A modular screen structure
By using a combined screen structure with screen plate lifting and cross-shaped baffle design, the problem of screen hole clogging is solved, enabling continuous and stable operation and efficient screening, while reducing maintenance costs and resource consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PANZHIHUA CHIRUI MINING & METALLURGY TECH CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-07-24
AI Technical Summary
Existing screen structures are prone to clogging when processing wet, sticky or fine-particle materials, leading to decreased screening efficiency, reduced throughput, and increased maintenance costs. Traditional cleaning methods also affect production continuity and consume a lot of resources.
It adopts a combined screen structure, and through the design of detachable screen plates and cross-shaped baffles, it uses the lifting and lowering movement of the screen plates to break up and bridge materials, thus preventing screen hole blockage.
It achieves continuous and stable operation of the screening process, reduces maintenance costs and resource consumption, and improves screening efficiency. It is particularly suitable for processing wet and sticky ores and fine-particle materials.
Smart Images
Figure CN224542245U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ore screening technology, and in particular to a combined screen structure. Background Technology
[0002] Ore screening is a crucial process in industries such as mining, building materials, and metallurgy, and its efficiency directly affects the processing capacity of the production line and the quality of the final product. As a core piece of equipment, the design of the screening machine's screen structure is particularly critical.
[0003] In actual production, especially when processing wet, sticky ores, fine-grained materials, or materials prone to debris generation, screen clogging is a common and challenging problem. Material particles easily get stuck in the screen holes, particularly forming "bridging" phenomena at the edges or inside the holes, severely hindering the passage of subsequent materials. This leads to a sharp decline in screening efficiency, reduced throughput, increased energy consumption, and even the need for frequent shutdowns for cleaning. This not only affects production efficiency but also increases manual maintenance costs and safety hazards.
[0004] Existing screen structures are mostly integral or fixed designs. To solve the problem of screen clogging, the main method is to use high-pressure water or gas to flush the screen after shutdown. This method has a relatively good cleaning effect, but it requires shutdown, affecting continuous production, and consumes a lot of water or gas resources. It is not suitable for certain working conditions (such as water shortages or dusty environments) and also generates additional wastewater or exhaust gas treatment problems. Replacing the screen is another method, which solves the problem, but it is costly, involves long downtime, and is inefficient. Utility Model Content
[0005] In view of the technical problems existing in the background art, the utility model provides a combined screen structure that can prevent materials from clogging in the screen holes during the screening process.
[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows: A combined screen structure includes a screen structure detachably installed inside a screening machine. The screen structure includes at least two screen plates with a plurality of screen holes. When the screen plates are fitted together, the screen holes on adjacent screen plates are aligned. A horizontal baffle is provided in the screen hole of one screen plate, and a vertical baffle is provided in the screen hole of the other screen plate. When the screen holes are aligned, the horizontal baffle and the vertical baffle are arranged in a cross shape. One screen plate is adjustable in height.
[0007] Preferably, the screen plate includes screen plate I, and a support plate is provided on the screening machine. The screen plate I is provided with a slot, and the screen plate I is supported on the support plate of the screening machine through the slot.
[0008] Preferably, the support plate is provided with threaded holes, and the sieve plate I is provided with connecting holes. The connecting holes and threaded holes are aligned, and bolts are provided in the connecting holes and threaded holes.
[0009] Preferably, the screen structure further includes a driving component, and the screen plate further includes a screen plate II, which is disposed below the screen plate I, and the driving component is connected to the screen plate II.
[0010] Preferably, a material collection trough is provided at one end of the screening machine, and the driving component is supported in the material collection trough.
[0011] Preferably, a protective support is provided inside the collection trough. The protective support includes a cylinder and a cover plate, and the cover plate is detachably connected to one end of the cylinder.
[0012] Preferably, the cover plate is an annular structure with an opening in the middle, and the driving component is disposed inside the cylinder, with one end of the driving component passing through the opening of the cover plate.
[0013] Preferably, the sieve plate I is provided with sieve holes I, and the vertical baffle is provided in the sieve holes I; the sieve plate II is provided with sieve holes II, and the horizontal baffle is provided in the sieve holes II.
[0014] This utility model has the following advantages and beneficial effects: In this utility model: 1. The lifting and lowering movement of the sieve plate II drives the horizontal and vertical baffles to slide relative to each other. The cross structure can break up the "bridging" of materials in the sieve holes and actively prevent blockage. This design can avoid blockage from the source and make the screening process continuous and stable.
