes reduces wear; even if a small number of clogging occurs, it can be cleared by blowing with compressed air; the screen plate module can be replaced individually without the need for overall disassembly, reducing maintenance costs. 4) Long service life and strong versatility: The one-piece molded structure and material distribution block design reduce wear and corrosion, extending service life; it is compatible with various materials such as polyurethane and wear-resistant alloys, and can be used for dewatering and screening of coal and other materials with different particle sizes and moisture content, and is compatible with various screening equipment. Attached Figure Description

[0012] Figure 1 is a three-dimensional structural schematic diagram of this utility model; Figure 2 is a front view of this utility model; Figure 3 is a top view of this utility model; In the diagram: 1. Screen plate mounting base; 2. Screen plate module; 21. Base; 22. Screen plate unit; 3. Flow guide channel. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope.

[0014] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0015] like Figure 1-3 As shown, a high-efficiency composite sieve plate includes: Screen plate mounting base: Made of high-strength metal or wear-resistant polyurethane material, it serves to support and fix the screen plate module; symmetrical mounting grooves are opened on both sides, and the width and depth of the mounting grooves are adapted to the installation interface of conventional screening equipment. The entire screen plate can be firmly installed on the equipment by conventional methods such as bolt fastening and snap-fit ​​connection, which can prevent the screen plate from shifting or loosening during operation and make installation and disassembly convenient.

[0016] Screen plate module: This is the core functional component of the screen plate. Each module is made using an integrated molding process (material can be polyurethane or wear-resistant alloy), and includes a base and several screen plate units. The integrated molding structure eliminates splicing gaps, enhances structural stability, reduces weak points prone to wear and corrosion, and extends service life.

[0017] The sieve plate unit is a long triangular structure with the pointed end facing upwards, and is evenly distributed in parallel along the length of the base. The angle between the pointed end of the sieve plate unit and the horizontal plane is 30°-60°, which can effectively insert into the material bed and avoid material accumulation. The sieve plate unit has the same number and shape of sieve holes (diameter 2-10mm, which can be customized according to the particle size of the material) evenly opened on both sides of the sieve plate unit. The edges of the sieve holes are rounded to reduce wear caused by material impact.

[0018] Material distribution block: Fixed at one end of the screen plate unit facing the material impact direction, it has a trapezoidal block structure and its height is flush with the tip of the screen plate unit; the width of the material distribution block is adapted to the arrangement spacing of the screen plate units, which can disperse the impacting material flow into multiple streams, reduce the concentrated impact force, and break up material clumps.

[0019] Hollow interconnected structure and flow guide channels: The screen plate mounting base, base, and screen plate unit are all hollow structures, and the three are interconnected. Long, narrow flow guide channels are formed between adjacent screen plate units. The cross-section of these channels is rectangular or trapezoidal, and the channel width can be adjusted according to the material's flowability (wider channels for materials with poor flowability). This structure reduces the overall weight of the screen plate and lowers material costs, while also providing additional discharge channels for moisture and fine particles, thus improving dewatering efficiency.

[0020] Corrugated screen surface: Several screen plate units and the base together form a corrugated screen surface. Compared with the traditional flat screen surface, the material can change direction continuously during movement and pass through the screen holes multiple times, increasing the contact opportunities.

[0021] Its principle is as follows: Material moves on the wavy screen surface, increasing the contact opportunity between the screen openings and the material, thus improving the screening probability. The special pointed structure loosens the material bed, assists in adjusting the bed structure, and propels the material forward, reducing the probability of clogging and cleaning / maintenance costs. The screen surface significantly increases the open area ratio, thereby improving the production efficiency of screening machinery, especially dewatering screens. The material distribution structure separates and disperses materials and reduces water flow impact. This screen plate is highly versatile and suitable for various polyurethane screen plates and dewatering processes for different materials. Its advantages include: more efficient separation of coal particles, reducing equipment idling and additional energy consumption caused by poor screening. Simultaneously, the better compatibility between the screen plate and screening equipment makes the entire screening system operate more smoothly and efficiently.

