High-efficiency combined square plansifter lattice
By using the cross-stack arrangement of A and B screens in the high square screens, a two-part screening path is formed in parallel, which solves the problems of insufficient output growth of high square screens and unsatisfactory screening results in the existing technology, and achieves high-efficiency and high-quality screening effects.
Patent Information
- Application Number
- CN202421554797.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-03
AI Technical Summary
After the existing high square sieve screen screen increases the sieve area, the output increase is insufficient and the screening effect is not ideal. This is mainly due to the poor automatic grading effect of the materials in the screen, resulting in unbalanced quantity and quality of the sieve.
A type A and B type screens are used to cross-stack to form two-part screens in parallel, so as to half the thickness of the material layer, increase the number of material turnovers, and shorten the screening route of a single screen.
The yield and screening efficiency of high square screens are improved, and high-efficiency and high-quality screening effect is achieved.
Smart Images
Figure CN222919043U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the fields of high square screens, screen grids, and screen path designs, and particularly to a high-efficiency combined high square screen grid. Background Art
[0002] As the most important grading and screening equipment in wheat flour processing, high square screens are widely used in the flour industry; the screen grid of a high square screen is the main working component for realizing grading and screening. In the existing screen grid, there is a sieve residue discharging channel at one end of the screen grid. Materials enter from one end of the screen grid, are screened to the other end, and then enter the next screen grid through the sieve residue discharging channel.
[0003] The output of a high square screen is positively correlated with the screening area. With the continuous expansion of the scale of flour mills, the requirements for the single-machine output of high square screens are also increasing. To increase the screening area and improve the output, the size specifications of high square screen grids are constantly increasing, from 628 to 640, 740, 830, and even expanding to 1000; after the screen grid is enlarged, the output increases, but the increase in output does not reach the increase in the screening area, and the screening effect is not ideal.
[0004] According to experiments, the undersize is evenly divided into three sections from the feeding end to the discharging end of the screen grid for comparative analysis. The overall results are as follows: in terms of the quantity of the undersize, the feeding end has the most, followed by the discharging end, and the middle section has the least; in terms of the quality of the undersize, the feeding end is the best, followed by the discharging end, and the middle section has the worst quality; the reason is that most of the materials entering the high square screen in the flour mill have the characteristic of poor automatic classification effect. Due to the agitation of the materials at the feeding end of each screen grid, there are more fine particles at the lower part of the material layer, and the undersize is also correspondingly more, and the screening efficiency is the highest; as the materials move towards the discharging end, the fine particles in contact with the screen surface become fewer, and the fine particles in the upper and middle parts of the material layer fall less due to the poor automatic classification effect of the materials, so the undersize becomes less, or the quality of the undersize becomes worse (which can be regarded as a kind of "screen drying"); but near the discharging opening, due to the agitation effect of the materials, the classification effect of the materials is enhanced, the chance of fine particles contacting the screen surface increases, and the quantity and quality of the undersize are improved again.
[0005] Reference Figure 1 、 Figure 2 and Figure 3 , the traditional screen grid 8 includes a screen plate 81, a screen mesh 82 fixed on the screen plate 81, and an undersize bin 83 located below the screen mesh 82 and fixed on the screen plate 81; a discharge hole 10 is provided on one side of the undersize bin 83, and a traditional feeding channel 9 is provided on one side of the screen plate 81. A number of traditional screen grids 8 are stacked crosswise to form a high square screen, so there will be problems of long single-grid screening route and low screening efficiency. Summary of the Utility Model
[0006] The object of the present utility model is to provide a high-efficiency combined high-square sieve grid, which has the advantages of shortening the continuous screening length of materials on the sieve grid, increasing the number of times of material turning, improving the screening efficiency, and thus increasing the output of the high-square sieve.
[0007] To achieve the above object and other related objects, the present utility model provides the following technical solutions:
[0008] A high-efficiency combined high-square sieve grid, comprising
[0009] Type A sieve grid, in the middle of which there is a Type A blanking channel;
[0010] Type B sieve grid, at both opposite ends of which there are Type B blanking channels;
[0011] The Type A sieve grid and the Type B sieve grid are arranged in a cross-overlapping manner. The feeding end of the Type A sieve grid is located at both ends of the Type A sieve grid, and the feeding end of the Type B sieve grid is located in the middle of the Type B sieve grid. During the screening process, two parallel screening paths are formed on the screening surface of the Type A sieve grid and the screening surface of the Type B sieve grid respectively.