[0015] Second, the structure is simple and the maintenance cost is low. No additional cleaning device is required. The anti-clogging is achieved by the movement of the screen plate itself, which reduces the number of equipment parts. The screen plate is detachable, which makes it easy to replace the worn screen plate individually. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of a combined screen structure and a screening machine proposed in this utility model; Figure 2 This is a schematic diagram showing the installation position of a combined screen structure proposed in this utility model; Figure 3 This is a schematic diagram showing the position of the support plate in a combined screen structure proposed in this utility model. Figure 4 This is a schematic diagram of the sieve plate I structure of a combined sieve structure proposed in this utility model; Figure 5 This is a schematic diagram of the sieve plate II structure of a combined sieve structure proposed in this utility model; Figure 6This is a cross-sectional view of a combined screen structure proposed in this utility model.
[0017] Reference numerals: 1-Screen plate I, 11-Screen hole I, 12-Vertical stop bar, 13-Slot, 14-Connecting hole, 2-Screen plate II, 21-Screen hole II, 22-Horizontal stop bar, 3-Support plate, 31-Threaded hole, 4-Bolt, 5-Drive component, 6-Collection trough, 7-Protective support, 71-Cylinder, 72-Cover plate, 721-Opening, 8-Screening machine. Detailed Implementation
[0018] 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 some embodiments of this utility model, but not all embodiments.
[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0020] Example like Figures 1-6 As shown, a combined screen structure is mainly used to prevent wet, sticky, or fine-particle materials from clogging the screen holes during the screening process. Through the relative movement of the double screen plates and the cross-shaped baffle design, active anti-clogging is achieved, which is suitable for various screening machines.
[0021] like Figures 1-6As shown, the screen structure includes at least two screen plates and a drive component 5. The screen plates include screen plate I1 and screen plate II2. Screen plate I1 is a rectangular metal plate (such as a steel plate or a wear-resistant alloy plate) and is horizontally set on the upper part of the screening machine 8. A number of screen holes I11 are provided through the surface of screen plate I1. The number of screen holes I11 are evenly spaced and are circular or square in shape (square in this embodiment). Vertical baffles 12 are installed inside each sieve hole I11. A vertical baffle 12 is welded to the inner wall of each sieve hole I11. The vertical baffle 12 is a cylindrical steel rod with a length consistent with the length of the sieve plate I1 and located in the diameter direction of the sieve hole I11. Several support plates 3 are installed on the screening machine 8, respectively positioned on both sides of the sieve groove of the screening machine 8. Recessed slots 13 are provided at the lower ends of both sides of the sieve plate I1. The width of the slots 13 matches the thickness of the support plates 3 of the screening machine 8. The sieve plate I1 is mounted on the support plates 3 through the slots 13, achieving initial positioning. The screen plate I1 has connecting holes 14 on both sides. The connecting holes 14 are located at the slot 13. The corresponding support plate 3 has the same number of threaded holes 31 as the connecting holes 14. When the slot 13 and the support plate 3 are connected, the connecting holes 14 and the threaded holes 31 are aligned. Bolts 4 are installed in the connecting holes 14 and the threaded holes 31. The bolts 4 pass through the connecting holes 14 and engage with the threaded holes 31 to fasten the screen plate I1 to the support plate 3. The two are connected in a detachable manner, which is convenient for disassembly and assembly, and also convenient for the screen plate I1 to be removed and cleaned later.
[0022] like Figures 2-6 As shown, screen plate II2 is a rectangular metal plate with the same dimensions as screen plate I1, and is set parallel to screen plate I1 directly below it. Several screen holes II21 are provided through the surface of screen plate II2. The number, position and size of screen holes II21 are completely consistent with the screen holes I11 of screen plate I1, ensuring that the screen holes are aligned when the two screen plates are attached. A horizontal baffle 22 is vertically welded to the inner wall of each screen hole II21. The structure of the horizontal baffle 22 is the same as that of the vertical baffle 12, but the direction is perpendicular to the vertical baffle 12. When screen plate I1 and screen plate II2 are attached and the screen holes are aligned, the horizontal baffle 22 and the vertical baffle 12 intersect at the center of the screen hole to form a "+" shape. The "+" shaped channel is the screening area, and materials such as ore fall from each channel position.
