A vibrating screen with low noise

Abstract

The utility model relates to the technical field of vibrating screen, disclose a vibrating screen of little noise, including vibrating screen body and base, the vibrating screen body lower extreme fixedly seted with connecting block, the connecting block lower extreme fixedly seted with a plurality of first inclined blocks, the base inside rotation is provided with a plurality of lead screws, a plurality of the lead screw outside all are threaded connection with second inclined block, a plurality of second inclined blocks are opposite one side all fixedly seted with compression spring, a plurality of lead screws are opposite one side all fixedly seted with carousel, a plurality of carousel are opposite one side all hinged and are provided with connecting rod, a plurality of connecting rod upper end all hinged and are provided with first damper, the base inside lower extreme fixedly seted with second damper, in the utility model, through multistage damping vibration reduction, effectively reduce the transmission of vibration to the base, and further reduce the noise generated in the operation process of vibrating screen, effectively reduce the influence to working environment and surrounding personnel health.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screen technology, and in particular to a vibrating screen with low noise. Background Technology

[0002] A vibrating screen is an industrial device that uses the principle of vibration to screen, classify, or filter materials. It is widely used in mining, building materials, chemical, food and other fields. The vibrating screen generates periodic vibration through a vibrating motor or exciter, which drives the screen surface to form a specific motion trajectory, causing the material to jump, roll or slide on the screen surface, thereby achieving the separation of materials of different particle sizes.

[0003] Most existing vibrating screens use simple spring or rubber pad support structures, with a single vibration reduction method and a lack of effective multi-stage buffer and energy dissipation structures. Therefore, during operation, the vibration energy of the vibrating screen is mainly transmitted directly to the base and foundation through rigid connections, which can easily cause equipment resonance and violent shaking, resulting in high noise, strong vibration, poor stability, and easy impact on the working environment and the health of surrounding personnel.

[0004] Therefore, those skilled in the art have provided a vibrating screen with low noise to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a low-noise vibrating screen. Through multi-stage damping, the transmission of vibration to the base is effectively reduced, thereby lowering the noise generated during the operation of the vibrating screen and effectively reducing the impact on the working environment and the health of surrounding personnel.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A low-noise vibrating screen includes a vibrating screen body and a base. A connecting block is fixedly installed at the lower end of the vibrating screen body, and a plurality of first inclined blocks are fixedly installed at the lower end of the connecting block. A plurality of lead screws are rotatably installed inside the base. A second inclined block is threadedly connected to the outside of each of the plurality of lead screws. A compression spring is fixedly installed on each pair of opposite sides of the plurality of second inclined blocks. A turntable is fixedly installed on each pair of opposite sides of the plurality of lead screws. A connecting rod is hinged to each pair of opposite sides of the plurality of turntables. A first damper is hinged to the upper end of each of the plurality of connecting rods. A second damper is fixedly installed at the lower end of the base.

[0007] Furthermore, the lower ends of the opposite sides of each pair of the first inclined blocks are inclined, and the upper ends of the opposite sides of each pair of the second inclined blocks are inclined.

[0008] Furthermore, the lower ends of the first inclined blocks on opposite sides are respectively slidably disposed on the upper ends of the second inclined blocks on opposite sides, and the exterior of the second inclined blocks is slidably disposed on the lower end of the base.

[0009] Furthermore, the external surfaces of the plurality of turntables are rotatably disposed inside the lower end of the base, and the external surfaces of the plurality of first dampers are fixedly disposed inside the upper end of the base.

[0010] Furthermore, each of the multiple compression springs is fixedly installed on one side of each other inside the base at the lower end, and the multiple compression springs are respectively sleeved on the outside of the multiple lead screws.

[0011] Furthermore, the upper end of the second damper is fixedly mounted on the lower end of the connecting block, and the lower outer end of the connecting block is slidably mounted on the upper inner end of the base.

[0012] Furthermore, a screening frame is slidably arranged inside the vibrating screen body, a vibrating motor is fixedly arranged at the lower end of the screening frame, and multiple springs are fixedly arranged at the lower end of the screening frame.

