A screen deck for a tilt-up installation and a vibrating screen
By designing a sieve plate with a complementary angle between the central axis of the sieve holes and the upper surface of the sieve plate, the problem of reduced effective sieve hole size when traditional sieve plates are installed at an angle is solved, achieving efficient screening and reducing clogging, thus improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI XINRONG MINING
- Filing Date
- 2025-07-22
- Publication Date
- 2026-07-21
AI Technical Summary
When traditional screen plates are installed at an angle, the effective screening size of the screen holes decreases, resulting in reduced screening accuracy, frequent clogging, and impact on production efficiency and sorting effect.
Design a sieve plate with the angle formed between the central axis of the sieve hole and the upper surface of the sieve plate being complementary to the inclined installation angle of the sieve plate, to ensure that the projected size of the sieve hole in the direction of gravity remains unchanged, and using corrosion-resistant and wear-resistant materials and CNC machining.
It maintains screening accuracy, improves screening efficiency by more than 20%, reduces clogging, extends the cleaning cycle, and has good structural compatibility.
Smart Images
Figure CN224525275U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of mineral processing equipment, specifically relating to a screen plate and a vibrating screen for inclined installation of the screen surface. Background Technology
[0002] In recent years, vibrating screens have been widely used in mining, metallurgy, and other industries for classifying and screening ore particles. Traditional screen plates, such as... Figure 5 As shown, the central axis of the screen holes is perpendicular to the plane of the screen plate (i.e., at a 90° angle). When the screen plate is installed on the vibrating screen at an inclination angle of 15°~20° (relative to the horizontal plane), the projected size (effective screening size) of the screen holes in the direction of gravity will decrease due to the inclination angle. For example, when the screen hole diameter is Φ10mm and the screen surface installation inclination angle θ2=18°: the effective screening size = 10 × cos18° ≈ 10 × 0.951 = 9.51mm. This will cause the actual screening accuracy to be higher than the design value, resulting in some qualified particles not being able to pass through, causing the "over-screening" phenomenon. It will also reduce the effective flow area of the screen holes, increase the resistance of material passage, and easily clog the screen holes, resulting in a significant reduction in screening efficiency (generally a loss of 10%-25%), affecting production capacity and sorting effect. Summary of the Invention
[0003] The purpose of this utility model is to provide a sieve plate with a simple structure and easy processing, thereby solving the problems of "over-sieving" phenomenon of traditional sieve plates, easy clogging of sieve holes, significant reduction in sieving efficiency, and impact on production capacity and sorting effect.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a sieve plate for inclined installation of a sieve surface, comprising a sieve plate body and sieve holes, wherein the sieve holes are evenly distributed throughout the sieve plate body, and the central axis of the sieve holes forms a sieve hole angle θ1 with the upper sieve surface of the sieve plate body. When the sieve plate is installed at an inclination, the lower sieve surface of the sieve plate body forms a sieve surface installation inclination angle θ2 with the horizontal plane, and the sieve hole angle θ1 and the sieve surface installation inclination angle θ2 are complementary angles.
[0005] Furthermore, the sieve plate is made of corrosion-resistant and wear-resistant material.
[0006] Furthermore, the overall thickness of the sieve plate is 10 mm, and the sieve holes on the sieve plate are integrally machined using CNC machining equipment.
[0007] Furthermore, the sieve holes are round holes.
[0008] Furthermore, the sieve holes are square holes.
[0009] Furthermore, the sieve holes are elongated holes.
[0010] A vibrating screen is provided, wherein the vibrating screen is equipped with the screen plate described above, the screen plate is installed at an incline on the vibrating screen, and the central axis of the screen holes on the screen plate is perpendicular to the horizontal plane.
[0011] Furthermore, the vibrating screen is a self-centering vibrating screen.
[0012] Compared with the prior art, this utility model has the following advantages: 1. Maintain a constant effective screening size, that is, the size of the screen aperture in the direction of material passage (gravity direction) is equal to the design aperture, to ensure that the screening accuracy meets the design requirements; 2. Improve screening efficiency. Actual tests show that compared with traditional vertical perforated screen plates, the present invention can improve screening efficiency by more than 20%. 3. Reduce clogging, increase effective flow area, reduce the probability of material blockage, and extend the screening cycle; 4. The structure is compatible and does not change the main structure of the screening machine. Only the screen plate manufacturing process is optimized, making it easy to promote. Attached Figure Description
[0013] Figure 1 This is a partial cross-sectional view of a sieve plate for inclined installation of the sieve surface according to the present invention. Figure 2 yes Figure 1 The first top-view structural diagram; Figure 3 yes Figure 1 The second top-view structural diagram; Figure 4 yes Figure 1 A schematic diagram of the third type of top view structure; Figure 5 This is a schematic diagram of the prior art of this utility model.
[0014] As shown in the figure: 1-sieve plate body, 2-sieve holes. Detailed Implementation
[0015] The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings.