[0022] Sieve plate manufacturing Material selection: The screen plate mounting base is made of Q235 steel plate by stamping, and the screen plate module is made of polyurethane material by molding (or wear-resistant alloy casting). The material distribution block and the screen plate unit are molded / cast synchronously to ensure a stable connection.

[0023] Size control: The width of the mounting groove is 10-15mm and the depth is 8-12mm, which can be used to install the interface of conventional screening equipment; the height of the screen plate unit is 50-80mm, the included angle of the tip is 45°, the screen holes on both sides are circular (5mm in diameter), the spacing between adjacent screen plate units is 20-30mm, and the width of the guide channel is 15-25mm.

[0024] Assembly: The completed screen plate module is fixed to the screen plate mounting base by welding, ensuring that the hollow structure of the mounting base, base and screen plate unit is completely connected and unblocked; the welded joints are treated with anti-corrosion treatment (spraying anti-rust paint) to enhance the downhole corrosion resistance.

[0025] Installation and Use Installation: The screen plate is fixed to the mounting frame of equipment such as dewatering screen and grading screen by bolt fastening through the symmetrical mounting slots of the screen plate mounting seat, ensuring that the bolts are tightened and there is no looseness.

[0026] Operation: Material enters from the receiving end of the screen plate, the material distribution block disperses the material flow, the material moves on the corrugated screen surface, the pointed structure loosens the material bed, fine particles and water are discharged through the screen holes, guide channels and hollow structure, and coarse particles move along the screen surface to the discharge end, completing the screening and dewatering.

[0027] Maintenance: Regularly check the fixing of the screen plate module and the blockage of the screen holes. If blockage is found, blow it out with compressed air. If the screen plate unit is severely worn, the corresponding screen plate module can be disassembled and replaced separately, without replacing the entire screen plate.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel high-efficiency composite sieve plate, characterized in that, include: A sieve plate mounting base and several sieve plate modules fixed on the sieve plate mounting base; Each of the sieve plate modules includes an integrally formed base and several sieve plate units arranged side by side on the upper end of the base; The sieve plate unit is a long triangular structure with the pointed end facing upwards. The number and shape of the sieve holes are evenly distributed on both sides, and a material distribution block is provided at one end of the sieve plate unit facing the material impact direction. The sieve plate mounting base, the base and the sieve plate unit are hollow and interconnected, and a flow guiding channel is formed between adjacent sieve plate units; The sieve plate mounting base has symmetrical mounting grooves on both sides.

2. The novel high-efficiency composite sieve plate according to claim 1, characterized in that, The mounting grooves on both sides of the sieve plate mounting base are fixed to the screening equipment by bolt fastening or snap-fit ​​connection.

3. The novel high-efficiency composite sieve plate according to claim 1, characterized in that, The pointed structure of the sieve plate unit is used to loosen the material bed, adjust the bed structure, and propel the material forward.

4. The novel high-efficiency composite sieve plate according to claim 1, characterized in that, The screen surface formed by the multiple screen plate modules is a corrugated screen surface, which is used to increase the contact opportunity between the material and the screen holes.

5. The novel high-efficiency composite sieve plate according to claim 1, characterized in that, The movement of materials on the screen surface and guide channel of the screen plate module increases the contact opportunity between the screen holes and the materials, thereby improving the probability of passing through the screen.

6. The novel high-efficiency composite sieve plate according to claim 1, characterized in that, The material separating blocks are used to separate and break up materials and reduce the impact of water flow.

7. The novel high-efficiency composite sieve plate according to claim 1, characterized in that, The cross-sectional area or shape of the flow channel is designed to adapt to the material's flowability and flow rate.

8. The novel high-efficiency composite sieve plate according to claim 1, characterized in that, The sieve plate module is fixed to the sieve plate mounting base by welding.

9. A novel high-efficiency composite sieve plate according to claim 1, characterized in that, Suitable for dewatering and screening processes of materials.

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