Screen structure for separating sea sand
By incorporating multiple layers of screens and an inclined sand feeding section frame into the screen structure, the problems of traditional screens being unable to filter fine sand and being prone to clogging are solved, achieving efficient sea sand separation and sludge discharge.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SINOHYDRO BUREAU 14 CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-06-12
AI Technical Summary
Traditional screens use fixed apertures, which makes them unable to effectively filter fine sand and easily clogged by silt, affecting the filtration effect.
Design a screen structure for sea sand separation, including a coarse sand screen, a medium sand screen and a fine sand screen arranged from top to bottom. Each screen includes a sand receiving section frame and a sand conveying section frame. Different screens filter sea sand of different coarseness. The sand conveying section frame is inclined to reduce sea sand accumulation. Triangular blocks and conical blocks assist in silt separation.
It improves the filtration efficiency of sea sand, prevents mesh clogging, enhances load-bearing capacity, effectively separates silt, and improves the filtration effect of muddy liquids.
Smart Images
Figure CN224346397U_ABST
Abstract
Description
Technical Field
[0001] A screen structure for sea sand separation is disclosed, which belongs to the technical field of screens for sea sand separation. Background Technology
[0002] Sea sand mining is a crucial activity for meeting the demand for sand and gravel materials in construction, transportation, and other fields, and its efficiency and quality are of paramount importance. Screens used for sea sand separation are the core component of the screening and washing system.
[0003] In marine mining scenarios, screens are typically integrated into the sorting system of sand dredgers. The dredger uses a jet pump to pump a mixed liquid into the screen for filtration. The screen is fixed to the sorting hull to filter sea sand from the mixed liquid extracted by the jet pump. However, existing screens have the following technical problems:
[0004] 1. Traditional screens use fixed apertures, which can easily lead to problems in effectively filtering fine sand;
[0005] 2. Traditional screens are easily clogged by silt, resulting in poor filtration and discharge of muddy liquids. Utility Model Content
[0006] The purpose of this invention is to provide a screen structure for sea sand separation, which solves the problem that traditional screens with fixed apertures are prone to failing to effectively filter fine sand.
[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0008] A screen structure for separating sea sand includes screens installed on the walls of a sorting chamber. The screens include a coarse sand screen, a medium sand screen, and a fine sand screen, which are arranged sequentially from top to bottom on the walls of the sorting chamber.
[0009] Furthermore, the diameter of the sea sand filtered by the coarse sand screen is greater than 2.4 mm, the diameter of the sea sand filtered by the medium sand screen is in the range of 1.2-2.4 mm, and the diameter of the sea sand filtered by the fine sand screen is in the range of 0.6 mm-1.2 mm.
[0010] Furthermore, the coarse sand screen, medium sand screen, and fine sand screen each include a sand receiving section frame horizontally arranged on the wall of the sorting chamber and a sand conveying section frame inclinedly connected to the sand receiving section frame on the wall of the sorting chamber, as well as coarse sand screen, medium sand screen, and fine sand screen respectively arranged on the corresponding sand receiving section frame and sand conveying section frame.
[0011] Furthermore, the sand feeding section frame is inclined downward at a rate of 1°-5° at the connection point with the sand receiving section frame.
[0012] Furthermore, the sand receiving section frame includes a square frame A, a horizontal horizontal support rod A disposed on the square frame A and perpendicular to the sand feeding direction, a horizontal vertical support rod A disposed on the horizontal horizontal support rod A, and a coarse sand mesh, medium sand mesh or fine sand mesh disposed between two adjacent horizontal vertical support rods A and between the horizontal vertical support rod A and the square frame A and in contact with the horizontal horizontal support rod A.
[0013] The sand feeding section frame includes a square frame B that is inclinedly connected to the output end of the square frame A, a horizontal horizontal support rod B that is perpendicular to the sand feeding direction and is set on the square frame B, a horizontal vertical support rod B that is set on the horizontal horizontal support rod B, and a coarse sand mesh, medium sand mesh or fine sand mesh that is set between two adjacent horizontal vertical support rods B and between the horizontal vertical support rod B and the square frame B and is in contact with the horizontal horizontal support rod B.
[0014] Furthermore, the coarse sand mesh, medium sand mesh, or fine sand mesh on the sand receiving section frame is located on the same horizontal plane as the upper surface of the horizontal longitudinal support rod A, or the upper surface of the coarse sand mesh, medium sand mesh, or fine sand mesh is lower than the upper surface of the horizontal longitudinal support rod A.