[0012] Through the above technical solution, the cross-overlapping arrangement of the Type A sieve grid and the Type B sieve grid forms a screening path for material screening, which is equivalent to each sieve grid being divided into two parts and used in parallel. Thus, the thickness of the material flow layer is halved, the number of times of material turning is increased, and the screening length of a single sieve grid is shortened, realizing high-efficiency and high-quality screening.
[0013] In an embodiment of the present utility model, it includes a plurality of Type A sieve grids and a plurality of Type B sieve grids, and the plurality of Type A sieve grids and the plurality of Type B sieve grids are arranged in a cross-overlapping manner.
[0014] Through the above technical solution, hierarchical screening is realized, and the quality of hierarchical screening is improved.
[0015] In an embodiment of the present utility model, it further includes a Type C sieve grid, and at one end of the Type C sieve grid there is a discharge port for connecting the screening path;
[0016] Above the Type C sieve grid, there are cross-overlapping Type A sieve grids and Type B sieve grids stacked.
[0017] In an embodiment of the present utility model, the sieve grid adjacent to the Type C sieve grid is a Type B sieve grid, and the Type B blanking channel is arranged opposite to the discharge port.
[0018] Through the above technical solution, hierarchical screening is realized and the Type C sieve grid is used to separate the materials with larger particle sizes first.
[0019] In an embodiment of the present utility model, it further includes a D-shaped sieve grid, and the D-shaped sieve grid includes a D-shaped sieve plate and a D-shaped sieve mesh fixed on the D-shaped sieve plate; a D-shaped discharge port for connecting the D-shaped sieve mesh is arranged on one side of the D-shaped sieve plate, and a lower-stage sieve path feed port is opened on the side wall of the D-shaped sieve plate;
[0020] A number of A-shaped sieve grids and B-shaped sieve grids which are cross-stacked are stacked above the D-shaped sieve grid, and the sieve grid adjacent to the D-shaped sieve grid above is a B-shaped sieve grid, and the B-shaped blanking channel is arranged opposite to the D-shaped discharge port;
[0021] A number of A-shaped sieve grids and B-shaped sieve grids which are cross-stacked are stacked below the D-shaped sieve grid, and the sieve grid adjacent to the D-shaped sieve grid below is an A-shaped sieve grid, and the A-shaped blanking channel intersects with the discharge port.
[0022] In an embodiment of the present utility model, the mesh size of the sieve meshes of the A-shaped sieve grids and B-shaped sieve grids above the D-shaped sieve grid is larger than the mesh size of the sieve meshes of the A-shaped sieve grids and B-shaped sieve grids below the D-shaped sieve grid.
[0023] Through the above technical solutions, multiple-stage screening is realized; the D-shaped sieve grid is used to first separate the large-grained materials in the screening process, and then the screenings of the previous sieve path are introduced again into another sieve path composed of the A-shaped sieve grids and B-shaped sieve grids below the D-shaped sieve grid; since the mesh size of the sieve meshes of the A-shaped sieve grids and B-shaped sieve grids above the D-shaped sieve grid is larger than the mesh size of the sieve meshes of the A-shaped sieve grids and B-shaped sieve grids below the D-shaped sieve grid, the screenings of the previous stage can be further classified and screened; the screening quality is improved.
[0024] As described above, a high-efficiency combined high square sieve grid of the present utility model has the following beneficial effects:
[0025] Two types of sieve grids, namely A-shaped sieve grids and B-shaped sieve grids, are adopted, and the A-shaped sieve grids and B-shaped sieve grids are cross-stacked; an A-shaped blanking channel is opened in the middle of the A-shaped sieve grid, and the feeding ends of the A-shaped sieve grid are located at both ends of the A-shaped sieve grid; B-shaped blanking channels are opened at both opposite ends of the B-shaped sieve grid, and the feeding ends of the B-shaped sieve grid are located in the middle of the B-shaped sieve grid; during the screening process, two parallel sieve paths are formed on the sieve surfaces of the A-shaped sieve grid and the B-shaped sieve grid, so that the thickness of the material layer on the sieve grid is halved, the number of times of material turning is increased, and the screening route of a single sieve grid is shortened, realizing high-efficiency and high-quality screening. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 is a schematic structural diagram of the cross-stacking of the traditional sieve grids in the background art of the present utility model;
[0027] Figure 2 is a schematic diagram of the sieve path in the background art of the present utility model;
[0028] Figure 3 is a cross-sectional view of a traditional sieve grid in the background art of the present utility model;
[0029] Figure 4 is a schematic structural diagram of the type A sieve grid in Embodiment 1 of the present utility model;
[0030] Figure 5 is a schematic structural diagram of the type B sieve grid in Embodiment 1 of the present utility model;
[0031] Figure 6 is a schematic structural diagram of the type C sieve grid in Embodiment 1 of the present utility model;
[0032] Figure 7 is a schematic structural diagram of the type D sieve grid in Embodiment 1 of the present utility model;
[0033] Figure 8 is a schematic structural diagram of a 5-layer high square sieve formed by cross-overlapping and combining the type A sieve grid and the type B sieve grid in Embodiment 1 of the present utility model;
[0034] Figure 9 is a schematic structural diagram of a 6-layer high square sieve formed by cross-overlapping and combining the type A sieve grid, the type B sieve grid and the type C sieve grid in Embodiment 2 of the present utility model;
[0035] Figure 10 is a schematic structural diagram of a 10-layer high square sieve formed by cross-overlapping and combining the type A sieve grid, the type B sieve grid and the type D sieve grid in Embodiment 3 of the present utility model;
[0036] Figure 11 is a schematic diagram of the sieve path of the 10-layer high square sieve in Embodiment 3 of the present utility model.
