sieve plate
By setting a cantilever structure to separate the screen holes on the screen plate, the problem of low screen plate opening rate is solved, the screening efficiency and material passage capacity are improved, and the screen plate is easy to clean and production is stable.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA SHENHUA ENERGY CO LTD HARWUSU OPEN-PIT COAL MINE
- Filing Date
- 2023-12-15
- Publication Date
- 2026-05-29
AI Technical Summary
The existing screen plates have a low opening rate, which makes it easy for fine particles to clog the screen surface and block the screen holes, resulting in low screening efficiency and difficulty in cleaning, affecting production operations and product quality.
A cantilever structure is installed on the main frame of the sieve plate. The cantilever structure divides the sieve hole section into smaller flow gaps, increasing the opening rate of the sieve plate. Furthermore, the gaps within the sieve hole section are further divided by the cantilever structure in different directions, thereby improving screening accuracy and the probability of sieve passage.
The increased aperture ratio of the sieve plate enhances the material's ability to pass through the sieve, prevents sieve blockage, improves screening efficiency, reduces cleaning difficulty, and ensures production continuity and product quality.
Smart Images
Figure CN117654891B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of sieve plate technology, and more specifically, to a sieve plate. Background Technology
[0002] Currently, in industries such as mining, chemical engineering, and agriculture, screen plates are commonly used for material screening. Screen plates typically have multiple screen holes, through which materials that do not meet the required precision are blocked, while materials that meet the standards pass through.
[0003] However, in the existing technology, due to the low opening rate of the screen surface, when screening sticky and wet materials, fine particles are prone to clogging the screen surface and blocking the screen holes. At the same time, fine particles are prone to agglomerate and are not easy to loosen, resulting in low screening efficiency, difficulty in cleaning the screen plate, and impact on subsequent production operations and the quality of the final product. Summary of the Invention
[0004] The main objective of this invention is to provide a sieve plate to solve the technical problem of low opening rate in existing sieve plates.
[0005] To achieve the above objectives, according to one aspect of the present invention, a sieve plate is provided, comprising:
[0006] The main frame has multiple sieve holes spaced apart on it.
[0007] A cantilever structure is installed inside the sieve hole section, and the cantilever structure protrudes into the sieve hole section.
[0008] The cantilever structure has a first end close to the sieve hole and a second end away from the sieve hole. Multiple cantilever structures are arranged at intervals along the circumference of the sieve hole, and the second ends of the multiple cantilever structures are spaced apart to form a flow gap.
[0009] Furthermore, the cantilever structure includes:
[0010] The first cantilever extends along a first preset direction;
[0011] The second cantilever is spaced apart from the first cantilever, and extends along a second preset direction. The second preset direction is set at a preset angle to the first preset direction.
[0012] Furthermore, the main frame includes:
[0013] A partition frame with multiple sieve holes is provided on the partition frame;
[0014] Multiple first partition ribs and multiple second partition ribs are arranged at a preset angle. The first partition ribs and the second partition ribs are disposed in the partition frame. At least two first partition ribs are connected to at least two second partition ribs to form multiple sieve holes in the partition frame.
[0015] Furthermore, along the first preset direction, the main frame includes a first screening frame and a second screening frame. Both the first screening frame and the second screening frame are provided with multiple screen holes. The screening accuracy of the first screening frame is greater than that of the second screening frame.
[0016] Furthermore, along the first preset direction, the length of the first screening frame is A, and the length of the second screening frame is B, where 1:1≤A:B≤2:1.
[0017] Furthermore, each of the multiple screen holes of the first screening frame is provided with multiple first cantilever arms and multiple second cantilever arms, and each of the multiple second cantilever arms is provided between any two of the multiple first cantilever arms, with the first ends of the multiple first cantilever arms and the first ends of the multiple second cantilever arms being spaced apart.
[0018] In this configuration, the second end of any first cantilever is spaced apart from the second end of any second cantilever, so that a first screening space is formed within the sieve aperture section.
[0019] Furthermore, along the first preset direction, the distance between the first ends of any two first cantilever arms is l1, and the distance between the second end of any first cantilever arm and the second end of any second cantilever arm is l2; along the second preset direction, the distance between the first ends of any two second cantilever arms is l3.
[0020] Where 1:1≤l1:l2≤1:2; and / or,
[0021] 1:1≤l1:l3≤1:2; and / or,
[0022] 1:1≤l2:l3≤1:2.
[0023] Furthermore, at least two first cantilever arms are provided in any one of the multiple screen holes of the second screening frame, the at least two first cantilever arms are arranged opposite each other, and the second ends of the at least two first cantilever arms are spaced apart.
