Rotary vibration sieve

Abstract

The utility model discloses a spin-vibration screen in the technical field of vibration screens, which comprises a spin-vibration screen body and a support, and the top of the spin-vibration screen body is a cover plate; the support is fixedly connected with a material guiding barrel, the two ends of the material guiding barrel are communicated with a hose and a feeding hopper respectively, and the hose is located below the material guiding barrel and connected to the center of the top of the cover plate. A material taking shaft and a stirring shaft are rotationally connected into the wall body of the material guiding barrel, the material taking shaft is located over the stirring shaft, a plurality of stirring rods are annularly arranged at the end, facing the interior of the material guiding barrel, of the stirring shaft, the top of the material guiding barrel is a semicircular arc face, the middle of the material guiding barrel is communicated with the discharging end of the feeding hopper, and a plurality of material taking plates are annularly arranged at the end, facing the interior of the material guiding barrel, of the material taking shaft. The material taking plates are radially distributed at one end of the material taking shaft; the extending direction of the stirring shaft is consistent with the axis direction of the stirring shaft, and a power mechanism for driving the material taking shaft and the stirring shaft to rotate synchronously is arranged on the support. The rotary vibration sieve can effectively realize quantitative feeding and agglomeration of fine powder materials.

Description

Technical Field

[0001] This utility model belongs to the field of vibrating screen technology, and specifically relates to a rotary vibrating screen. Background Technology

[0002] A vibrating screen is a high-precision fine powder screening machine. It features low noise, high efficiency, and quick screen replacement (3-5 minutes). Its fully enclosed structure makes it suitable for screening and filtering granular, powdery, and viscous materials. The vibrating screen uses a vertical motor as the excitation source. Eccentric weights are installed at both the upper and lower ends of the motor, converting the motor's rotational motion into three-dimensional motion (horizontal, vertical, and inclined), which is then transmitted to the screen surface. Adjusting the phase angle at the upper and lower ends changes the trajectory of the material on the screen surface.

[0003] When using a vibrating screen to screen and filter fine powder materials, the small size, large specific surface area, intermolecular forces, and electrostatic adsorption of fine powder particles make them prone to agglomeration. When these agglomerated fine powders enter the vibrating screen, larger agglomerates cannot pass through the screen mesh smoothly, some agglomerates clog the screen, hindering the normal screening path of subsequent fine powder, while some agglomerates are collected directly as oversize material. Furthermore, the feed hopper is often designed with a large opening to ensure rapid material supply. When excessive fine powder accumulates rapidly on the screen, some fine powder cannot be fully dispersed or bounced under the vibration, failing to make effective contact with the screen to complete the screening process. This results in a large amount of fine powder being discharged along with the screened material without being fully screened. Therefore, multiple screening operations are often required for fine powder materials. Utility Model Content

[0004] The present invention aims to provide a rotary vibrating screen to achieve quantitative feeding and deagglomeration of fine powder materials.

[0005] This solution provides a vibrating screen, comprising a vibrating screen body and a support frame. The top of the vibrating screen body is a cover plate. A guide cylinder is fixedly connected to the support frame, with a flexible hose and a feed hopper connected to its two ends respectively. The flexible hose is located below the guide cylinder and connected to the center of the top of the cover plate. A material-collecting shaft and a stirring shaft are rotatably connected inside the wall of the guide cylinder. The material-collecting shaft is located directly above the stirring shaft. Multiple stirring rods are arranged around one end of the stirring shaft facing the inside of the guide cylinder. The top of the guide cylinder is a semi-circular arc surface, and its middle part is connected to the discharge end of the feed hopper. Multiple material-collecting plates are arranged around one end of the material-collecting shaft facing the inside of the guide cylinder. The free ends of the material-collecting plates are attached to the inner wall of the top of the guide cylinder. The material-collecting plates are radially distributed at one end of the material-collecting shaft. The extension direction of the stirring rods is consistent with the axial direction of the stirring shaft. The support frame is provided with a power mechanism that drives the material-collecting shaft and the stirring shaft to rotate synchronously.