[0037] Reference numerals: 1. Type A sieve grid; 2. Type A blanking channel; 3. Type B sieve grid; 4. Type B blanking channel; 5. Sieve path; 6. Type C sieve grid; 7. Discharge port; 8. Traditional sieve grid; 81. Sieve plate; 82. Sieve mesh; 83. Under-sieve material bin; 9. Traditional blanking channel; 10. Discharge hole; 11. Type D sieve grid; 12. Type D sieve plate; 13. Type D sieve mesh; 14. Type D discharge port; 15. Lower-stage sieve path inlet. Detailed implementation manners
[0038] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.
[0039] Please refer to Figures 1 to 11It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the implementation conditions of the present utility model. Therefore, they do not have substantial technical significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear narration and are not used to limit the implementation scope of the present utility model. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the implementation scope of the present utility model.
[0040] Embodiment 1
[0041] Please refer to Figure 4 、 Figure 5 、 Figure 6 and Figure 8 , the present utility model provides a high-efficiency combined high-square sieve grid, including
[0042] Type A sieve grid 1, a Type A blanking channel 2 is provided in the middle of the Type A sieve grid 1; the Type A blanking channel 2 is a strip-shaped hole arranged parallel to the side of the Type A sieve grid 1;
[0043] Type B sieve grid 3, both opposite ends of the Type B sieve grid 3 are provided with Type B blanking channels 4; the Type B blanking channels 4 are strip-shaped holes arranged parallel to the side of the Type B sieve grid 3;
[0044] The Type A sieve grid 1 and the Type B sieve grid 3 are arranged in a cross-overlapping manner. For example, one Type B sieve grid 3 is stacked with one Type A sieve grid 1, or several Type A sieve grids 1 and several Type B sieve grids 3 are cross-overlappingly arranged, that is: the topmost sieve grid is the Type B sieve grid 3, the second layer sieve grid is the Type A sieve grid 1, the third layer sieve grid is the Type A sieve grid 1, the fourth layer sieve grid is the Type B sieve grid 3, and so on, to achieve hierarchical screening;
[0045] When the Type A sieve grid 1 and the Type B sieve grid 3 are cross-overlappingly arranged, the Type A blanking channel 2 and the Type B blanking channel 4 are arranged in parallel; the feeding end of the Type A sieve grid 1 is located at both ends of the Type A sieve grid 1, and the feeding end of the Type B sieve grid 3 is located in the middle of the Type B sieve grid 3; during the screening process, two parallel screening paths 5 are formed on the screening surfaces of both the Type A sieve grid 1 and the Type B sieve grid 3; thus, the thickness of the material flow layer on the sieve grid is halved, and the screening length of a single sieve grid is shortened, achieving high-efficiency and high-quality screening.
[0046] Brief description of the usage process: Materials enter the middle part of the topmost B-type sieve grid 3. The screening equipment drives the high square sieve to vibrate, so that the materials on the B-type sieve grid are automatically divided into two parts and then flow and are screened towards both ends of the B-type sieve grid 3 respectively. The small-particle-size materials pass through the sieve mesh and enter the under-screen bin; then the over-screen materials fall into both ends of the second-layer A-type sieve grid 1 from the B-type discharge channels 4 at both ends. The materials continue to flow and are screened from both ends to the middle on the second-layer A-type sieve grid 1, and then fall into the middle part of the third-layer B-type sieve grid 3 from the A-type discharge channel 2 in the middle for continuous screening, and so on.