[0024] Furthermore, along the first preset direction, the length of the sieve hole portion is L, and the distance between the second ends of at least two first cantilever arms is l4, where 1:3≤l4:L≤1:2.
[0025] Furthermore, there are multiple partition frames, which are connected together, and any two adjacent partition frames are detachably connected; and / or,
[0026] The main frame and cantilever structure are integrated; and / or,
[0027] The main frame is made of elastic material; and / or,
[0028] The cantilever structure is made of elastic material.
[0029] By applying the technical solution of this invention, a cantilever structure is set on the main frame of the sieve plate, which can divide and form a smaller flow gap in the sieve hole section. The flow gap increases the opening rate of the sieve plate, thereby increasing the probability of material passing through the sieve and solving the technical problem of low opening rate of sieve plates in the prior art. Attached Figure Description
[0030] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:
[0031] Figure 1 A schematic diagram of the structure of a first screening frame provided according to an embodiment of the present invention is shown;
[0032] Figure 2 A schematic diagram of the structure of a second screening rack according to an embodiment of the present invention is shown;
[0033] Figure 3 A schematic diagram of the overall structure of a sieve plate provided according to an embodiment of the present invention is shown.
[0034] The above figures include the following reference numerals:
[0035] 10. Main frame; 11. Screening section; 111. First screening hole; 112. Second screening hole; 113. Third screening hole; 114. Fourth screening hole; 12. Separating frame; 13. First separating rib; 14. Second separating rib; 15. First screening frame; 16. Second screening frame;
[0036] 20. Cantilever structure; 21. First cantilever; 22. Second cantilever. Detailed Implementation
[0037] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0038] Please refer to Figures 1 to 3 In an embodiment of the present invention, a sieve plate is provided, comprising a main frame 10 and a cantilever structure 20. The main frame 10 is provided with a plurality of sieve holes 11 spaced apart. The cantilever structure 20 is disposed within the sieve holes 11 and protrudes into the sieve holes 11. Each cantilever structure 20 has a first end near the sieve hole 11 and a second end away from the sieve hole 11. A plurality of cantilever structures 20 are spaced apart along the circumference of the sieve holes 11, and the second ends of the plurality of cantilever structures 20 are spaced apart to form flow gaps.
[0039] By adopting the technical solution provided in this embodiment, a larger screen hole portion 11 is provided on the main frame 10 of the screen plate, and the screen hole portion 11 is divided by the cantilever structure 20. In this way, a smaller gap can be formed in the screen hole portion 11 (which can also be understood as forming a smaller screen hole in the screen hole portion 11). Furthermore, since the second ends of the multiple cantilever structures 20 are spaced apart, more gaps can also be formed between the multiple second ends, thereby effectively improving the opening rate of the screen plate and solving the technical problem of low opening rate of the screen plate in the prior art, which can improve the probability of material passing through the screen.
[0040] In this embodiment, the cantilever structure 20 includes a first cantilever 21 and a second cantilever 22. The first cantilever 21 extends along a first preset direction. The second cantilever 22 is spaced apart from the first cantilever 21 and extends along a second preset direction, which is set at a preset angle to the first preset direction. With this arrangement, the first cantilever 21 and the second cantilever 22 in the two directions can divide the interior of the sieve hole portion 11 into different directions and divide the sieve hole portion 11 into multiple smaller gaps, thereby further improving the opening rate of the sieve plate.
[0041] It should be noted that, as Figures 1 to 3 In this embodiment, the first preset direction can be understood as the horizontal direction along the paper surface, and the second preset direction can be understood as the vertical direction along the paper surface.
[0042] Specifically, the main frame 10 includes a partition frame 12 and a plurality of first partition ribs 13 and a plurality of second partition ribs 14 arranged at a preset angle. A plurality of sieve holes 11 are disposed on the partition frame 12, and the first partition ribs 13 and second partition ribs 14 are disposed within the partition frame 12. At least two first partition ribs 13 are connected to at least two second partition ribs 14 to form a plurality of sieve holes 11 within the partition frame. It should be noted that, in this embodiment, the first partition ribs 13 and second partition ribs 14 are disposed within the partition frame 12, dividing the partition frame 12 into a grid, with a first cantilever 21 and / or a second cantilever 22 disposed within each grid. This arrangement further enhances the opening rate of the sieve plate by creating more sieve holes within the partition frame 12 through the separating action of the first partition ribs 13 and second partition ribs 14.
