Silica sand distribution plate and silica sand screening equipment

Abstract

This utility model discloses a silica sand distribution plate and a silica sand screening device, relating to the field of silica sand processing technology. The silica sand distribution plate includes a first distribution plate, a second distribution plate, and a mounting frame. The first distribution plate has multiple first discharge ports spaced apart, each with a strip-shaped cross-section, and the extension direction of the discharge ports is consistent with the material inlet direction. The second distribution plate has multiple second discharge ports spaced apart. Both the first and second distribution plates are fixedly connected to the mounting frame, with the second distribution plate located on the side of the first distribution plate away from the material inlet direction. Through the multiple strip-shaped first discharge ports, the concentrated feed can be initially dispersed. Subsequently, the second discharge ports on the second distribution plate can further disperse the material flow, evenly distributing the feed across the entire screen surface of the vibrating screen. This makes the screen surface load more balanced, improves the effective utilization rate of the screening area, delays screen wear, and enhances the overall processing capacity and production capacity of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of silica sand processing technology, and in particular to a silica sand distribution plate and a silica sand screening device. Background Technology

[0002] As an important basic raw material for industries such as glass, ceramics, casting and photovoltaics, the particle size classification accuracy and efficiency of silica sand directly affect the performance of the final product and the production cost. Vibrating screen is a key piece of equipment in silica sand processing production line for achieving particle size classification, and its performance has a decisive impact on the capacity, product quality and operating economy of the entire system.

[0003] Currently, the commonly used silica sand vibrating screens in the industry mainly consist of core components such as screen box, drive unit, vibrator, screen mesh, and damping springs. Their mainstream working principle is: the drive unit provides excitation force to the screen box, and the material is continuously thrown, diffused, and undergoes relative motion on the screen surface under this vibration, ultimately achieving the separation of particles of different sizes. However, due to the concentrated feeding of traditional silica sand vibrating screens, the screen surface in the rear section and edge areas of the screen box is not effectively utilized, remaining idle or under low load, resulting in low effective utilization of the screen surface and idle edge areas, affecting the overall production capacity of the equipment. Simultaneously, because the screen mesh in the feed inlet area is subjected to material impact for extended periods, radial and latitudinal breaks frequently occur in the screen mesh in the cover area. Utility Model Content

[0004] The main purpose of this utility model is to propose a silica sand cloth plate and a silica sand screening device, which aims to improve production capacity and service life.

[0005] To achieve the above objectives, the silica sand cloth plate proposed in this utility model includes:

[0006] The first material feeding plate has multiple first material discharge ports spaced apart. The cross-section of the first material discharge port is strip-shaped, and the extension direction of the first material discharge port is consistent with the material entry direction.

[0007] The second fabric plate has multiple second material discharge ports spaced apart.

[0008] Mounting frame, wherein both the first fabric plate and the second fabric plate are fixedly connected to the mounting frame;

[0009] The second fabric plate is located on the side of the first fabric plate away from the material entry direction.

[0010] In one embodiment, the first fabric plate and the second fabric plate are staggered along the normal direction of the plate surface, and the material falls onto the second fabric plate after passing through the first fabric plate.

[0011] In one embodiment, the first fabric plate and the second fabric plate are arranged in parallel.

[0012] In one embodiment, the width of the first discharge port is 20-30 mm.

[0013] In one embodiment, the distance between two adjacent first discharge ports is 20mm, and the length of the first discharge port is 200-300mm.

[0014] In one embodiment, the cross-section of the second discharge port is square, and the side length of the second discharge port is 30-50mm.

[0015] In one embodiment, the distance between two adjacent second discharge ports is 20 mm.

[0016] This utility model also proposes a silica sand screening device, including the silica sand cloth plate described above.

[0017] In one embodiment, the silica sand screening equipment includes a vibrating screen, the vibrating screen includes a screen mesh, and the first and second cloth plates are both inclined relative to the screen mesh surface, with an inclination angle of 23°–30°.

[0018] In one embodiment, the silica sand screening equipment further includes a belt conveyor, and the mounting frame is fixedly connected to the belt conveyor, through which the material is conveyed to the first fabric plate.

