A structure of a de-blocking vibrating screen for ore dressing

Abstract

The utility model relates to the technical field of vibrating screen, concretely to a kind of anti-blocking vibrating screen structure for mineral separation, including rack and mounting bracket, cambered screen plate is installed on the mounting bracket, trapezoidal hole is opened in the cambered screen plate, slidingly installed with dynamic plate in the cambered screen plate, third slide bar is fixedly installed on the mounting bracket, dynamic plate and third slide bar slidingly sleeve joint, two groups of third spring are sleeved on the third slide bar, two ends of two groups of third spring are respectively fixedly connected with dynamic plate and mounting bracket, sealing rubber sheet is fixedly bonded on the dynamic plate, sealing rubber sheet is respectively fixedly connected with dynamic plate and mounting bracket, by setting slidable dynamic plate in cambered screen plate, and using third spring provides sustained restoring force, so that dynamic plate can produce self-adapting micro-displacement when being impacted or vibrated by material, and dynamic adjustment mechanism can effectively destroy the adhesion accumulation of material near trapezoidal screen hole, reduce the occurrence of static jam.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screen technology, specifically to an anti-clogging vibrating screen structure for mineral processing. Background Technology

[0002] Currently, most mineral processing plants have widely automated their crushing and screening processes. As a key link in the mineral processing production process, this process directly determines the particle size distribution of materials in subsequent grinding and beneficiation, and has a significant impact on grinding energy consumption, mineral processing recovery rate, and even the overall economic and technical indicators of the plant. Constructing a stable, efficient, clean, and digital crushing and screening system and implementing the principle of more crushing and less grinding are important measures for the mineral processing industry to achieve energy conservation and consumption reduction.

[0003] In actual production, crushing operations typically involve the continuous operation of multiple pieces of equipment. The ore crushing volume is large, the dust generation is high, and the working environment is relatively harsh. In addition, the belt conveyor lines are long, and stone particles are easily scattered, resulting in a large demand for on-site inspection and high labor intensity. Especially in the vibrating screening stage, screen clogging is a frequent problem, which not only reduces screening efficiency and affects the continuous and stable operation of the crushing system, but also easily leads to shutdown for cleaning, increases the maintenance burden, and restricts the efficiency of the entire production line. Traditional vibrating screens mostly use fixed screen structures. When processing wet, fine-grained, or muddy materials, the screen holes are prone to static accumulation due to material adhesion and clogging. Conventional vibration methods are difficult to effectively eliminate such clogging, which limits the further improvement of screening effect and system reliability. Therefore, we propose an anti-clogging vibrating screen structure for mineral processing. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides an anti-clogging vibrating screen structure for mineral processing, comprising a frame and a mounting frame. A curved screen plate is mounted on the mounting frame, and a trapezoidal hole is formed within the curved screen plate. A movable plate is slidably mounted within the curved screen plate. A third sliding rod is fixedly mounted on the mounting frame, and the movable plate is slidably connected to the third sliding rod. Two sets of symmetrically distributed third springs are fitted onto the third sliding rod, and the two ends of the two sets of third springs are respectively fixedly connected to the movable plate and the mounting frame. A sealing rubber sheet is fixedly adhered to the movable plate, and the sealing rubber sheet is fixedly connected to both the movable plate and the mounting frame.

[0005] In some embodiments, a fixed frame is fixedly installed on the mounting bracket, a movable frame is slidably installed inside the fixed frame, a lead screw is rotatably installed inside the fixed frame, the lead screw passes through the movable frame and is threadedly connected to the movable frame, a slide is slidably installed on the movable frame, and a striking head is fixedly installed on the slide, the striking head being fitted against the bottom of the curved screen plate.

[0006] In some embodiments, a first slide rod is fixedly installed inside the fixed frame, the slide is slidably connected to the first slide rod, and two sets of symmetrically distributed first springs are fitted on the first slide rod, with the two ends of the first springs respectively fixedly connected to the slide and the fixed frame.

[0007] In some embodiments, a cam is rotatably mounted inside the fixed frame, and the cam is fitted against the bottom of the slide.

[0008] In some embodiments, a positioning frame is fixedly installed on the fixing frame, an installation rod is rotatably installed inside the positioning frame, a roller brush is slidably installed on the installation rod, and the roller brush is fitted to the bottom of the curved screen plate.

[0009] In some embodiments, a second slide rod is fixedly installed inside the mounting rod, the roller brush is slidably sleeved with the second slide rod, and two sets of symmetrically distributed second springs are fitted on the second slide rod, with the two ends of the second springs respectively fixedly connected to the roller brush and the mounting rod.

[0010] In some embodiments, an adjusting rod is rotatably mounted inside the mounting rod, and a limiting groove is formed on the adjusting rod. A limiting rod is fixedly mounted inside the roller brush, and the limiting rod is correspondingly arranged with the limiting groove. The limiting rod is slidably connected to the adjusting rod through the limiting groove.

