Silica sand screening device
The silicon sand screening process is optimized through the three-layer screen structure and auxiliary equipment, and the problem of hole blockage is solved and the screening efficiency and effect are improved.
Patent Information
- Application Number
- CN202510762738.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-09
- Publication Date
- 2025-07-25
AI Technical Summary
In the prior art, the method of gradual screening of layers is likely to cause hole blockage, affecting the passage and efficiency of silica sand screening.
A three-layer screen structure is adopted, in which the mesh number of the first screen and the third screen gradually decreases. The material is first screened through the second screen, and then screened through the first screen and the third screen. Combined with the structures such as material laying boxes, brushes and pressing plates, the screening process is optimized.
It reduces the encirclement and accumulation of large particles by small particles, improves screening efficiency, avoids rapid accumulation of screening mesh, and enhances screening effect.
Smart Images
Figure CN120362127A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of silica sand screening, and particularly to a silica sand screening device. Background Art
[0002] After being cleaned and classified and screened, silica sand can obtain products with various particle sizes, which can be respectively used as various industrial raw materials.
[0003] When performing multi-stage screening, the prior art generally arranges multiple sieves from top to bottom, and the mesh number gradually increases. Through layer-by-layer screening from top to bottom, the particle diameters are gradually separated from large to small. The existing screening method uses a layer-by-layer gradual screening method. The silica sand material with a small particle diameter needs to pass through each sieve layer before it can be finally screened out. Therefore, when passing through each sieve layer, the small particle diameter is surrounded by the large particle diameter on the outside, which easily causes clogging of the holes and affects the screening passing efficiency. Moreover, the first sieve layer has a small mesh number and a large pore diameter, and the material concentration passing rate is relatively fast. A large amount of material quickly accumulates on the second sieve layer, which easily causes accumulation and blockage, affecting the screening efficiency.
[0004] In the prior art, the problem that the layer-by-layer gradual screening method easily causes clogging of the holes and affects the screening passability needs to be solved. Summary of the Invention
[0005] The technical problem to be solved by the present invention is, in view of the above-mentioned technical deficiencies, to provide a silica sand screening device, which solves the problem that the layer-by-layer gradual screening method in the prior art easily causes clogging of the holes and affects the screening passability.
[0006] The technical solution adopted by the present invention is: to provide a silica sand screening device for multi-stage screening of silica sand materials, which is characterized in that it includes:
[0007] A box body;
[0008] A first sieve, arranged at the lower part inside the box body;
[0009] A second sieve, arranged at the upper part inside the box body and located above the first sieve;
[0010] A third sieve, arranged inside the box body and located below one side of the second sieve;
[0011] Wherein, the mesh numbers of the first sieve, the second sieve and the third sieve gradually decrease. After the material passes through the second sieve, it is screened by the first sieve, and the material located above the second sieve after screening is screened by the third sieve.
[0012] To further optimize the technical solution, it further includes:
[0013] The material laying box is used to accommodate materials inside, is movably arranged on the box body and is located above the second sieve. The upper end of the material laying box has a feeding port. The lower part of the material laying box on the side away from the third sieve in the moving direction has a discharging port, and the discharging port is located inside the box body.
[0014] To further optimize this technical solution, there is a gap between the lower end of the material laying box and the upper end of the second sieve. It further includes:
[0015] A brush is arranged at the lower end of the material laying box, and the lower end of the brush is slidably abutted against the upper end of the second sieve.
[0016] To further optimize this technical solution, the side wall of the box body above the second sieve and opposite to the discharging port is a baffle; it further includes:
[0017] A pressing plate is arranged at the lower end of the material laying box and is located below the discharging port. After the material laying box moves close to the baffle, the pressing plate approaches the baffle and is used to squeeze and crush the agglomerated materials.
[0018] To further optimize this technical solution, it further includes:
[0019] A sealing door is rotatably arranged at the upper end outside the material laying box and is used to cover the discharging port after rotating downward.
[0020] To further optimize this technical solution, the lower end of the sealing door has a serrated crushing part, and the crushing part is located beside the pressing plate.
[0021] To further optimize this technical solution, the first sieve, the second sieve and the third sieve are all inclined; it further includes:
[0022] A guiding plate is inclined between the second sieve and the first sieve and is used to guide the materials passing through the second sieve to the higher side of the first sieve.