[0047] Example 2
[0048] Please refer to Figure 9 , the A-type sieve grid 1 and the B-type sieve grid 3 are arranged in a cross-overlapping manner, where the topmost and bottommost layers are both B-type sieve grids 3. A C-type sieve grid 6 is stacked below the bottommost B-type sieve grid 3. One end of the C-type sieve grid 6 is provided with a discharge port 7 connected to the sieve mesh; the B-type discharge channel 4 of the bottommost B-type sieve grid 3 is arranged opposite to the discharge port 7.
[0049] Brief description of the usage process: Materials enter the middle part of the topmost B-type sieve grid 3, are automatically divided into two parts and then flow and are screened towards both ends of the B-type sieve grid 3 respectively. The small-particle-size materials pass through the sieve mesh and enter the under-screen bin; then the over-screen materials fall into both ends of the second-layer A-type sieve grid 1 from the B-type discharge channels 4 at both ends. The materials continue to flow and are screened from both ends to the middle on the second-layer A-type sieve grid 1, and then fall into the middle part of the third-layer B-type sieve grid 3 from the A-type discharge channel 2 in the middle for continuous screening, and so on; when the materials fall onto the bottommost B-type sieve grid 3, the materials are divided into two parts on the B-type sieve grid 3. Among them, a part of the large-particle-size materials are directly discharged from the discharge port 7 at the bottom of the B-type discharge channel 4; the other part of the materials fall onto the C-type sieve grid 6 and flow and are screened towards the discharge port 7. The large-particle-size materials are discharged from the discharge port 7, and the small-particle-size materials pass through the sieve mesh of the C-type sieve grid 6 and fall into the under-screen bin.
[0050] Example 3
[0051] Please refer to Figure 7 、 Figure 10 and Figure 11 , the A-type sieve grid 1 and the B-type sieve grid 3 are arranged in a cross-overlapping manner, where the topmost and bottommost layers are both B-type sieve grids 3. A D-type sieve grid 11 is stacked below the bottommost B-type sieve grid 3;
[0052] The D-type sieve grid 11 includes a D-type sieve plate 12 and a D-type sieve mesh 13 fixed on the D-type sieve plate 12; a D-type discharge port 14 connecting the D-type sieve mesh 13 is arranged on one side of the D-type sieve plate 12, and a lower-section sieve path feed port 15 is opened on the side wall of the D-type sieve plate 12; in this example, no under-screen bin 83 is provided in the D-type sieve grid 11;
[0053] The B-type discharge channel 4 of the B-type sieve grid 3 adjacent to the D-type sieve grid 11 is arranged opposite to the D-type discharge port 14;
[0054] A number of A-type sieve grids 1 and B-type sieve grids 3 are stacked below the D-type sieve grid 11. The sieve grid adjacent to the D-type sieve grid 11 below is the A-type sieve grid 1, and the A-type discharge channel 2 intersects with the discharge port 7.
[0055] Moreover, the mesh size of the sieve mesh 82 of the A-type sieve grid 1 and the B-type sieve grid 3 above the D-type sieve grid 11 is larger than the mesh size of the sieve mesh 82 of the A-type sieve grid 1 and the B-type sieve grid 3 below the D-type sieve grid 11.
[0056] Brief description of the usage process: The material enters the middle of the topmost B-type sieve grid 3, automatically divides into two parts and then flows and sieves towards both ends of the B-type sieve grid 3 respectively. The small-grained material passes through the sieve mesh and enters the undersize bin; then the oversize material falls from the B-type discharge channels 4 at both ends to both ends of the second-layer A-type sieve grid 1. The material continues to flow and sieve from both ends to the middle on the second-layer A-type sieve grid 1, and then falls from the A-type discharge channel 2 in the middle to the middle of the third-layer B-type sieve grid 3 to continue sieving, and so on; when the material falls to the bottommost B-type sieve grid 3, the material divides into two parts on the B-type sieve grid 3. One part of the large-grained material is directly discharged from the D-type discharge port 14 at the bottom of the B-type discharge channel 4; the other part of the material falls onto the D-type sieve grid 11 and flows and sieves towards the side of the D-type discharge port 14. The large-grained material is discharged from the D-type discharge port 14, and the small-grained material passes through the sieve mesh 82 of the D-type sieve grid 11 and falls onto the A-type sieve grid 1 below the D-type sieve grid, and all the undersize materials in the previous sieve path 5 are taken out and re-introduced onto the A-type sieve grid 1 below the D-type sieve grid through the feed port 15 of the lower sieve path; further sieving is carried out through another sieve path 5 composed of the A-type sieve grid 1 and the B-type sieve grid 3 below the D-type sieve grid 11; because the mesh size of the sieve mesh 82 of the A-type sieve grid 1 and the B-type sieve grid 3 above the D-type sieve grid 11 is larger than the mesh size of the sieve mesh 82 of the A-type sieve grid 1 and the B-type sieve grid 3 below the D-type sieve grid 11, the undersize materials of the previous level can be further classified and sieved; the sieving quality is improved.