[0011] This utility model has at least the following beneficial effects: 1. By setting a sliding moving plate inside the curved screen plate and using a third spring to provide continuous restoring force, the moving plate can generate adaptive micro-displacement when subjected to material impact or vibration. Combined with a sealing rubber sheet to ensure the sealing between the moving plate and the mounting frame, this dynamic adjustment mechanism can effectively break the adhesion and accumulation of materials near the trapezoidal screen holes, reducing the occurrence of static blockage. When fine particles or wet materials get stuck in the screen holes, the slight sliding of the moving plate can change the shape of the orifice, causing the stuck material to fall off, thereby maintaining the smooth flow of the screen surface and improving the continuity and stability of the screening process.

[0012] 2. The position of the moving frame can be adjusted by the screw, allowing for targeted cleaning of clogged areas. The cam-driven slide and striking head periodically tap the bottom of the screen plate, generating vibration to dislodge the embedded material. Simultaneously, the roller brush moves close to the bottom surface of the screen plate under the action of the second spring, cleaning up the attached fine powder and preventing the holes from clogging. This allows for online cleaning and maintenance of the screen surface without stopping the machine, reducing the frequency of manual handling, alleviating labor intensity, and helping to maintain the long-term operating efficiency of the vibrating screen and the continuity of the entire production line. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2This is a schematic diagram showing the structural separation of the frame and mounting bracket of this utility model; Figure 3 This is a schematic diagram showing the structural separation of the movable frame and the carriage of this utility model; Figure 4 This is a schematic diagram of the curved sieve plate of this utility model; Figure 5 This is a schematic diagram of the internal structure of the positioning frame and mounting rod of this utility model.

[0014] In the diagram: 1. Frame; 2. Mounting frame; 3. Curved screen plate; 4. Fixed frame; 5. Moving frame; 6. Lead screw; 7. Slide; 8. Impact head; 9. First slide rod; 10. First spring; 11. Cam; 12. Positioning frame; 13. Mounting rod; 14. Roller brush; 15. Adjusting rod; 16. Limiting groove; 17. Limiting rod; 18. Second slide rod; 19. Second spring; 20. Trapezoidal hole; 21. Moving plate; 22. Third slide rod; 23. Third spring; 24. Sealing rubber sheet. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example 1: Please refer to Figure 1-5 This utility model provides a technical solution: a structure for an anti-clogging vibrating screen for mineral processing, including a frame 1 and a mounting frame 2. A curved screen plate 3 is mounted on the mounting frame 2, and a trapezoidal hole 20 is opened in the curved screen plate 3. A movable plate 21 is slidably mounted in the curved screen plate 3. A third sliding rod 22 is fixedly mounted on the mounting frame 2. The movable plate 21 is slidably sleeved with the third sliding rod 22. Two sets of symmetrically distributed third springs 23 are fitted on the third sliding rod 22. The two ends of the two sets of third springs 23 are respectively fixedly connected to the movable plate 21 and the mounting frame 2. A sealing rubber sheet 24 is fixedly adhered to the movable plate 21. The sealing rubber sheet 24 is respectively connected to the movable plate 21 by... The mounting bracket 2 is fixedly connected. When the material is vibrated and screened on the curved screen plate 3, if the screen hole is blocked, the accumulated material will squeeze the moving plate 21. The moving plate 21 will have a slight sliding displacement along the third slide rod 22, compressing the third spring 23. The restoring force of the third spring 23 will cause the moving plate 21 to return to its original position. In this reciprocating process, the slight movement of the moving plate 21 can change the actual diameter of the trapezoidal hole 20, break the stuck state of the material, and cause the blocked material to fall off. The sealing rubber sheet 24 will undergo elastic deformation when the moving plate 21 slides, and always maintain the seal between the moving plate 21 and the mounting bracket 2 to prevent fine particles from entering the equipment.

[0017] Example 2: Please refer to Figure 2 , Figure 3 , Figure 5 A fixed frame 4 is fixedly installed on the mounting frame 2. A movable frame 5 is slidably installed inside the fixed frame 4. A lead screw 6 is rotatably installed inside the fixed frame 4. The lead screw 6 passes through the movable frame 5 and is threadedly connected to the movable frame 5. A slide 7 is slidably installed on the movable frame 5. A striking head 8 is fixedly installed on the slide 7. The striking head 8 is fitted against the bottom of the curved screen plate 3. A first slide rod 9 is fixedly installed inside the fixed frame 4. The slide 7 and the first slide rod 9 are slidably sleeved. Two sets of symmetrically distributed first springs 10 are fitted on the first slide rod 9. The two ends of the first springs 10 are fixedly connected to the slide 7 and the fixed frame 4, respectively. A cam 11 is rotatably installed inside the fixed frame 4. The cam 11 is fitted against the bottom of the slide 7. Rotating the lead screw 6 can drive the movable frame 5 to move along the length of the fixed frame 4, thereby positioning the striking head 8 to a specific blockage area on the screen plate. As the cam 11 rotates continuously, its protruding portion periodically pushes up the slide 7, causing the slide 7 to slide upwards along the first slide rod 9 against the elastic force of the first spring 10. After the cam 11 passes the protruding portion, the slide 7 quickly returns to its original position downwards under the restoring force of the first spring 10, driving the striking head 8 to strike the bottom of the curved screen plate 3. This continuous up-and-down striking action generates high-frequency vibration, which can effectively shake off the material embedded in the screen holes. The function of this structure is to achieve precise and active cleaning of local blockage points on the screen surface.