[0023] like Figures 1-6As shown, a material collection trough 6 is provided at the lower end of the screening machine 8. The driving component is supported in the material collection trough. The material collection trough 6 is a box-shaped structure opened at the bottom of the screening machine 8, located directly below the screen plate II2, and is used to collect materials passing through the screen holes. A protective support 7 is welded to the bottom of the material collection trough 6. The protective support 7 includes a cylinder 71 and a cover plate 72. The cylinder 71 is a cylindrical steel cylinder with an open top, which is vertically welded to the bottom of the material collection trough 6. The internal space is sufficient to accommodate the cylinder of the driving component 5. The driving component 5 is preferably a hydraulic cylinder (or air cylinder, electric push rod), which is symmetrically distributed below the screen plate II2. The cylinder of the driving component 5 is installed in the protective support 7. The telescopic end passes upward through the opening 721 of the cover plate 72 and is welded to the center of the lower surface of the screen plate II2. The cover plate 72 is an annular steel plate, which is detachably connected to the upper end of the cylinder 71 by bolts. A circular opening 721 is opened in the middle, with a diameter slightly larger than the diameter of the telescopic end of the driving component 5. The cover plate 72 prevents materials from entering the cylinder 71 and provides guidance for the telescopic end of the drive component 5. The shaft of the drive component 5 can be raised and lowered to ensure that the screen plate II2 can be raised and lowered to fit or separate from the screen plate I1. During normal screening, the screen plate I1 and the screen plate II2 are in contact, and materials such as ore fall from the cross-shaped screen holes into the collection trough 6. When the material forms a "bridging" phenomenon at the edge or inside of the screen hole, the drive component 5 is moved. The drive component 5 drives the screen plate II2 to gradually move away from the screen plate I1. At this time, the size of the material falling becomes larger, and the material can fall normally from the screen hole, preventing material accumulation.
[0024] Screening principle: Material is fed from above screen plate I1. Material larger than the screen hole size is intercepted and discharged along the screen surface. Material smaller than the screen hole size falls into the collection trough 6 through the gap of the cross baffle. When the material forms a "bridge" in the screen hole, the drive component 5 drives screen plate II2 to descend. The horizontal baffle 22 moves down accordingly and slides relative to the vertical baffle 12. The cross structure shears and breaks the "bridged" material, causing it to fall. The drive component 5 then drives screen plate II2 to rise and reset. The baffles (vertical baffle 12 and horizontal baffle 22) return to the cross state, and screening continues.
[0025] This invention can greatly avoid screen hole clogging. However, when screen plate I and screen plate II separate, some large-sized materials will fall into the collection trough. The large-sized materials that fall in can be processed after screening and will not affect the overall screening efficiency.
[0026] This invention solves the problem of screen blockage by using a liftable screen plate to adjust the screen aperture size and actively crushing and "bridging" materials through a cross-shaped structure. Compared to traditional methods of stopping the machine for cleaning, this method eliminates the need for downtime, significantly improving screening efficiency and continuous operation capability. It is particularly suitable for processing wet, sticky ores, fine-particle materials, and other easily clogged scenarios.
[0027] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A combined screen structure, characterized in that: The system includes a screen structure, which is detachably installed inside a screening machine. The screen structure includes at least two screen plates with a plurality of screen holes. When the screen plates are in contact with each other, the screen holes on adjacent screen plates are aligned. A horizontal baffle is provided in the screen hole of one screen plate, and a vertical baffle is provided in the screen hole of the other screen plate. When the screen holes are aligned, the horizontal baffle and the vertical baffle are arranged in a cross shape. One screen plate is connected to a driving component for transmission. The driving component is used to control the two screen plates to move closer or further apart.
2. The combined screen structure according to claim 1, characterized in that: The screen plate includes screen plate I, and a support plate is provided on the screening machine. The screen plate I is provided with a slot, and the screen plate I is supported on the support plate of the screening machine through the slot.
3. The combined screen structure according to claim 2, characterized in that: The support plate is provided with threaded holes, and the sieve plate I is provided with connecting holes. The connecting holes and threaded holes are aligned, and bolts are provided in the connecting holes and threaded holes.
4. The combined screen structure according to claim 2, characterized in that: The sieve plate also includes sieve plate II, which is disposed below sieve plate I, and the driving component is connected to sieve plate II.
5. A combined screen structure according to claim 4, characterized in that: One end of the screening machine is provided with a material collection trough, and the driving component is supported in the material collection trough.
6. The combined screen structure according to claim 5, characterized in that: The material collection trough is equipped with a protective support, which includes a cylinder and a cover plate. The cover plate is detachably connected to one end of the cylinder.
7. A combined screen structure according to claim 6, characterized in that: The cover plate is an annular structure with an opening in the middle, and the driving component is disposed inside the cylinder, with one end of the driving component passing through the opening of the cover plate.
8. The combined screen structure according to claim 4, characterized in that: The sieve plate I is provided with sieve holes I, and the vertical baffle is provided in the sieve holes I. The sieve plate II is provided with sieve holes II, and the horizontal baffle is provided in the sieve holes II.