[0043] In this embodiment, along a first preset direction, the main frame 10 includes a first screening frame 15 and a second screening frame 16. Both the first screening frame 15 and the second screening frame 16 are provided with multiple screen hole portions 11. The screening accuracy of the first screening frame 15 is greater than that of the second screening frame 16. It should be noted that the screening accuracy in this embodiment can be understood as the size of the screen holes (screen hole portions 11) on the screening frame, that is, the size of the screen holes on the first screening frame 15 is smaller than the size of the screen holes on the second screening frame 16. With this arrangement, by setting the first screening frame 15 and the second screening frame 16 with different screening accuracies, different screening accuracy requirements in actual work can be met; and, when the screen plate provided in this embodiment is used, its material flow direction is as follows: Figures 1 to 3 The screening accuracy is set from left to right. This setting allows the first screening frame 15 with a higher screening accuracy to effectively filter the material in the initial stage. After the material has been filtered with high accuracy, only the second screening frame 16 with a lower screening accuracy is needed to meet the requirements, thereby reducing the production cost of manufacturing a screening frame with higher accuracy.
[0044] Specifically, along the first preset direction, the length of the first screening frame 15 is A, and the length of the second screening frame 16 is B, with a ratio of 1:1 ≤ A:B ≤ 2:1. This arrangement ensures that the screen plates can meet the material screening requirements through this length ratio.
[0045] In this embodiment, each of the plurality of sieve holes 11 of the first screening frame 15 is provided with a plurality of first cantilever 21 and a plurality of second cantilever 22. Each of the plurality of second cantilever 22 is disposed between any two of the plurality of first cantilever 21, with the first ends of the plurality of first cantilever 21 and the first ends of the plurality of second cantilever 22 spaced apart. The second ends of any one of the first cantilever 21 and any one of the second cantilever 22 are also spaced apart, so that a first screening space is formed within the sieve hole 11. In this embodiment, there are two first cantilever 21s and two second cantilever 22s, such as... Figure 1 The two first cantilever arms 21 and the two second cantilever arms 22 divide the screen hole section 11 into a central first screening hole 111 and four second screening holes 112 surrounding the first screening hole 111. The four second screening holes 112 surrounding the first screening hole 111 together form a connected first screening space. Such a connected first screening space can further increase the opening rate on the screen plate and avoid the cantilever structure 20 from blocking the material through the connected first screening space.
[0046] Specifically, along the first preset direction, the distance between the first ends of any two first cantilever 21s is l1, and the distance between the second end of any first cantilever 21 and the second end of any second cantilever 22 is l2; along the second preset direction, the distance between the first ends of any two second cantilever 22s is l3. Wherein, 1:1 ≤ l1:l2 ≤ 2:1; and / or, 1:1 ≤ l1:l3 ≤ 2:1; and / or, 1:1 ≤ l2:l3 ≤ 2:1. It should be noted that l1 and l3 are also the lengths of the first screening holes 111 in the first preset direction, and l2 is the length of the second screening holes 112 in both the first and second preset directions. This arrangement ensures that the first screening frame 15 has high screening accuracy while avoiding excessive screening accuracy that could affect the passage of unseen materials.
[0047] In this embodiment, at least two first cantilever arms 21 are provided in any one of the plurality of sieve holes 11 of the second sieve frame 16, the at least two first cantilever arms 21 are arranged opposite to each other, and the second ends of the at least two first cantilever arms 21 are spaced apart. Figure 2 In this embodiment, there are two first cantilever arms 21, which are arranged opposite to each other. A third screening hole 113 is formed between the first ends of the two first cantilever arms 21. The two first cantilever arms 21 divide the screen hole portion 11 into two rectangular fourth screening holes 114. The third screening hole 113 and the fourth screening hole 114 are connected to form a second screening space. With this arrangement, the flow area of the two rectangular fourth screening holes 114 is greater than the flow area of the four second screening holes 112. This can further avoid the cantilever structure 20 from blocking the material and can also ensure screening accuracy to a certain extent.
[0048] Specifically, along the first preset direction, the length of the sieve hole portion 11 is L, and the distance between the second ends of at least two first cantilever 21 is l4, where 1:3 ≤ l4:L ≤ 1:2. It should be noted that l4 is also the length of the fourth sieve hole 114. This arrangement ensures effective sieving of materials through the third sieve hole 113 while avoiding situations where the length of the third sieve hole 113 is too small, thus hindering material passage.
[0049] In this embodiment, there are multiple partition frames 12, which are connected and arranged together. Any two adjacent partition frames 12 can be detachably connected. With this arrangement, the screen plate can be assembled according to the actual screening requirements and the size of the vibrating screen by disassembly, thereby better meeting the screening requirements of the screen plate.