[0013] This utility model has the following beneficial effects: This invention proposes a low-noise vibrating screen. During operation, the vibration generated by the screen body is transmitted downwards through the connecting block at its lower end. The connecting block slides up and down inside the base, causing the second damper to extend and retract accordingly, generating damping force to provide initial buffering of the vibration. Simultaneously, the first inclined block pushes the second inclined block, forcing it to slide horizontally in opposite directions within the base, and causing the lead screw to drive the turntable to rotate. This causes the first damper to gradually extend. Subsequently, the continuous rotation of the turntable causes the first damper to gradually retract. During this process, the first damper generates a reverse damping force, further suppressing the movement amplitude of the connecting block, thereby dissipating vibration energy, improving equipment stability, reducing noise generated during screen operation, and minimizing the impact on the working environment and the health of surrounding personnel. Attached Figure Description

[0014] Figure 1 This is an isometric schematic diagram of the entire utility model; Figure 2 This is a bottom-view orthographic section schematic diagram of the present invention close to the vibrating screen body; Figure 3 This is a bottom-view orthographic section schematic diagram of the present invention near the base; Figure 4 This is a cross-sectional isometric view of the present invention near the second damper; Figure 5 This is an isometric view of the present invention near the turntable.

[0015] Legend: 1. Vibrating screen body; 2. Connecting block; 3. Base; 4. Screening frame; 5. Vibrating motor; 6. Spring; 7. First damper; 8. Connecting rod; 9. First inclined block; 10. Turntable; 11. Lead screw; 12. Second inclined block; 13. Second damper; 14. Compression spring. Detailed Implementation

[0016] 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.