[0015] The coarse sand mesh, medium sand mesh, or fine sand mesh on the sand feeding section frame is located on the same horizontal plane as the upper surface of the horizontal longitudinal support rod B, or the upper surface of the coarse sand mesh, medium sand mesh, or fine sand mesh is lower than the upper surface of the horizontal longitudinal support rod B.
[0016] Furthermore, along the length direction of the horizontal longitudinal support rod A and the horizontal longitudinal support rod B, triangular blocks are respectively provided on the upper surface of the horizontal longitudinal support rod A and the horizontal longitudinal support rod B.
[0017] Furthermore, on the side where the mixed liquid is pumped in, a number of conical blocks are provided on the triangular block.
[0018] Compared with the prior art, the advantages of this utility model are:
[0019] I. This utility model has a coarse sand screen, a medium sand screen and a fine sand screen arranged sequentially from top to bottom on the sorting chamber wall. It can filter sea sand of different coarseness through different screens, effectively avoiding the problem of not being able to effectively filter fine sand. It not only improves the filtration efficiency, but also effectively prevents the problem of easy clogging of the mesh.
[0020] II. This utility model defines coarse sand screen, medium sand screen and fine sand screen, including a sand receiving section frame and a sand delivery section frame that is inclinedly connected to the sand receiving section frame, and coarse sand screen, medium sand screen and fine sand screen respectively set on the corresponding sand receiving section frame and sand delivery section frame. It not only ensures the force strength when the jet pump pumps the mixed liquid through the sand receiving section frame, but also reduces the accumulation of sea sand through the inclined sand delivery section frame, so as to improve the filtration effect and reduce the residence time of sea sand on the screen.
[0021] Third, the sand feeding section frame of this utility model is inclined downward at 1°-5° at the connection with the sand receiving section frame. The purpose is to prevent the problem of excessive inclination and high space requirements.
[0022] IV. The present invention limits the way the sand delivery section frame, the sand receiving section frame and the coarse sand mesh, medium sand mesh or fine sand mesh are matched. The purpose is to make it strong in load-bearing capacity, and also to facilitate the setting of triangular blocks on the horizontal longitudinal support rod A and the horizontal longitudinal support rod B. This allows the triangular blocks to collide with the mixed liquid pumped in by the jet pump and come into contact with the sludge attached to them, so as to separate the sludge and facilitate the filtration and discharge of the sludge.
[0023] Fifth, this utility model has multiple conical blocks on the triangular block, the purpose of which is to further facilitate the contact between the conical blocks and the sludge, so as to separate the sludge, facilitate the filtration and discharge of the sludge, and ultimately achieve a better filtration and discharge effect of the sludge-laden liquid. Attached Figure Description
[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is a schematic diagram of the structure of this utility model installed on the sorting chamber wall;
[0026] Figure 2 This is a schematic diagram of the structure of the coarse sand screen of this utility model;
[0027] Figure 3 This is a schematic diagram of the structure of the medium sand screen in this utility model;
[0028] Figure 4 This is a schematic diagram of the structure of the fine sand screen of this utility model;
[0029] Figure 5 This is a schematic diagram of the connection between the sand receiving section frame and the sand delivery section frame in this utility model;
[0030] Figure 6 This is a schematic diagram of the structure of the triangular block with a conical block on it in this utility model;
[0031] In the diagram: 1-Sorting chamber wall, 2-Screen, 3-Coarse sand screen, 4-Medium sand screen, 5-Fine sand screen, 6-Sand receiving section frame, 7-Sand conveying section frame, 8-Coarse sand screen, 9-Medium sand screen, 10-Fine sand screen, 11-Square frame A, 12-Horizontal support rod A, 13-Horizontal longitudinal support rod A, 14-Square frame B, 15-Horizontal support rod B, 16-Horizontal longitudinal support rod B, 17-Triangular block, 18-Conical block. Detailed Implementation
[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0034] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model and simplifying the description, and 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 of this utility model.
[0035] Furthermore, the terms "first," "second," and "third" are used only for distinguishing descriptions and should not be interpreted as indicating or implying relative importance.
[0036] Furthermore, the use of terms such as "horizontal," "vertical," and "suspended" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0037] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0038] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.