[0023] The beneficial effects of the present invention are as follows:
[0024] 1. First, it is screened by the second sieve with a medium mesh number, and the materials are divided into a large particle group and a small particle group. The small particle group is screened by the first sieve, and the large particle group is screened by the third sieve, reducing the enclosure of small particles by large particles, thereby reducing the situation of accumulation and blockage and improving the screening efficiency.
[0025] 2. The second sieve has a medium mesh number, and the materials that can be intercepted are more than those that can be intercepted by the third sieve. Then, it can reduce the materials that quickly accumulate above the first sieve or the third sieve after the preliminary screening by the second sieve, which is beneficial to reducing the situation of accumulation and blockage. Description of the Drawings
[0026] Figure 1 Structural schematic diagram of the present invention;
[0027] Figure 2 Top view structural schematic diagram of the present invention;
[0028] Figure 3 For the present invention Figure 2 Cross-sectional structural schematic diagram at the A - A position of the workmanship;
[0029] Figure 4 For the present invention Figure 3 Partial enlarged structural schematic diagram at position a;
[0030] Figure 5 Structural schematic diagram of the door of the present invention close to the baffle;
[0031] Figure 6 Structural schematic diagram of the present invention in the use state;
[0032] Explanation of the marks in the figure: 1. Box body; 101. First discharge window; 102. Second discharge window; 103. Third discharge window; 104. Fourth discharge window; 105. Baffle; 201. First sieve; 202. Second sieve; 203. Third sieve; 3. Feeding box; 301. Feeding port; 302. Discharge port; 4. Brush; 5. Pressing plate; 6. Door; 601. Crushing part; 7. Guide plate. Detailed implementation manners
[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.
[0034] For the sake of simplicity of the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, for the sake of simplicity and easy understanding of the drawings, in some figures, for components with the same structure or function, only one of them is schematically shown, or only one of them is marked. In this article, "one" not only means "only this one", but also can mean "more than one" situation, and "several" includes "two" and "more than two".
[0035] In this article, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.
[0036] In addition, in the description of the present application, terms such as "first" and "second" are only used for differential description and cannot be construed as indicating or implying relative importance.
[0037] As Figures 1-6 shown, a silica sand screening device for multi-stage screening of silica sand materials includes: a box body 1; a first screen 201 disposed at the lower part inside the box body 1; a second screen 202 disposed at the upper part inside the box body 1 and above the first screen 201; a third screen 203 disposed inside the box body 1 and below one side of the second screen 202; wherein, the mesh numbers of the first screen 201, the second screen 202 and the third screen 203 gradually decrease, the material passes through the second screen 202 and then is screened by the first screen 201, and the material located above the second screen 202 after screening passes through the third screen 203 for screening.
[0038] The first screen 201, the second screen 202 and the third screen 203 are all inclined; further included is a guide plate 7 inclined between the second screen 202 and the first screen 201 for guiding the material passing through the second screen 202 to the higher side of the first screen 201.
[0039] During use, the material is screened by the second screen 202. The large particle material group is intercepted above the second screen 202, and the small particle material group passes through the filter holes of the second screen 202. The small particle material group can directly fall onto the first screen 201 and is then screened into two sizes of materials; the large particle material group is transferred to the third screen 203 and screened into two sizes of materials, and finally the material is screened into four different sizes.
[0040] Discharge windows can be provided on the box body 1 to discharge the screened materials respectively. For example, a first discharge window 101 is provided below the first screen 201, a second discharge window 102 is provided on one side above the first screen 201, a third discharge window 103 is provided below the third screen 203, and a fourth discharge window 104 is provided on one side above the third screen 203. The particle size specifications of the materials discharged from the first discharge window 101, the second discharge window 102, the third discharge window 103 and the fourth discharge window 104 increase in sequence. The filter hole density and size of the screens in the figure are only for illustration and do not represent the actual size.
[0041] The first sieve 201, the second sieve 202 and the third sieve 203 are all inclined to facilitate guiding the material to roll by gravity. The third sieve 203 can be located below the lower side of the second sieve 202. The material is added from the higher side of the second sieve 202, and the large particle group of materials can directly roll down above the third sieve 203 from above the second sieve 202 for screening. The first sieve 201 is located below the second sieve 202, and the inclination direction can be opposite to that of the second sieve 202, so that the length of the first sieve 201 is longer than that of the second sieve 202, so that the small particle material group passing through the second sieve 202 has a longer moving distance on the first sieve 201 for sufficient screening.
