A protective device for a drum screen

Abstract

This utility model relates to the field of rotary drum screen technology, specifically disclosing a rotary drum screen protective device, including a rotary drum screen body, a base plate, support columns, a shock-absorbing structure, a protective cover, and an opening and closing structure. A base plate is provided below the rotary drum screen body, and four support columns are fixedly connected to the upper surface of the base plate. Each support column has a groove on its side surface, and a shock-absorbing structure is provided inside each groove. Protective covers are respectively provided on the upper surfaces of both sides of the rotary drum screen body, and opening and closing structures are provided on the lower surfaces of the protective covers. By providing protective covers and opening and closing structures, the protective covers on the upper surfaces of both sides of the rotary drum screen body can effectively block material splashing from all directions, significantly reducing material waste. The opening and closing structure allows adjustment of the protective cover's state. During normal operation, the protective cover is tightly closed, fully exerting its protective function; when the equipment needs maintenance, repair, or cleaning, the protective cover can be easily opened by controlling the opening and closing structure, greatly improving operational convenience.

Description

Technical Field

[0001] This utility model relates to the field of drum screen technology, and in particular to a drum screen protection device. Background Technology

[0002] In material screening operations, the drum screen, as a commonly used piece of equipment, faces many pressing problems. On the one hand, during the high-speed rotation of the drum screen, material is prone to splashing. This not only poses a serious threat to the personal safety of operators but also results in a dirty and chaotic working environment, significant material waste, and a substantial impact on production efficiency and cost control. On the other hand, the drum screen generates strong vibrations during operation. Prolonged vibration not only damages the structural stability of the equipment, significantly shortens its lifespan, and increases maintenance costs, but also generates noise pollution that negatively affects the working environment. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a protective device for drum screens.

[0004] The protective device for a rotary screen provided by this utility model includes: a rotary screen body, a base plate, support columns, a shock-absorbing structure, a protective cover, and an opening and closing structure. A base plate is provided below the rotary screen body. Four support columns are fixedly connected to the upper surface of the base plate. Each support column has a groove on its side surface. A shock-absorbing structure is provided inside each groove on the side surface of the support column. The shock-absorbing structure includes a sliding block, a sliding rod, and a damping spring. The sliding block is slidably disposed inside the groove on the side surface of the support column. A through hole is provided on the upper surface of the sliding block. A sliding rod is slidably connected inside the through hole on the upper surface of the sliding block. A damping spring is sleeved on the lower outer surface of the sliding rod. Protective covers are respectively provided on the upper surfaces of both sides of the rotary screen body. An opening and closing structure is provided on the lower surface of each protective cover. The opening and closing structure includes a connecting block, a rotating rod, a semi-worm gear, and a worm. The upper surface of the connecting block is fixedly connected to the lower surface of the protective cover. Rotating rods are fixedly connected to both ends of the connecting block. A semi-worm gear is fixedly connected to the middle of the connecting block, and a worm gear meshes below the semi-worm gear.

[0005] Preferably, two fixing plates and one bearing plate are fixedly connected to both sides of the drum screen body, and through holes are opened on the side surfaces of the two fixing plates. The rotating rods at both ends of the connecting block in the opening and closing structure of the upper surface protective cover on both sides of the drum screen body are rotatably connected to the inside of the through holes on the side surfaces of the two fixing plates on both sides of the drum screen body. Two ear plates are fixedly connected to the upper surface of the bearing plate, and through holes are opened on the side surfaces of the two ear plates.

[0006] Preferably, rubber buffer blocks are fixedly connected to the top and bottom of the groove on the side surface of the support column, and the upper and lower ends of the sliding rod are fixedly connected to the outer surfaces of the rubber buffer blocks at the top and bottom of the groove on the side surface of the support column.

[0007] Preferably, the upper end of the damping spring is fixedly connected to the lower surface of the sliding block, and the lower end of the damping spring is fixedly connected to the upper surface of the bottom rubber buffer block inside the side surface of the support column.

[0008] Preferably, one end of the sliding block extends through the groove on the side surface of the support column to the outer surface of the support column, and the end of the sliding block extending to the outer surface of the support column is fixedly connected to the outer surface of the drum screen body.

[0009] Preferably, the two ends of the worm are rotatably connected to the through holes on the side surfaces of the two ear plates on the upper surface of the bearing plate. One end of the worm is fixedly connected to a driven bevel gear, and a driving bevel gear meshes with one side of the driven bevel gear. A servo motor is provided at the lower end of the driving bevel gear, and the power output end of the servo motor is fixedly connected to the lower end of the driving bevel gear. The outer surface of the servo motor is fixedly connected to the outer surface of the bearing plate.