[0016] like Figure 1 As shown, a sieve plate for inclined installation includes a sieve plate body 1 and sieve holes 2. The sieve holes 2 are evenly distributed throughout the sieve plate body 1. The central axis of the sieve holes 2 forms a sieve hole angle θ1 with the upper sieve surface of the sieve plate body 1. When the sieve plate is installed at an incline, the lower sieve surface of the sieve plate body 1 forms a sieve surface installation inclination angle θ2 with the horizontal plane. The sieve hole angle θ1 and the sieve surface installation inclination angle θ2 are complementary angles. In this embodiment, the included angle θ1 of the sieve holes and the installation inclination angle θ2 of the sieve surface are complementary angles, that is, the sum of θ1 and θ2 is 90°. The advantage of this is that when the sieve plate is installed at an inclination angle of 15°~20° (relative to the horizontal plane), the projected size of the sieve holes in the direction of gravity (effective screening size) will not be reduced due to the installation inclination angle θ2 of the sieve surface. For example, when the screen hole diameter is Φ10mm and the screen surface installation inclination angle θ2=18°, the screen hole included angle θ1=90°-18°=72°. At this time, on the inclined screen plate, the included angle between the central axis of screen hole 2 and the horizontal plane is θ1+θ2=72°+18°=90°. That is, the central axis of screen hole 2 is parallel to the vertical line in the direction of gravity. Therefore, the screen hole diameter is Φ10mm, and the effective screening size of the screen hole is also 10mm. The projected size of the screen hole in the direction of gravity (effective screening size) will not decrease due to the screen surface installation inclination angle θ2.
[0017] like Figures 1 to 4 As shown, the sieve plate is made of corrosion-resistant and wear-resistant material with an overall thickness of 10 mm. The sieve holes 2 on the sieve plate are integrally machined by CNC machining equipment. In this embodiment, the sieve plate is made of corrosion-resistant and wear-resistant material to ensure the service life of the sieve plate; the sieve holes 2 on the sieve plate are integrally machined by CNC machining equipment to ensure the machining accuracy of the sieve holes 2.
[0018] like Figures 2 to 4 As shown, the sieve hole 2 can be a round hole, a square hole, or a long strip hole; In this embodiment, the shape of the sieve hole 2 can be selected according to different minerals. That is, according to different mineral screening requirements, the sieve hole 2 can be a round hole, a square hole, or a long strip hole.
[0019] like Figure 1 As shown, the vibrating screen is equipped with the screen plate described above. The screen plate is installed at an incline on the vibrating screen, wherein the central axis of the screen hole 2 on the screen plate is perpendicular to the horizontal plane. In this embodiment, the screen plate is installed at an inclination on the vibrating screen, wherein the central axis of the screen hole 2 on the screen plate is perpendicular to the horizontal plane. This is a necessary condition that the projected size (effective screening size) of the screen hole 2 in the direction of gravity will not be reduced due to the installation inclination angle θ2 of the screen surface.
[0020] The vibrating screen described above is a self-centering vibrating screen. In this embodiment, the self-centering vibrating screen can effectively improve screening efficiency and ensure the stability of the equipment.
[0021] The specific working principle of this utility model is as follows: First, select a good sieve plate, ensuring that the included angle θ1 of the sieve holes on the sieve plate and the installation inclination angle θ2 of the sieve surface are complementary angles; Then install the selected screen plate on the vibrating screen, ensuring that when the screen plate is installed at an angle on the vibrating screen, the central axis of the screen holes on the screen plate is perpendicular to the horizontal plane. Finally, based on the screen plate installed on the vibrating screen, minerals with suitable screen hole shapes are selected for screening and beneficiation operations.
[0022] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any simple modifications, equivalent substitutions, improvements, etc., made within the technical concept of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A screen deck for inclined installation of a screen, comprising a screen deck body (1) and screen openings (2) which are evenly distributed over the screen deck body (1), characterized in that: The central axis of the sieve hole (2) and the upper sieve surface of the sieve plate body (1) form a sieve hole angle θ1. When the sieve plate is installed at an inclination, the lower sieve surface of the sieve plate body (1) and the horizontal plane form a sieve surface installation inclination angle θ2. The sieve hole angle θ1 and the sieve surface installation inclination angle θ2 are complementary angles.
2. A screen deck for use in a screen assembly having a plurality of screen panels mounted in a sloped orientation, the screen deck of claim 1, wherein: The sieve plate is made of corrosion-resistant and wear-resistant material.
3. A screen deck for a sloped installation of a screen as claimed in claim 2, characterized in that: The screen plate has an overall thickness of 10 mm, and the screen holes (2) on the screen plate are formed by CNC machining equipment.
4. A screen deck for a sloped installation of a screen as claimed in claim 3, characterized in that: The sieve hole (2) is a round hole.
5. A sieve plate for inclined installation of a sieve surface according to claim 3, characterized in that: The sieve hole (2) is a square hole.
6. A sieve plate for inclined installation of a sieve surface according to claim 3, characterized in that: The sieve hole (2) is an elongated hole.
7. A vibrating screen, characterized in that: The vibrating screen is equipped with a screen plate as described in any one of claims 1 or 6, the screen plate being installed at an angle on the vibrating screen, wherein the central axis of the screen holes (2) on the screen plate is perpendicular to the horizontal plane.
8. A vibrating screen according to claim 7, characterized in that: The vibrating screen is a self-centering vibrating screen.