[0042] An inclined guide plate 7 is arranged between the first sieve 201 and the second sieve 202, and the inclination direction of the guide plate 7 can be opposite to the inclination direction of the first sieve 201 to guide the small particle material group to the higher side of the first sieve 201.
[0043] A first sieve 201 can be additionally arranged directly below the third sieve 203. After being screened by the second sieve 202, there may be a small amount of small particle materials doped or adhered to the surface of the large particle material group. After the small particles fall off and pass through the third sieve 203, they can be screened again through an independently arranged first sieve 201, and a discharge window can be adaptively added to the box body 1.
[0044] Furthermore, it further includes: a feeding box 3, which is used to accommodate materials inside, is movably arranged on the box body 1 and is located above the second sieve 202. The upper end of the feeding box 3 has a feeding port 301, and the lower part of the feeding box 3 on the side far from the third sieve 203 in the moving direction has a discharge port 302, and the discharge port 302 is located inside the box body 1.
[0045] There is a gap between the lower end of the feeding box 3 and the upper end of the second sieve 202. It further includes: a brush 4, which is arranged at the lower end of the feeding box 3, and the lower end of the brush 4 slides and abuts against the upper end of the second sieve 202.
[0046] During use, the feeding box 3 can gradually discharge materials to avoid the accumulation and blockage of materials on the second sieve 202, and delay or control the rolling of the large particle material group to the third sieve 203.
[0047] The discharge port 302 of the material laying box 3 is located below and inside the box body 1, that is, its height is lower than the upper end of the box body 1, so as to prevent material spillage. After a certain amount of material accumulates at the discharge port 302 (compared with a large amount of accumulation that causes blockage, the accumulation of a certain amount at the discharge port 302 here is a small amount, which controls the discharge and will not cause accumulation blockage), the material in the material laying box 3 stops discharging. The material laying box 3 continues to move and gradually discharges the material, reducing accumulation blockage. When discharging the material, the material laying box 3 gradually moves towards the direction of the third sieve 203, and the lower end approaches or abuts against the second sieve 202, which can prevent large or small granular materials from directly rolling onto the third sieve 203, extend the time of the material on the second sieve 202, improve the screening effect of the material, and reduce the situation that small granular materials roll directly onto the third sieve without having time to pass through the second sieve due to the short screening path. The material stored in the material laying box 3 is completely released during the movement on the second sieve 202. After the material laying box 3 moves above the third sieve 203, there is no more material discharge, and the large granular material group on the second sieve 202 can roll onto the third sieve 203.
[0048] A brush 4 is arranged at the lower end of the material laying box 3. The brush 4 is more likely to slide on the second sieve 202, which can prevent large granular materials from rolling, and at the same time, the brush 4 can clean the filter holes on the second sieve 202 to reduce blockage. In a single screening, when the material laying box 3 does not discharge all the materials, it can move back and forth on the second sieve 202, extend the residence time of the material, push the material to move to reduce local accumulation, and push the materials to rub against each other to improve the screening efficiency.
[0049] The movement of the material laying box 3 can be realized by relying on existing linear drive units, such as through a gear-rack structure or a lead screw drive structure or a pneumatic component, etc. This is prior art, and those skilled in the art can select a suitable structure to realize the movement of the material laying box 3, which is not shown in the drawings.
[0050] Further, the side wall of the box body 1 above the second sieve 202 and opposite to the discharge port 302 is a baffle 105; it further includes: a pressing plate 5, which is arranged at the lower end of the material laying box 3 and below the discharge port 302. After the material laying box 3 moves close to the baffle 105, the pressing plate 5 approaches the baffle 105 and is used to extrude and crush the agglomerated materials.