[0010] Compared with related technologies, the drum screen protection device provided by this utility model has the following beneficial effects:

[0011] 1. The protective covers, equipped with a closing mechanism, are located on both sides of the upper surface of the drum screen body. These covers effectively block material splashing from all directions, providing a solid safety barrier for operators. They also maintain a clean and tidy working environment, significantly reducing material waste. The closing mechanism allows for adjustment of the protective cover's status. During normal operation, the protective cover is tightly closed, fully maximizing its protective function. When the equipment needs maintenance, repair, or cleaning, the protective cover can be easily opened by controlling the closing mechanism, greatly improving operational convenience.

[0012] 2. By incorporating support columns and a shock-absorbing structure, the damping springs within the shock-absorbing structure effectively absorb and buffer the strong vibrations generated during the operation of the drum screen body through their elastic deformation. This effectively reduces the adverse effects of vibration on the overall device, significantly reduces noise pollution, and extends the service life of the equipment. The sliding rod plays a precise guiding and limiting role during the sliding block's movement, ensuring that the sliding block always slides smoothly in the correct direction, making the shock-absorbing structure more stable and reliable. The rubber buffer blocks installed at the top and bottom of the grooves on the side surface of the support column can promptly provide buffering when the sliding block reaches its limit position, preventing rigid collisions between the sliding block and the support column. This further provides comprehensive protection for the shock-absorbing structure and the drum screen body, ensuring long-term stable operation of the equipment. Attached Figure Description

[0013] Figure 1 A schematic diagram of a preferred embodiment of the drum screen protection device provided by this utility model;

[0014] Figure 2 This is an exploded structural diagram of the present invention;

[0015] Figure 3For the present utility model Figure 2 Enlarged structural diagram at point A;

[0016] Figure 4 For the present utility model Figure 2 A magnified structural diagram at point B in the middle.

[0017] The following are the labels in the diagram: 1. Rotary drum screen body; 2. Base plate; 3. Support column; 4. Vibration damping structure; 5. Protective cover; 6. Opening and closing structure; 7. Sliding block; 8. Sliding rod; 9. Damping spring; 10. Connecting block; 11. Rotating rod; 12. Half worm gear; 13. Worm; 14. Fixed plate; 15. Bearing plate; 16. Ear plate; 17. Rubber buffer block; 18. Driven bevel gear; 19. Driven bevel gear; 20. Servo motor. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Please refer to the following: Figure 1 , Figure 2 , Figure 3 and Figure 4The device includes: a drum screen body 1, a base plate 2, support columns 3, a shock-absorbing structure 4, a protective cover 5, and an opening and closing structure 6. The base plate 2 is located below the drum screen body 1. The drum screen body 1 is the main body that realizes the material screening function. The drum screen body 1 is used to screen and classify materials. The drum screen body 1 is a commonly used technology and will not be described in detail here. Four support columns 3 are fixedly connected to the upper surface of the base plate 2. The base plate 2 plays the role of supporting the entire device, providing an installation foundation for the drum screen body 1 and other components, and ensuring the stability of the device. The support columns 3 support the drum screen body 1, maintaining a certain space distance between it and the base plate 2. At the same time, the sliding grooves opened on the side surface provide an installation position for the shock-absorbing structure 4. Each side surface of the support column 3 is provided with a sliding groove, and each sliding groove on the side surface of the support column 3 is provided with a shock-absorbing structure 4. The shock-absorbing structure 4 includes a sliding block 7, a sliding rod 8, and a damping spring 9. The sliding block 7 is slidably disposed inside the sliding groove on the side surface of the support column 3. A through hole is provided on the upper surface of the sliding block 7, and the sliding rod 8 is slidably connected inside the through hole on the upper surface of the sliding block 7. The lower end of the sliding rod 8 is fitted with a damping spring 9. Protective covers 5 are respectively provided on the upper surfaces of both sides of the drum screen body 1. Each lower surface of the protective cover 5 is provided with an opening and closing structure 6. The opening and closing structure 6 includes a connecting The connecting block 10 consists of a rotating rod 11, a half-worm gear 12, and a worm 13. The upper surface of the connecting block 10 is fixedly connected to the lower surface of the protective cover 5. The rotating rod 11 is fixedly connected to both ends of the connecting block 10. The half-worm gear 12 is fixedly connected to the middle of the connecting block 10. The worm 13 meshes with the half-worm gear 12 below. When the worm 13 rotates, it meshes with the half-worm gear 12 and rotates. The worm 13 has a limiting function on the half-worm gear 12 to prevent the half-worm gear 12 from rotating on its own. When the half-worm gear 12 rotates, it drives the connecting block 10 to rotate and drives the protective cover 5 to open and close through the connecting block 10.