[0019] The technical solution of this utility model uses multiple strip-shaped first discharge ports to initially disperse the concentrated feed. Subsequently, the second discharge ports on the second distribution plate can further disperse the material flow. This two-stage distribution mechanism works together to evenly and disperse the feed onto the entire screen surface of the downstream vibrating screen, effectively activating the idle rear and edge screen areas in traditional equipment, making the screen surface load more balanced, thereby significantly improving the effective utilization rate of the screening area, delaying screen wear, and thus improving the overall processing capacity and production capacity of the equipment. Furthermore, the cross-section of the first discharge port is strip-shaped, and the extension direction of the first discharge port is consistent with the material entry direction, preventing the wet silica sand from accumulating and arching at the first discharge port, avoiding blockage problems, and ensuring the dispersion effect. 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 A schematic diagram of a structure of an embodiment of the silica sand cloth plate provided by this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the first fabric plate;

[0023] Figure 3 This is a schematic diagram of the second fabric plate.

[0024] Figure 4 A schematic diagram of another embodiment of the silica sand cloth plate provided by this utility model;

[0025] Figure 5 A schematic diagram of an embodiment of the silica sand screening equipment provided by this utility model.

[0026] Explanation of icon numbers:

[0027] 1. First feeding plate; 11. First discharge port; 2. Second feeding plate; 21. Second discharge port; 3. Mounting frame; 31. Support hook; 4. Vibrating screen; 41. Screen mesh.

[0028] 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

[0029] 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.

[0030] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), 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.

[0031] 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.

[0032] As an important basic raw material for industries such as glass, ceramics, casting and photovoltaics, the particle size classification accuracy and efficiency of silica sand directly affect the performance of the final product and the production cost. Vibrating screen is a key piece of equipment in silica sand processing production line for achieving particle size classification, and its performance has a decisive impact on the capacity, product quality and operating economy of the entire system.

[0033] Currently, the commonly used silica sand vibrating screens in the industry mainly consist of core components such as screen box, drive unit, vibrator, screen mesh, and damping springs. Their mainstream working principle is: the drive unit provides excitation force to the screen box, and the material is continuously thrown, diffused, and undergoes relative motion on the screen surface under this vibration, ultimately achieving the separation of particles of different sizes. However, due to the concentrated feeding of traditional silica sand vibrating screens, the screen surface in the rear section and edge areas of the screen box is not effectively utilized, remaining idle or under low load, resulting in low effective utilization of the screen surface and idle edge areas, affecting the overall production capacity of the equipment. Simultaneously, because the screen mesh in the feed inlet area is subjected to material impact for extended periods, radial and latitudinal breaks frequently occur in the screen mesh in the cover area.

[0034] This utility model proposes a silica sand fabric board.

[0035] Please see Figures 1 to 5 In one embodiment of this utility model, the silica sand cloth plate includes:

[0036] The first fabric plate 1 has a plurality of first material discharge ports 11 spaced apart. The cross-section of the first material discharge port 11 is strip-shaped, and the extension direction of the first material discharge port 11 is consistent with the material entry direction.

[0037] The second fabric plate 2 has a plurality of second material discharge ports 21 spaced apart;

[0038] Mounting frame 3, the first fabric plate 1 and the second fabric plate 2 are both fixedly connected to the mounting frame 3;

[0039] Wherein, the second fabric plate 2 is located on the side of the first fabric plate 1 away from the material entry direction;

[0040] The technical solution of this utility model uses multiple strip-shaped first discharge ports 11 to initially disperse the concentrated feed. Subsequently, the second discharge ports 21 on the second distribution plate 2 can further disperse the material flow. This two-stage distribution mechanism works together to evenly and disperse the feed onto the entire screen surface of the downstream vibrating screen, effectively activating the idle rear and edge screen areas in traditional equipment, making the screen surface load more balanced, thereby significantly improving the effective utilization rate of the screening area, delaying screen wear, and thus improving the overall processing capacity and production capacity of the equipment. Furthermore, the cross-section of the first discharge port 11 is strip-shaped, and the extension direction of the first discharge port 11 is consistent with the material entry direction, preventing the wet silica sand from accumulating and arching at the first discharge port 11, avoiding blockage problems, and ensuring the dispersion effect.

[0041] In some embodiments, the mounting frame 3 is fixedly connected with a plurality of first fabric plates 1, with adjacent first fabric plates 1 spaced apart. Silica sand can also fall from both sides of the first fabric plates 1 perpendicular to the feeding direction. It is understood that the number of first fabric plates 1 can be selected as needed.

[0042] In one embodiment, such as Figure 1 As shown, the mounting bracket 3 is fixedly connected to three fabric plates.

[0043] In another embodiment, the mounting frame 3 is fixedly connected to a fabric plate, and silica sand can fall from the periphery of the first fabric plate 1 through the first discharge port 11.

[0044] It should be noted that the first fabric plate 1 and the second fabric plate 2 are inclined relative to the horizontal plane. After passing through the first fabric plate 1, the silica sand will slide down to the second fabric plate 2 to achieve uniform distribution.