[0017] Reference Figures 1-5 One embodiment provided by this utility model: A low-noise vibrating screen includes a vibrating screen body 1 and a base 3. A connecting block 2 is fixedly installed at the lower end of the vibrating screen body 1. Multiple first inclined blocks 9 are fixedly installed at the lower end of the connecting block 2. Multiple lead screws 11 are rotatably installed inside the base 3. Multiple lead screws 11 are threadedly connected to the outside of multiple lead screws 11. Compression springs 14 are fixedly installed on opposite sides of multiple second inclined blocks 12. Turntables 10 are fixedly installed on opposite sides of multiple lead screws 11. Connecting rods 8 are hinged on opposite sides of multiple turntables 10. First dampers 7 are hinged at the upper end of multiple connecting rods 8. Second dampers 13 are fixedly installed at the lower end of the base 3. Multiple first inclined blocks 9 are inclined at the lower end of opposite sides in pairs, multiple second inclined blocks 12 are inclined at the upper end of opposite sides in pairs, multiple first inclined blocks 9 are slidably disposed at the upper end of opposite sides in pairs of multiple second inclined blocks 12, multiple second inclined blocks 12 are slidably disposed at the lower end of the base 3, multiple turntables 10 are rotatably disposed at the lower end of the base 3, multiple first dampers 7 are fixedly disposed at the upper end of the base 3, multiple compression springs 14 are fixedly disposed at the lower end of the base 3 in pairs, multiple compression springs 14 are respectively sleeved on the outside of multiple lead screws 11, the upper end of the second damper 13 is fixedly disposed at the lower end of the connecting block 2, the lower end of the connecting block 2 is slidably disposed at the upper end of the base 3, a screening frame 4 is slidably disposed inside the vibrating screen body 1, a vibrating motor 5 is fixedly disposed at the lower end of the screening frame 4, and multiple springs 6 are fixedly disposed at the lower end of the screening frame 4. Specifically, before using the vibrating screen, first connect the power supply to the entire equipment and ensure that the circuit connection is stable. Then, check whether the protective cover at the top of the vibrating screen body 1 is closed. Then, slowly feed the material to be graded into the feed port on one side of the top of the vibrating screen body 1. The material will fall naturally into the screen at the top of the screening frame 4. Then start the vibrating motor 5. The vibration energy generated by the operation of the vibrating motor 5 is transmitted to the screening frame 4, causing the screening frame 4 to vibrate inside the vibrating screen body 1. The lower end of the spring 6 is fixedly connected to the lower end of the inside of the vibrating screen body 1. During the movement of the screening frame 4, the spring 6 at its lower end will elastically deform synchronously, thereby increasing the vibration amplitude of the screening frame 4 and improving the screening efficiency of fine materials. At the same time, avoid hard contact between the screening frame 4 and the vibrating screen body 1, thereby avoiding abnormal noise of the components caused by vibration impact. Under continuous vibration, smaller particles on the screen will pass smoothly through the gaps in the screen and fall into the screening frame 4, and finally be discharged from the discharge port on one side of the screening frame 4. Larger particles are trapped at the top of the screen, completing the material classification. After one round of screening, the protective cover at the top of the vibrating screen body 1 can be opened directly to quickly remove the large particles left at the top of the screening frame 4. The protective cover adopts a hinge design, which can be opened and closed without the assistance of tools, making it convenient to operate, shortening the cleaning time, and improving the continuous operation efficiency of the equipment. The vibration generated by the operation of the vibrating screen body 1 will first be transmitted to the connecting block 2 fixed at its lower end, causing the connecting block 2 to move up and down synchronously. Since the connecting block 2 is slidably set inside the base 3 at its lower end, the inner wall of the base 3 will constrain the movement trajectory of the connecting block 2 to prevent the connecting block 2 from deviating. At the same time, the second damper 13 fixed at the lower end of the connecting block 2 will extend and retract synchronously with the movement of the connecting block 2. When the second damper 13 retracts, the damping medium inside it will generate a reverse damping force, which will directly offset part of the vibration energy, thereby initially reducing the up and down movement amplitude of the connecting block 2. When the connecting block 2 drives the first inclined block 9 to slide up and down synchronously, the lower inclined surface of the first inclined block 9 and the upper inclined surface of the second inclined block 12 slide in close contact. Both the lower inclined surface of the first inclined block 9 and the upper inclined surface of the second inclined block 12 are provided with wear-resistant coatings made of tungsten carbide, which can effectively improve the wear resistance of the contact surfaces, reduce the problem of increased clearance after long-term use, and ensure the stability of the vibration damping effect. The inclined surfaces of the first inclined block 9 and the second inclined block 12 are adapted to each other and can slide relative to each other. Furthermore, the lower end of the interior of the second inclined block 12 is screwed into the lead screw 11. The screw rod 11 and the second inclined block 12 are connected by threads. When the first inclined block 9 slides down, its inclined surface will generate a lateral thrust on the inclined surface of the second inclined block 12, causing the opposite second inclined block 12 to slide in the opposite direction along the outside of the screw rod 11. The sliding groove inside the base 3 will restrict the movement direction of the second inclined block 12, so that it only slides in the horizontal direction, and avoid the second inclined block 12 from deviating and getting stuck. Since the screw rod 11 and the second inclined block 12 are connected by threads, when the second inclined block 12 slides, it will drive the screw rod 11 to rotate synchronously inside the base 3, thereby driving the turntable 10, which is fixedly connected to the screw rod 11, to rotate synchronously. When the turntable 10 rotates, it will drive the connecting rod 8, which is hinged to it, to move. During the movement, the connecting rod 8 will pull the lower end of the first damper 7, causing the first damper 7 to gradually extend. During the extension of the first damper 7, the damping force generated by the internal damping medium will further offset the vibration energy, thereby significantly slowing down the up and down movement of the connecting block 2 and blocking the transmission of vibration to the base 3, while reducing noise. When the connecting rod 8 rotates to the lowest end, it will push the first damper 7 to retract, further slowing down the movement of the connecting block 2. When the second inclined block 12 slides in the opposite direction, it will simultaneously stretch the compression spring 14, which is fixedly connected to it. The compression spring 14 is sleeved on the outside of the lead screw 11 to prevent misalignment during deformation. When the first inclined block 9 returns to its original position, the compression spring 14 rebounds and pulls the second inclined block 12 to slide in the opposite direction, assisting each component to return to its initial position and further slowing down the transmission of vibration and noise. It should be noted that the vibration motor 5, the first damper 7, and the second damper 13 are all existing equipment. Therefore, their specific structures and working principles will not be described in detail here. A deep groove ball bearing is used at the rotational connection between the lead screw 11 and the base 3. A rubber sealing ring is installed on the outside of the bearing, which fits tightly against the outer wall of the lead screw 11 to effectively prevent external dust from entering the bearing. Lithium-based grease is periodically injected into the bearing to ensure the flexibility of the lead screw 11's rotation and prevent jamming. A screen fixing frame is installed inside the screening frame 4. The screen is made of stainless steel woven mesh, and the mesh size is selected according to the screening requirements. The edges are detachably fixed to the fixing frame with bolts. Handles are installed on both sides of the fixing frame. A pressure strip is installed at the upper opening of the screening frame 4, which is connected to the screening frame 4 by a buckle. The pressure strip presses the edge of the screen onto the fixing frame to prevent the screen from shifting during screening. When replacing the screen... When using the screen, simply open the pressure bar buckle at the top of the screening frame 4, remove the bolts fixing the screen, and the old screen can be taken out. After replacing the screen with a new one, re-fix the bolts and tighten the pressure bar. The operation is convenient and improves equipment utilization. This is existing technology, and its specific structure and working principle will not be described in detail here. Spring 6 and compression spring 14 are both made of stainless steel, which has good fatigue resistance and can prevent rust from affecting the elasticity. The standard parts used in this application can all be purchased from the market, and the irregular parts can be customized according to the description and drawings. The specific connection methods of each part all adopt mature bolts, rivets, welding and other conventional methods in the existing technology. The mechanical parts, components and equipment all adopt conventional models in the existing technology. Therefore, they will not be described in detail here. The contents not described in detail in this specification are all existing technologies known to those skilled in the art.