[0057] In summary, the present utility model adopts two types of sieve grids, namely the A-type sieve grid 1 and the B-type sieve grid 3, and the A-type sieve grid 1 and the B-type sieve grid 3 are arranged in a cross-stacked manner to achieve classification sieving; during the sieving process of the material, two parallel sieve paths 5 are formed on the sieve surfaces of both the A-type sieve grid 1 and the B-type sieve grid 3, so that the thickness of the material layer on the sieve grid is halved, the number of times the material is turned is increased, the sieving route of a single sieve grid is shortened, and high-efficiency and high-quality sieving are achieved. Therefore, the present utility model effectively overcomes various disadvantages in the prior art and has high industrial utilization value.
[0058] The above embodiments are only illustrative of the principles and effects of the present utility model and are not intended to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present utility model should still be covered by the claims of the present utility model.
Claims
1. A high-efficiency combined high-planar screen grid, characterized by: include An A-type screen grid (1), wherein an A-type material discharge channel (2) is provided in the middle of the A-type screen grid (1); A B-type screen grid (3), wherein two opposite ends of the B-type screen grid (3) are provided with B-type material discharge channels (4); The A-type sieve grid (1) and the B-type sieve grid (3) are arranged in a cross-stacked manner; the feed ends of the A-type sieve grid (1) are located at both ends of the A-type sieve grid (1), and the feed ends of the B-type sieve grid (3) are located in the middle of the B-type sieve grid (3); during the screening process, the material forms two parallel screening paths (5) on the screening surface of the A-type sieve grid (1) and the screening surface of the B-type sieve grid (3).
2. A high-efficiency combined high plan screen grid according to claim 1, characterized in that: It comprises a plurality of A-type sieve grids (1) and a plurality of B-type sieve grids (3), wherein the plurality of A-type sieve grids (1) and the plurality of B-type sieve grids (3) are cross-stacked.
3. The high-efficiency combined high plan screen grid according to claim 1, characterized in that: It also includes a C-type screen grid (6), one end of which is provided with a discharge port (7) connected to a screen path; A-type sieve grids (1) and B-type sieve grids (3) are stacked crosswise on top of the C-type sieve grid (6).
4. A high-efficiency combined high plan screen grid according to claim 3, characterized in that: The sieve grid adjacent to the C-type sieve grid (6) is a B-type sieve grid (3), and the B-type feed channel (4) is arranged opposite to the discharge port (7).
5. The high-efficiency combined high plan screen grid according to claim 1, characterized in that: The D-type sieve grid (11) further comprises a D-type sieve grid (11), wherein the D-type sieve grid (11) comprises a D-type sieve plate (12) and a D-type sieve mesh (13) fixed on the D-type sieve plate (12); a D-type discharge port (14) connected to the D-type sieve mesh (13) is provided on one side of the D-type sieve plate (12); and a lower sieve path feed port (15) is provided on a side wall of the D-type sieve plate (12); A plurality of A-type sieve grids (1) and B-type sieve grids (3) are stacked above the D-type sieve grid (11), the sieve grid adjacent to the D-type sieve grid (11) above is the B-type sieve grid (3), and the B-type material discharge channel (4) is arranged opposite to the D-type material discharge port (14); A plurality of cross-stacked A-type sieve grids (1) and B-type sieve grids (3) are stacked below the D-type sieve grid (11); the sieve grid adjacent to the D-type sieve grid (11) below is the A-type sieve grid (1); and the A-type feed channel (2) is arranged to intersect with the discharge port (7).
6. A high-efficiency combined high plan screen grid according to claim 5, characterized in that: The mesh size of the screen (82) of the type A screen (1) and the type B screen (3) located above the type D screen (11) is larger than the mesh size of the screen (82) of the type A screen (1) and the type B screen (3) located below the type D screen (11).