[0045] like Figure 4 As shown, the first fabric plate 1 and the second fabric plate 2 are staggered along the normal direction of the plate surface. After the material passes through the first fabric plate 1, it falls onto the second fabric plate 2.

[0046] It should be noted that after the silica sand comes out of the first discharge port 11 of the first distribution plate 1, it will undergo a free fall process and then hit the second distribution plate 2. This falling process increases the fluidity of the material, and the impact of the silica sand on the second distribution plate 2 can completely break up the silica sand that may still be slightly clumped after the first stage of dispersion, especially for silica sand with a certain moisture content, thereby ensuring the ultimate uniformity of the final distribution.

[0047] Optionally, the first fabric plate 1 and the second fabric plate 2 are arranged in parallel.

[0048] It is understandable that the parallel arrangement ensures that the vertical distance between the first fabric plate 1 and the second fabric plate 2 remains constant throughout the entire plate surface, thus guaranteeing the uniformity of the fabric.

[0049] Optionally, the width of the first discharge port 11 is 20-30mm.

[0050] like Figure 2 As shown, the width of the first discharge port 11 ensures that the discharge port has a sufficient flow cross section. Even for slightly damp and easily sticky silica sand, it can effectively prevent bridging and blockage at the inlet, ensuring the continuity and stability of production.

[0051] In one embodiment, the width of the first discharge port 11 is 20 mm.

[0052] In another embodiment, the width of the first discharge port 11 is 30mm.

[0053] In another embodiment, the width of the first discharge port 11 is 25mm.

[0054] Optionally, the distance between two adjacent first discharge ports 11 is 20mm, and the length of the first discharge port 11 is 200-300mm.

[0055] It is understandable that the 20mm spacing between two adjacent first material discharge ports 11 ensures that the first material distribution plate 1 has sufficient mechanical strength and structural rigidity, and can withstand the impact and wear of a large amount of silicon material for a long time without easily deforming or being damaged. At the same time, it determines the number of material discharge ports per unit width, realizing multi-stream diversion.

[0056] In one embodiment, the length of the first discharge port 11 is 200 mm.

[0057] In another embodiment, the length of the first discharge port 11 is 300mm.

[0058] In another embodiment, the length of the first discharge port 11 is 250 mm.

[0059] In some embodiments, the first fabric plate 1 and the second fabric plate 2 are made of PE (Polyethylene) plates with a molecular weight ≥ 8 million and a roughness ≤ 1.6. Considering that the silica sand contains a certain amount of moisture and acidic substances, in order to reduce the impact of corrosion on the device and the quality of the silica sand, the mounting bracket 3 is made of 304 stainless steel angle iron.

[0060] like Figure 3 As shown, the cross-section of the second discharge port 21 is square, and the side length of the second discharge port 21 is 30-50mm.

[0061] Understandably, the square second discharge port 21 has the same dimensions in both length and width at its outlet, which allows the material to spread and disperse evenly in all directions when it flows out, rather than just extending in one direction, so as to achieve a final uniform coverage of the material across the entire width of the screen surface.

[0062] It is understandable that multiple square second material discharge ports 21 are evenly distributed on the second material distribution plate 2.

[0063] Optionally, the distance between two adjacent second discharge ports 21 is 20mm.

[0064] Understandably, the evenly distributed square second discharge port 21 increases the discharge speed.

[0065] Optionally, the first fabric plate 1 and the second fabric plate 2 are fixed to the mounting bracket 3 by bolts for easy replacement and maintenance.

[0066] In one embodiment, such as Figure 4 As shown, the mounting bracket 3 is provided with a support hook 31. The side of the second fabric plate 2 facing away from the first fabric plate 1 abuts against the support hook 31 to ensure the stability of the second fabric plate 2 installation and not affect the installation and disassembly of the second fabric plate 2.

[0067] Optionally, the first fabric plate 1 has a square cross-section, and each of the four corners of the first fabric plate 1 has a through hole, and the mounting bracket 3 has a corresponding through hole for fixing the first fabric plate 1 with screws.

[0068] In one embodiment, the first fabric plate 1 has a square cross-section with the following dimensions: length 660mm, width 280mm, and thickness 15mm. Six first material drop holes 11 are opened in the middle of the first fabric plate 1.

[0069] It should be noted that the length of the second fabric plate 2 along the direction perpendicular to the feeding direction is greater than the length of the first fabric plate 1 along the direction perpendicular to the feeding direction, so as to ensure an effective and uniform distribution effect.

[0070] In one embodiment, the second fabric plate 2 has a square cross-section, and the dimensions are: length 1050mm, width 520mm, and thickness 15mm.