[0051] During use, the caked materials have poor rollability and will remain on the second sieve 202. The pressing plate 5 can press and disperse the caked materials so that materials of various particle sizes are completely separated before participating in screening. The discharge port 302 faces the baffle 105. When the screening on the second sieve 202 is completed, the large-particle material group rolls onto the third sieve 203. At this time, the feeding box 3 moves close to the baffle 105, and then the caked materials move along under the push of the pressing plate 5. During the movement of the caked materials on the second sieve 202, some materials may fall off due to friction with the sieve. Finally, the pressing plate 5 and the baffle 105 clamp the caked materials to press them apart. Processing the caked materials on the second sieve 202 can prevent the caked materials from being finally regarded as large-particle materials and screened out. The discovery of material caking can be completed by existing vision technologies, or it can be defined that after each screening, the feeding box 3 moves close to the baffle 105 for an operation of squeezing and dispersing the materials.
[0052] Furthermore, it further includes: a sealing door 6, the upper end of which is rotatably arranged outside the feeding box 3 and is used to cover the discharge port 302 after rotating downward. The lower end of the sealing door 6 has a serrated crushing part 601, and the crushing part 601 is located beside the pressing plate 5.
[0053] During use, when there is material in the feeding box 3, the material can squeeze open the sealing door 6 to discharge the material onto the second sieve 202. When all the materials are discharged, above the third sieve 203, the sealing door 6 covers the discharge port 302 by gravity. When it is necessary to squeeze and disperse the caked materials, the sealing door 6 can better cooperate with the baffle 105 to squeeze the caked materials. At the same time, during the process of squeezing the caked materials, the sealing door 6 is in a non-open state, and at this time, new materials to be screened can be added into the feeding box 3.
[0054] The crushing part 601 at the lower end of the sealing door 6 is serrated, and the serrated cross-section can be an isosceles triangle or an obtuse triangle, etc., which is convenient for squeezing and piercing the surface of the caked materials to better complete the dispersion.
[0055] It can be understood that the present invention is described through some embodiments. As is known to those skilled in the art, without departing from the spirit and scope of the present invention, various changes or equivalent replacements can be made to these features and embodiments. In addition, under the teaching of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.
Claims
1. A silica sand screening device for multi-stage screening of silica sand materials, characterized in that, Comprising: A box body (1); A first sieve (201), arranged at the lower part inside the box body (1); A second sieve (202), arranged at the upper part inside the box body (1) and located above the first sieve (201); A third sieve (203), arranged inside the box body (1) and located below and beside the second sieve (202); Wherein, the mesh numbers of the first sieve (201), the second sieve (202) and the third sieve (203) gradually decrease. After the material passes through the second sieve (202), it is screened by the first sieve (201). The material located above the second sieve (202) after screening is screened by the third sieve (203).
2. The silica sand screening device according to claim 1, characterized in that, It further comprises: A feeding box (3), the interior of which is used to accommodate the material, movably arranged on the box body (1) and located above the second sieve (202). The upper end of the feeding box (3) has a feeding port (301). The lower part of the feeding box (3) on the side away from the third sieve (203) in the moving direction has a discharging port (302), and the discharging port (302) is located inside the box body (1).
3. The silica sand screening device according to claim 2, characterized in that, There is a gap between the lower end of the feeding box (3) and the upper end of the second sieve (202). It further comprises: A brush (4), arranged at the lower end of the feeding box (3), and the lower end of the brush (4) slidably abuts against the upper end of the second sieve (202).
4. A silica sand screening device according to claim 3, characterized in that, One side wall of the box body (1) that is located above the second sieve (202) and opposite to the discharging port (302) is a baffle (105); It further comprises: A pressing plate (5), arranged at the lower end of the feeding box (3) and located below the discharging port (302). After the feeding box (3) moves close to the baffle (105), the pressing plate (5) approaches the baffle (105) and is used to squeeze and crush the caked material.
5. A silica sand screening device according to claim 4, characterized in that, It further comprises: A sealing door (6), the upper end of which is rotatably arranged outside the feeding box (3) and is used to cover the discharging port (302) after rotating downward.
6. The silica sand screening device according to claim 5, characterized in that, The lower end of the sealing door (6) has a serrated crushing part (601), and the crushing part (601) is located beside the pressing plate (5).
7. A silica sand screening device according to claim 1, characterized in that, The first sieve (201), the second sieve (202) and the third sieve (203) are all inclined; It further comprises: A guiding plate (7), inclined and arranged between the second sieve (202) and the first sieve (201) and used to guide the material passing through the second sieve (202) to the higher side of the first sieve (201).