[0020] In the specific implementation process, two fixing plates 14 and a bearing plate 15 are fixedly connected to both sides of the drum screen body 1. The side surfaces of the two fixing plates 14 are provided with through holes. The rotating rods 11 at both ends of the connecting block 10 in the opening and closing structure 6 on the lower surface of the protective cover 5 on both sides of the drum screen body 1 are rotatably connected to the inside of the through holes on the side surfaces of the two fixing plates 14 on both sides of the drum screen body 1. The fixing plates 14 are used to rotatably connect the rotating rods 11 at both ends of the connecting block 10 in the opening and closing structure 6, providing support and a rotating shaft for the rotation of the protective cover 5. Two ear plates 16 are fixedly connected to the upper surface of the bearing plate 15. The side surfaces of the two ear plates 16 are provided with through holes. The bearing plate 15 provides an installation position for the worm gear 13 and related transmission components, ensuring the rotational stability of the worm gear 13.

[0021] Among them, rubber buffer blocks 17 are fixedly connected to the top and bottom of the groove on the side surface of the support column 3, and the upper and lower ends of the sliding rod 8 are fixedly connected to the outer surface of the rubber buffer blocks 17 at the top and bottom of the groove on the side surface of the support column 3, respectively. The sliding rod 8 plays a guiding and limiting role when the sliding block 7 slides, ensuring the sliding direction of the sliding block 7. When the sliding block 7 slides to the limit position in the groove, the rubber buffer block 17 plays a buffering role, avoiding rigid collision between the sliding block 7 and the support column 3, and further protecting the shock-absorbing structure 4 and the drum screen body 1.

[0022] The upper end of the damping spring 9 is fixedly connected to the lower surface of the sliding block 7, and the lower end of the damping spring 9 is fixedly connected to the upper surface of the rubber buffer block 17 at the bottom of the side surface of the support column 3. The damping spring 9 absorbs and buffers the vibration generated when the drum screen body 1 is working through its own elastic deformation, reduces the impact of vibration on the overall device, reduces noise, and extends the service life of the equipment.

[0023] One end of the sliding block 7 extends through the groove on the side surface of the support column 3 to the outer surface of the support column 3. The end of the sliding block 7 extending to the outer surface of the support column 3 is fixedly connected to the outer surface of the drum screen body 1. The sliding block 7 can slide in the groove as the drum screen body 1 vibrates, thus transmitting vibration.

[0024] The worm gear 13 is rotatably connected at both ends to the through holes on the side surfaces of two ear plates 16 on the upper surface of the support plate 15. The ear plates 16 serve to mount the worm gear 13. One end of the worm gear 13 is fixedly connected to a driven bevel gear 18. A driving bevel gear 19 meshes with one side of the driven bevel gear 18. A servo motor 20 is installed at the lower end of the driving bevel gear 19. The power output end of the servo motor 20 is fixedly connected to the lower end of the driving bevel gear 19. The outer surface of the servo motor 20 is fixedly connected to the outer surface of the support plate 15. The servo motor 20 is electrically connected to an external power supply. The operator controls the servo motor 20 through a PLC controller. When the servo motor 20 is started, the power output end of the servo motor 20 rotates, driving the driving bevel gear 19 to rotate. When the driving bevel gear 19 rotates, it meshes and drives the driven bevel gear 18 to rotate. When the driven bevel gear rotates, it drives the worm gear 13 to rotate.

[0025] The working principle of this utility model is as follows: The operator precisely controls the servo motor 20, which is electrically connected to an external power source, through a PLC controller. When the servo motor 20 is started, its power output end begins to rotate, thereby driving the connected active bevel gear 19 to rotate synchronously. During the rotation of the active bevel gear 19, it meshes with the driven bevel gear 18, driving the driven bevel gear 18 to rotate. Since the driven bevel gear 18 is fixedly connected to the worm gear 13, the rotation of the driven bevel gear 18 drives the worm gear 13 to rotate together. When the worm gear 13 rotates, it meshes with the half-worm gear 12 and drives the half-worm gear 12 to rotate. The rotation of the half-worm gear 12 further drives the connecting block 10, which is fixedly connected to it, to rotate. The rotating rods 11 at both ends of the connecting block 10 are respectively rotatably connected to the through holes on the side surface of the fixed plate 14. The rotation of the connecting block 10 ultimately drives the protective device through the rotating rods 11. The cover 5 rotates around the rotating rod 11, thus smoothly realizing the opening and closing action of the protective cover 5, protecting the drum screen equipment during operation. Simultaneously, when the protective cover 5 is open, it facilitates maintenance of the drum screen. When the drum screen body 1 vibrates during operation, the vibration is quickly transmitted to the sliding block 7, which is tightly fixed to it. Under the action of vibration, the sliding block 7 can slide along the groove on the side surface of the support column 3. During the sliding process, the sliding block 7 forms a sliding connection with the sliding rod 8. The sliding rod 8 is installed inside the through hole on the upper surface of the sliding block 7. At this time, the sliding rod 8 plays a crucial guiding role, ensuring that the sliding block 7 always slides in the predetermined correct direction. Simultaneously, the damping spring 9, sleeved on the lower outer surface of the sliding rod 8, undergoes elastic deformation during the sliding of the sliding block 7. Through elastic deformation, it efficiently absorbs and buffers the energy generated by vibration, greatly reducing the impact of vibration on the equipment. When the sliding block 7 slides to its limit position, the rubber buffer blocks 17 pre-installed at the top and bottom of the groove on the side surface of the support column 3 immediately come into play, further buffering the impact force of the sliding block 7 and effectively reducing the damage of vibration to the equipment.