[0018] Working principle: When in use, the material to be screened is fed into the feed port on one side of the upper end of the vibrating screen body 1, so that the material enters the screen at the upper end of the screening frame 4. Then, the vibration motor 5 is started, which causes the screening frame 4 to vibrate inside the vibrating screen body 1. The spring 6 can amplify the vibration amplitude. Under the action of vibration, the smaller particles of material at the upper end of the screen will pass through the screen and fall into the screening frame 4, and be discharged from the discharge port on one side of the screening frame 4. The larger particles of material will remain at the upper end of the screening frame 4, thereby realizing the grading of materials. Afterwards, the larger particles of material at the upper end of the screening frame 4 can be taken out by opening the protective cover at the upper end of the vibrating screen body 1. The vibration generated by the vibrating screen body 1 during operation is transmitted to the connecting block 2 at its lower end, causing the connecting block 2 to drive the first inclined block 9 at its lower end to move up and down. When the connecting block 2 moves downward, the second damper 13 will contract, generating a damping force, which initially slows down the up and down movement of the connecting block 2. Furthermore, the first inclined block 9 will slide up and down synchronously with the connecting block 2, causing its lower inclined surface to push the upper inclined surface of the second inclined block 12, causing the interior of the second inclined block 12 to slide in the opposite direction to the exterior of the screw 11, and causing the screw 11 to rotate synchronously inside the base 3. The rotation of the screw 11 will drive the turntable 10 inside the base 3. The rotating disc 10 causes the connecting rod 8 connected to it to move synchronously. The movement of the connecting rod 8 pulls the lower end of the first damper 7, causing the first damper 7 to gradually extend. During the extension process, the first damper 7 will generate damping force, further slowing down the up and down movement of the connecting block 2. When the first damper 7 extends to a certain position, the rotation of the disc 10 will cause the first damper 7 to retract. At the same time, the second inclined block 12 slides against the inner wall of the base 3, and it will stretch the compression spring 14 connected to it, causing the compression spring 14 to deform outside the lead screw 11. Subsequently, the compression spring 14 drives the second inclined block 12 to return to its original position.

[0019] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 low-noise vibrating screen, comprising a vibrating screen body (1) and a base (3), characterized in that: A connecting block (2) is fixedly installed at the lower end of the vibrating screen body (1). A plurality of first inclined blocks (9) are fixedly installed at the lower end of the connecting block (2). A plurality of screw rods (11) are rotatably installed inside the base (3). A second inclined block (12) is threadedly connected to the outside of the plurality of screw rods (11). A compression spring (14) is fixedly installed on each opposite side of the plurality of second inclined blocks (12). A turntable (10) is fixedly installed on each opposite side of the plurality of screw rods (11). A connecting rod (8) is hinged on each opposite side of the plurality of turntables (10). A first damper (7) is hinged at the upper end of the plurality of connecting rods (8). A second damper (13) is fixedly installed at the lower end of the base (3).

2. The low-noise vibrating screen according to claim 1, characterized in that: The lower ends of the opposite sides of the multiple first inclined blocks (9) are inclined, and the upper ends of the opposite sides of the multiple second inclined blocks (12) are inclined.

3. The low-noise vibrating screen according to claim 1, characterized in that: Multiple first inclined blocks (9) are slidably disposed on opposite sides near the lower end of multiple second inclined blocks (12) near opposite sides near the upper end of multiple second inclined blocks (12), and the exterior of multiple second inclined blocks (12) is slidably disposed inside the lower end of the base (3).

4. The low-noise vibrating screen according to claim 1, characterized in that: The multiple turntables (10) are rotatably mounted on the lower part of the base (3), and the multiple first dampers (7) are fixedly mounted on the upper part of the base (3).

5. A low-noise vibrating screen according to claim 1, characterized in that: The multiple compression springs (14) are fixedly installed on opposite sides of the base (3) at the lower end, and the multiple compression springs (14) are respectively sleeved on the outside of the multiple lead screws (11).

6. The low-noise vibrating screen according to claim 1, characterized in that: The upper end of the second damper (13) is fixedly installed at the lower end of the connecting block (2), and the lower end of the connecting block (2) is slidably installed at the upper end of the base (3).

7. A low-noise vibrating screen according to claim 1, characterized in that: The vibrating screen body (1) has a screening frame (4) slidably arranged inside. A vibrating motor (5) is fixedly arranged at the lower end of the screening frame (4). Multiple springs (6) are fixedly arranged at the lower end of the screening frame (4).

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