[0050] Specifically, the main frame 10 and the cantilever structure 20 are integrated into one unit. This design ensures the structural strength of the screen plate, thereby minimizing the possibility of damage to the screen plate during operation.
[0051] Specifically, the main frame 10 is made of an elastic material; or, the cantilever structure 20 is made of an elastic material; or, both the main frame 10 and the cantilever structure 20 are made of elastic materials. With this arrangement, when the screen plate as a whole vibrates along with the vibrating screen, secondary vibrations can be generated on the main frame 10 and the cantilever structure 20, thereby further preventing screen clogging and facilitating the loosening and passage of sticky, wet material clumps through the screen openings.
[0052] As can be seen from the above description, the above embodiments of the present invention achieve the following technical effects: by dividing the sieve hole portion 11 on the main frame 10 by the cantilever structure 20, the opening rate of the main frame 10 is increased, thereby increasing the opening rate of the sieve plate, which can solve the technical problem of low opening rate of the sieve plate in the prior art.
[0053] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0054] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0055] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0056] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0057] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.
[0058] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A sieve plate, characterized in that, include: The main frame (10) is provided with a plurality of sieve holes (11) spaced apart. A cantilever structure (20) is disposed inside the sieve hole portion (11), and the cantilever structure (20) protrudes into the sieve hole portion (11); The cantilever structure (20) has a first end close to the sieve hole portion (11) and a second end away from the sieve hole portion (11). Multiple cantilever structures (20) are arranged circumferentially along the sieve hole portion (11), and the second ends of the multiple cantilever structures (20) are spaced apart to form a flow gap. The cantilever structure (20) includes: The first cantilever (21) extends along the first preset direction; The second cantilever (22) is spaced apart from the first cantilever (21), and the second cantilever (22) extends along a second preset direction, which is set at a preset angle to the first preset direction; Along the first preset direction, the main frame (10) includes a first screening frame (15) and a second screening frame (16). Both the first screening frame (15) and the second screening frame (16) are provided with the plurality of sieve holes (11). The screening accuracy of the first screening frame (15) is greater than that of the second screening frame (16).
2. The sieve plate according to claim 1, characterized in that, The main frame (10) includes: A partition frame (12) is provided on which the plurality of sieve holes (11) are disposed; A plurality of first dividing ribs (13) and a plurality of second dividing ribs (14) are arranged at a preset angle. The first dividing ribs (13) and the second dividing ribs (14) are arranged inside the dividing frame (12). At least two of the first dividing ribs (13) are connected to at least two of the second dividing ribs (14) to form a plurality of the sieve holes (11) inside the dividing frame (12).
3. The sieve plate according to claim 1, characterized in that, Along the first preset direction, the length of the first screening frame (15) is A, and the length of the second screening frame (16) is B, 1:1≤A:B≤2:
1.
4. The sieve plate according to claim 1, characterized in that, Each of the plurality of sieve holes (11) of the first screening frame (15) is provided with a plurality of first cantilever (21) and a plurality of second cantilever (22). Each of the plurality of second cantilever (22) is provided between any two of the plurality of first cantilever (21). The first ends of the plurality of first cantilever (21) and the first ends of the plurality of second cantilever (22) are spaced apart. In this arrangement, the second end of any one of the first cantilever (21) is spaced apart from the second end of any one of the second cantilever (22) so that a first screening space is formed in the sieve hole portion (11).
5. The sieve plate according to claim 4, characterized in that, Along the first preset direction, the distance between the first ends of any two first cantilever (21) is l1, and the distance between the second end of any one first cantilever (21) and the second end of any one second cantilever (22) is l2; along the second preset direction, the distance between the first ends of any two second cantilever (22) is l3; Where 1:1≤l1:l2≤2:1; and / or, 1:1≤l1:l3≤ 2:1; and / or, 1:1≤l2:l3≤2:1。 6. The sieve plate according to claim 1, characterized in that, At least two first cantilever arms (21) are provided in any one of the plurality of sieve holes (11) of the second screening frame (16), the at least two first cantilever arms (21) are arranged opposite to each other, and the second ends of the at least two first cantilever arms (21) are spaced apart.
7. The sieve plate according to claim 6, characterized in that, Along the first preset direction, the length of the sieve hole portion (11) is L, and the distance between the second ends of at least two first cantilever (21) is l4, 1:3≤l4:L≤1:
2.
8. The sieve plate according to claim 2, characterized in that, There are multiple partition frames (12), which are connected together, and any two adjacent partition frames (12) are detachably connected; and / or, The main frame (10) and the cantilever structure (20) are an integral structure; and / or, The main frame (10) is made of elastic material; and / or, The cantilever structure (20) is made of an elastic material.