[0039] Example 1
[0040] To address the problem that traditional screens with fixed apertures are ineffective at filtering fine sand, such as... Figure 1-6 As shown, a screen structure for sea sand separation is provided, including a screen 2 installed on the sorting chamber wall 1. The screen 2 includes a coarse sand screen 3, a medium sand screen 4, and a fine sand screen 5, which are arranged sequentially from top to bottom on the sorting chamber wall 1. In practice, the coarse sand screen 3, medium sand screen 4, and fine sand screen 5 are welded or / and fixed to the sorting chamber wall 1 sequentially from top to bottom using bolts and nuts. The spacing between the coarse sand screen 3 and the medium sand screen 4, and the spacing between the medium sand screen 4 and the fine sand screen 5, are set according to actual needs. After the mixed liquid is pumped into the coarse sand screen 3 by a jet pump, the coarse sand will be filtered through the coarse sand screen 3, while the mixed medium and fine sand will be filtered sequentially through the medium sand screen 4 and the fine sand screen 5, and the filtered sand will be transported to a designated location. In this embodiment, coarse sand screen, medium sand screen and fine sand screen are arranged sequentially from top to bottom on the sorting chamber wall. Different screens can filter sea sand of different coarseness, effectively avoiding the problem of not being able to effectively filter fine sand. This not only improves the filtration efficiency, but also effectively prevents the problem of easy clogging of the mesh.
[0041] Example 2
[0042] Based on Example 1, the coarse sand screen 3 filters sea sand with a diameter greater than 2.4 mm, such as 2.5 mm; the medium sand screen 4 filters sea sand with a diameter range of 1.2-2.4 mm, such as 2.0 mm; and the fine sand screen 5 filters sea sand with a diameter range of 0.6 mm-1.2 mm, such as 0.7 mm. This makes it suitable for sea sand mining in different regions.
[0043] Example 3
[0044] Based on Example 2, the coarse sand screen 3, medium sand screen 4, and fine sand screen 5 each include a sand receiving section frame 6 horizontally arranged on the sorting chamber wall 1 and a sand conveying section frame 7 inclinedly connected to the sand receiving section frame 6 on the sorting chamber wall 1, as well as coarse sand screens 8, medium sand screens 9, and fine sand screens 10 respectively arranged on the corresponding sand receiving section frame 6 and sand conveying section frame 7. The coarse sand screen, medium sand screen, and fine sand screen are defined to include a sand receiving section frame and a sand conveying section frame inclinedly connected to the sand receiving section frame, and coarse sand screens, medium sand screens, and fine sand screens respectively arranged on the corresponding sand receiving section frame and sand conveying section frame. This not only ensures the strength of the jet pump when pumping the mixed liquid in through the sand receiving section frame, but also reduces the accumulation of sea sand through the inclined sand conveying section frame, thereby improving the filtration effect and reducing the residence time of sea sand on the screen. The sand delivery section frame 7 is inclined downward at 1°-5°, such as 2°, 3°, or 4°, at the connection point with the sand receiving section frame 6. This is to prevent excessive inclination and high space requirements.
[0045] Example 4
[0046] Based on embodiment 3, the sand receiving section frame 6 includes a square frame A11, a horizontal horizontal support rod A12 perpendicular to the sand feeding direction and set on the square frame A11, a horizontal vertical support rod A13 set on the horizontal horizontal support rod A12, and a coarse sand mesh 8, a medium sand mesh 9 or a fine sand mesh 10 set between two adjacent horizontal vertical support rods A13 and between the horizontal vertical support rod A13 and the square frame A11 and in contact with the horizontal horizontal support rod A12;
[0047] The sand feeding section frame 7 includes a square frame B14 that is obliquely connected to the output end of the square frame A11, a horizontal horizontal support rod B15 perpendicular to the sand feeding direction and set on the square frame B14, a horizontal vertical support rod B16 set on the horizontal horizontal support rod B15, and a coarse sand mesh 8, a medium sand mesh 9, or a fine sand mesh 10 set between two adjacent horizontal vertical support rods B16 and between the horizontal vertical support rod B16 and the square frame B14, and in contact with the horizontal horizontal support rod B15. The coarse sand mesh 8, medium sand mesh 9, or fine sand mesh 10 on the sand receiving section frame 6 is on the same horizontal plane as the upper surface of the horizontal vertical support rod A13, or the upper surface of the coarse sand mesh 8, medium sand mesh 9, or fine sand mesh 10 is lower than the upper surface of the horizontal vertical support rod A13.
[0048] The coarse sand mesh 8, medium sand mesh 9, or fine sand mesh 10 on the sand feeding section frame 7 are located on the same horizontal plane as the upper surface of the horizontal longitudinal support rod B16, or the upper surface of the coarse sand mesh 8, medium sand mesh 9, or fine sand mesh 10 is lower than the upper surface of the horizontal longitudinal support rod B16.
[0049] This embodiment limits the way the sand feeding section frame and the sand receiving section frame are matched with coarse sand mesh, medium sand mesh, or fine sand mesh. The purpose is to ensure strong load-bearing capacity and facilitate the filtration of various coarse and fine sea sand and the discharge of mud and water. It also facilitates the installation of triangular blocks on horizontal longitudinal support rods A and B.