[0071] This utility model also proposes a silica sand screening device, which includes a silica sand cloth plate. The specific structure of the silica sand cloth plate is as described in the above embodiments. Since this silica sand screening device 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.

[0072] Optionally, the silica sand screening equipment includes a vibrating screen 4, which includes a screen 41. The first material plate 1 and the second material plate 2 are both inclined relative to the screen surface of the screen 41, and the inclination angle is 23°-30°.

[0073] Understandably, the falling speed of silica sand varies depending on the tilt angle. A range of 23°–30° can guide the material and effectively transport it to the middle and rear areas of the screen, thereby improving screening efficiency.

[0074] Preferably, both the first fabric plate 1 and the second fabric plate 2 are inclined at 25° relative to the mesh surface of the screen 41.

[0075] In one embodiment, both the first fabric plate 1 and the second fabric plate 2 are inclined relative to the mesh surface of the screen 41, and the inclination angle is 23°.

[0076] In another embodiment, both the first fabric plate 1 and the second fabric plate 2 are inclined relative to the mesh surface of the screen 41, and the inclination angle is 30°.

[0077] like Figure 5 As shown, the silica sand screening equipment also includes a belt conveyor (not shown in the figure), and the mounting frame 3 is fixedly connected to the belt conveyor. The material is conveyed to the first cloth plate 1 through the belt conveyor.

[0078] It is understandable that after the silica sand is conveyed from the belt conveyor to the first material distribution plate 1, a portion of it is diverted and falls to the front of the screen 41. Then, through the second material distribution plate 2, the silica sand is evenly distributed to the middle and rear of the screen, so that the silica sand is evenly distributed on the surface of the screen 41, thereby improving screening efficiency, reducing wear on the screen 41, and increasing its service life.

[0079] When the side length of the second discharge port 21 is 40mm, the distance between two adjacent second discharge ports 21 is 20mm, the length of the first discharge port 11 is 220mm, the width is 20mm, the distance between two adjacent first discharge ports 11 is 50mm, and both the first discharge plate and the second discharge plate are inclined at 25° relative to the surface of the screen 41, the comparison with the installation of the silica sand cloth plate is shown in the following table:

[0080] Screen utilization rate 60％～70％ 95％ 25％～35％ Productivity per unit area 25 tons / m²·h 30 tons / m²·h 20％ Screen replacement cycle 1 time / week 1 time / month -75％

[0081] Understandably, the silica sand cloth plate effectively reduces energy consumption per unit output; at the same time, the replacement cycle of the screen 41 is reduced from once per week to once per month, reducing equipment maintenance costs.

[0082] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection 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 scope of protection of the present utility model.

Claims

1. A silica sand fabric board, characterized in that, include: The first material feeding plate has multiple first material discharge ports spaced apart. The cross-section of the first material discharge port is strip-shaped, and the extension direction of the first material discharge port is consistent with the material entry direction. The second fabric plate has multiple second material discharge ports spaced apart. Mounting frame, wherein both the first fabric plate and the second fabric plate are fixedly connected to the mounting frame; The second fabric plate is located on the side of the first fabric plate away from the material entry direction.

2. The silica sand fabric plate as described in claim 1, characterized in that, The first and second fabric plates are staggered along the normal direction of the plate surface. After the material passes through the first fabric plate, it falls onto the second fabric plate.

3. The silica sand fabric plate as described in claim 2, characterized in that, The first fabric plate and the second fabric plate are arranged in parallel.

4. The silica sand fabric plate as described in claim 1, characterized in that, The width of the first discharge port is 20-30mm.

5. The silica sand fabric plate as described in claim 4, characterized in that, The distance between two adjacent first discharge ports is 20mm, and the length of the first discharge port is 200-300mm.

6. The silica sand fabric plate as described in claim 1, characterized in that, The second discharge port has a square cross-section, and the side length of the second discharge port is 30-50mm.

7. The silica sand fabric plate as described in claim 6, characterized in that, The distance between two adjacent second discharge ports is 20mm.

8. A silica sand screening device, characterized in that, Includes the silica sand fabric plate as described in any one of claims 1 to 7.

9. The silica sand screening equipment as described in claim 8, characterized in that, The silica sand screening equipment includes a vibrating screen, which includes a screen mesh. The first and second material feeding plates are both inclined relative to the screen mesh surface, and the inclination angle is 23°–30°.

10. The silica sand screening equipment as described in claim 8, characterized in that, The silica sand screening equipment also includes a belt conveyor, and the mounting frame is fixedly connected to the belt conveyor. The material is conveyed to the first cloth plate through the belt conveyor.

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