[0018] A positioning frame 12 is fixedly installed on the fixed frame 4. An installation rod 13 is rotatably installed inside the positioning frame 12. A roller brush 14 is slidably installed on the installation rod 13. The roller brush 14 is fitted against the bottom of the curved screen plate 3. A second sliding rod 18 is fixedly installed inside the installation rod 13. The roller brush 14 is slidably sleeved with the second sliding rod 18. Two sets of symmetrically distributed second springs 19 are fitted on the second sliding rod 18. The two ends of the second springs 19 are fixedly connected to the roller brush 14 and the installation rod 13, respectively. An adjusting rod 15 is rotatably installed inside the installation rod 13. A limit groove 16 is opened on the adjusting rod 15. A limit rod 17 is fixedly installed inside the roller brush 14. The limit rod 17 and the limit... The corresponding groove 16 is provided, and the limiting rod 17 is slidably connected to the adjusting rod 15 through the limiting groove 16. When the adjusting rod 15 is driven to rotate continuously, the spiral or wave-shaped limiting groove 16 on its surface will cooperate with the limiting rod 17 to convert the rotational motion into the axial reciprocating motion of the limiting rod 17. This will drive the entire roller brush 14 to continuously slide back and forth in a small amplitude while rotating with the mounting rod 13. This combined motion of rotation and sliding significantly expands the contact range and cleaning path between the bristles and the bottom surface of the sieve plate, which can more effectively remove stubborn adhering substances, prevent sieve hole clogging, and thus enhance the overall cleaning effect.

[0019] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A structure for an anti-clogging vibrating screen for mineral processing, comprising a frame (1) and a mounting frame (2), characterized in that: A curved screen plate (3) is installed on the mounting frame (2). A trapezoidal hole (20) is opened in the curved screen plate (3). A movable plate (21) is slidably installed in the curved screen plate (3). A third slide rod (22) is fixedly installed on the mounting frame (2). The movable plate (21) and the third slide rod (22) are slidably connected. Two sets of symmetrically distributed third springs (23) are fitted on the third slide rod (22). The two ends of the two sets of third springs (23) are fixedly connected to the movable plate (21) and the mounting frame (2) respectively. A sealing rubber sheet (24) is fixedly bonded to the movable plate (21). The sealing rubber sheet (24) is fixedly connected to the movable plate (21) and the mounting frame (2) respectively.

2. The structure of the anti-clogging vibrating screen for mineral processing according to claim 1, characterized in that: A fixed frame (4) is fixedly installed on the mounting frame (2). A movable frame (5) is slidably installed inside the fixed frame (4). A lead screw (6) is rotatably installed inside the fixed frame (4). The lead screw (6) passes through the movable frame (5) and is threadedly connected to the movable frame (5). A slide (7) is slidably installed on the movable frame (5). A striking head (8) is fixedly installed on the slide (7). The striking head (8) is fitted to the bottom of the curved screen plate (3).

3. The structure of the anti-clogging vibrating screen for mineral processing according to claim 2, characterized in that: The first slide rod (9) is fixedly installed inside the fixed frame (4). The slide frame (7) is slidably connected to the first slide rod (9). Two sets of symmetrically distributed first springs (10) are fitted on the first slide rod (9). The two ends of the first springs (10) are fixedly connected to the slide frame (7) and the fixed frame (4) respectively.

4. The structure of the anti-clogging vibrating screen for mineral processing according to claim 2, characterized in that: A cam (11) is rotatably installed inside the fixed frame (4), and the cam (11) is fitted to the bottom of the slide (7).

5. The structure of the anti-clogging vibrating screen for mineral processing according to claim 2, characterized in that: A positioning frame (12) is fixedly installed on the fixed frame (4). An installation rod (13) is rotatably installed inside the positioning frame (12). A roller brush (14) is slidably installed on the installation rod (13). The roller brush (14) is attached to the bottom of the curved screen plate (3).

6. The structure of the anti-clogging vibrating screen for mineral processing according to claim 5, characterized in that: The mounting rod (13) is fixedly installed with a second sliding rod (18). The roller brush (14) is slidably connected to the second sliding rod (18). Two sets of symmetrically distributed second springs (19) are fitted on the second sliding rod (18). The two ends of the second springs (19) are fixedly connected to the roller brush (14) and the mounting rod (13) respectively.

7. The structure of the anti-clogging vibrating screen for mineral processing according to claim 5, characterized in that: An adjusting rod (15) is rotatably installed inside the mounting rod (13). A limiting groove (16) is provided on the adjusting rod (15). A limiting rod (17) is fixedly installed inside the roller brush (14). The limiting rod (17) is correspondingly set with the limiting groove (16). The limiting rod (17) is slidably connected to the adjusting rod (15) through the limiting groove (16).

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