[0050] Example 5
[0051] Based on Example 4, triangular blocks 17 are respectively provided on the upper surfaces of the horizontal longitudinal support rods A13 and B16 along their length direction. These triangular blocks 17 can be evenly distributed along the horizontal longitudinal support rods A13 and B16, or other arrangements can be used, as required. The triangular blocks collide with the mixed liquid pumped in by the jet pump, and come into contact with the attached sludge to separate the sludge, facilitating its filtration and discharge. On the side where the mixed liquid is pumped in, multiple conical blocks 18 are provided on the triangular blocks 17 to further facilitate contact between the conical blocks and the sludge, thereby separating the sludge and facilitating its filtration and discharge, ultimately resulting in excellent filtration and discharge of the sludge-laden liquid.
Claims
1. A screen structure for separating sea sand, comprising a screen (2) disposed on the bulkhead (1) of a sorting chamber, characterized in that: The screen (2) includes a coarse sand screen (3), a medium sand screen (4) and a fine sand screen (5) arranged sequentially from top to bottom on the wall of the sorting chamber (1); The coarse sand screen (3), medium sand screen (4) and fine sand screen (5) respectively include a sand receiving section frame (6) horizontally set on the sorting chamber wall (1) and a sand conveying section frame (7) set on the sorting chamber wall (1) and inclinedly connected to the sand receiving section frame (6), as well as coarse sand screen (8), medium sand screen (9) and fine sand screen (10) respectively set on the corresponding sand receiving section frame (6) and sand conveying section frame (7).
2. The screen structure for sea sand separation according to claim 1, characterized in that: The coarse sand screen (3) filters sea sand with a diameter greater than 2.4 mm, the medium sand screen (4) filters sea sand with a diameter range of 1.2-2.4 mm, and the fine sand screen (5) filters sea sand with a diameter range of 0.6 mm-1.2 mm.
3. The screen structure for sea sand separation according to claim 2, characterized in that: The sand delivery section frame (7) is inclined downward at 1°-5° at the connection point with the sand receiving section frame (6).
4. The screen structure for sea sand separation according to claim 3, characterized in that: The sand receiving section frame (6) includes a square frame A (11), a horizontal horizontal support rod A (12) set on the square frame A (11) perpendicular to the sand feeding direction, a horizontal longitudinal support rod A (13) set on the horizontal horizontal support rod A (12), and a coarse sand mesh (8), a medium sand mesh (9) or a fine sand mesh (10) set between two adjacent horizontal longitudinal support rods A (13) and between the horizontal longitudinal support rod A (13) and the square frame A (11) and in contact with the horizontal horizontal support rod A (12); The sand feeding section frame (7) includes a square frame B (14) that is inclinedly connected to the output end of the square frame A (11), a horizontal horizontal support rod B (15) that is perpendicular to the sand feeding direction and is set on the square frame B (14), a horizontal longitudinal support rod B (16) that is set on the horizontal horizontal support rod B (15), and a coarse sand mesh (8), a medium sand mesh (9) or a fine sand mesh (10) that is set between two adjacent horizontal longitudinal support rods B (16) and between the horizontal longitudinal support rod B (16) and the square frame B (14) and in contact with the horizontal horizontal support rod B (15).
5. The screen structure for sea sand separation according to claim 4, characterized in that: The coarse sand mesh (8), medium sand mesh (9) or fine sand mesh (10) on the sand receiving section frame (6) are on the same horizontal plane as the upper surface of the horizontal longitudinal support rod A (13), or the upper surface of the coarse sand mesh (8), medium sand mesh (9) or fine sand mesh (10) is lower than the upper surface of the horizontal longitudinal support rod A (13). The coarse sand mesh (8), medium sand mesh (9) or fine sand mesh (10) on the sand delivery section frame (7) are on the same horizontal plane as the upper surface of the horizontal longitudinal support rod B (16), or the upper surface of the coarse sand mesh (8), medium sand mesh (9) or fine sand mesh (10) is lower than the upper surface of the horizontal longitudinal support rod B (16).
6. A screen structure for sea sand separation according to claim 4 or 5, characterized in that: Along the length direction of the horizontal longitudinal support rod A (13) and the horizontal longitudinal support rod B (16), triangular blocks (17) are respectively provided on the upper surface of the horizontal longitudinal support rod A (13) and the horizontal longitudinal support rod B (16).
7. The screen structure for sea sand separation according to claim 6, characterized in that: Located on the side where the mixed liquid is pumped in, a number of conical blocks (18) are provided on the triangular block (17).