[0026] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0027] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A protective device for a drum screen, comprising a drum screen body (1), a base plate (2), a support column (3), a shock-absorbing structure (4), a protective cover (5), and an opening and closing structure (6), characterized in that, A base plate (2) is provided below the drum screen body (1). Four support columns (3) are fixedly connected to the upper surface of the base plate (2). The side surfaces of the support columns (3) are all provided with grooves. The grooves on the side surfaces of the support columns (3) are all provided with shock-absorbing structures (4). The shock-absorbing structure (4) includes a sliding block (7), a sliding rod (8) and a damping spring (9). The sliding block (7) is slidably disposed in the groove on the side surface of the support column (3). The upper surface of the sliding block (7) is provided with a through hole. The sliding rod (8) is slidably connected inside the through hole on the upper surface of the sliding block (7). The lower end of the sliding rod (8) A damping spring (9) is fitted on the outer surface. Protective covers (5) are respectively provided on the upper surfaces of both sides of the drum screen body (1). Opening and closing structures (6) are provided on the lower surfaces of the protective covers (5). The opening and closing structures (6) include connecting blocks (10), rotating rods (11), half worm gears (12) and worms (13). The upper surface of the connecting block (10) is fixedly connected to the lower surface of the protective cover (5). Rotating rods (11) are fixedly connected to both ends of the connecting block (10). Half worm gears (12) are fixedly connected to the middle of the connecting block (10). Worms (13) are meshed below the half worm gears (12).

2. The drum screen protection device according to claim 1, characterized in that, Two fixing plates (14) and a bearing plate (15) are fixedly connected to both sides of the drum screen body (1). The side surfaces of the two fixing plates (14) are provided with through holes. The rotating rods (11) at both ends of the connecting block (10) in the opening and closing structure (6) of the upper surface protective cover (5) on both sides of the drum screen body (1) are rotatably connected to the inside of the through holes on the side surfaces of the two fixing plates (14) on both sides of the drum screen body (1). Two ear plates (16) are fixedly connected to the upper surface of the bearing plate (15). The side surfaces of the two ear plates (16) are provided with through holes.

3. The drum screen protection device according to claim 1, characterized in that, The top and bottom of the groove on the side surface of the support column (3) are respectively fixedly connected to rubber buffer blocks (17), and the upper and lower ends of the sliding rod (8) are respectively fixedly connected to the outer surface of the rubber buffer blocks (17) at the top and bottom of the groove on the side surface of the support column (3).

4. The drum screen protection device according to claim 1, characterized in that, The upper end of the damping spring (9) is fixedly connected to the lower surface of the sliding block (7), and the lower end of the damping spring (9) is fixedly connected to the upper surface of the bottom rubber buffer block (17) on the side surface of the support column (3).

5. The drum screen protection device according to claim 1, characterized in that, One end of the sliding block (7) extends through the groove on the side surface of the support column (3) to the outer surface of the support column (3), and the end of the sliding block (7) extending to the outer surface of the support column (3) is fixedly connected to the outer surface of the drum screen body (1).

6. The drum screen protection device according to claim 1, characterized in that, The two ends of the worm (13) are rotatably connected to the inside of the through holes on the side surfaces of the two ear plates (16) on the upper surface of the bearing plate (15). One end of the worm (13) is fixedly connected to a driven bevel gear (18). A driving bevel gear (19) meshes with one side of the driven bevel gear (18). A servo motor (20) is provided at the lower end of the driving bevel gear (19). The power output end of the servo motor (20) is fixedly connected to the lower end of the driving bevel gear (19). The outer surface of the servo motor (20) is fixedly connected to the outer surface of the bearing plate (15).

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