[0006] The working principle and beneficial effects of this solution are as follows: During use, material enters from the feed hopper between two receiving plates. The power mechanism drives the receiving shaft to rotate, and the receiving plates rotate accordingly. Because the free end of the receiving plate is in contact with the inner wall of the top of the guide cylinder, a certain amount of material can be accurately scraped and quantitatively fed into the vibrating screen body through the hose, avoiding overfeeding. At the same time, the receiving shaft and the stirring shaft rotate synchronously. During the rotation of the stirring shaft, the material falls from between the receiving plates and enters the stirring rod area. The stirring rod on the stirring shaft disperses and breaks up the material, allowing the material to enter the vibrating screen body in a dispersed state, which is beneficial for subsequent screening.

[0007] Furthermore, the power mechanism includes a transmission assembly and a motor. The motor is mounted on a bracket, and its output shaft is fixedly connected to and coaxial with the material-collecting shaft. The material-collecting shaft and the stirring shaft are connected by the transmission assembly. Using a motor to rotate the material-collecting shaft is more efficient.

[0008] Furthermore, the transmission component is a transmission belt or a transmission chain. Transmission belts or chains provide smooth transmission, can buffer and absorb vibrations, and are low in cost.

[0009] Furthermore, the transmission assembly includes a driving gear and a driven gear that mesh with each other. The driving gear is mounted on the material intake shaft, and the driven gear is mounted on the stirring shaft. The gear transmission is stable and efficient, and the opposite rotation directions of the material intake shaft and the stirring shaft are beneficial for breaking up material clumps.

[0010] Furthermore, the radius of the driven gear is smaller than that of the driving gear. This ensures that the rotational speed of the stirring shaft is greater than that of the material-taking shaft, which helps to improve the de-agglomeration effect on the material.

[0011] Furthermore, the number of stirring rods is odd. An odd number of stirring rods, with the rods staggered above and below the stirring shaft, helps to further improve the de-agglomeration effect on the material.

[0012] Furthermore, the bottom of the vibrating screen body is a base, and a spring shock absorber is provided at the bottom of the base. This helps to reduce the vibration generated during the operation of the vibrating screen.

[0013] Furthermore, the base is equipped with casters with brakes at its bottom, facilitating the movement of the vibrating screen body.

[0014] Furthermore, the bracket is detachably connected to the base, making the overall structure of the vibrating screen more compact. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of a rotary vibrating screen according to Embodiment 1 of this utility model;

[0016] Figure 2 for Figure 1 A partial sectional view;

[0017] Figure 3 for Figure 1 The right view;

[0018] Figure 4 This is a right-side structural schematic diagram of a rotary vibrating screen according to Embodiment 2 of this utility model. Detailed Implementation

[0019] The following detailed description illustrates the specific implementation method:

[0020] The reference numerals in the accompanying drawings include: 1. Caster wheel; 2. Vibrating screen body; 3. Hose; 4. Guide cylinder; 5. Feed hopper; 6. Feeding shaft; 7. Feeding plate; 8. Stirring shaft; 9. Stirring rod; 10. Support; 11. Motor; 12. Drive gear; 13. Driven gear.

[0021] Example 1 is basically as shown in the appendix. Figures 1-3 As shown: A vibrating screen includes a vibrating screen body 2 and a support 10. The top of the vibrating screen body 2 is a cover plate, and the bottom of the vibrating screen body 2 is a base. The bottom of the base is provided with universal wheels 1 with brakes. The support 10 is detachably connected to the base by screws.

[0022] A guide cylinder 4 is fixedly connected to the support 10. Specifically, a connecting plate is fixedly connected to the outer wall of the guide cylinder 4, and the other end of the connecting plate is fixedly connected to the support 10. The two ends of the guide cylinder 4 are respectively connected to a flexible hose 3 and a feed hopper 5. The feed hopper 5 is located directly above the guide cylinder 4, and the flexible hose 3 is located below the guide cylinder 4 and connected to the center of the top of the cover plate. A material-taking shaft 6 and a stirring shaft 8 are rotatably connected inside the wall of the guide cylinder 4. The material-taking shaft 6 is located directly above the stirring shaft 8, and the extension directions of the material-taking shaft 6 and the stirring shaft 8 are the same. The ends of the stirring shaft 8 and the material-taking shaft 6 facing the inside of the guide cylinder 4 are on the same plane as the inner wall of the guide cylinder 4. Both the material-taking shaft 6 and the stirring shaft 8 are stepped shafts, and the larger ends of both are located inside the wall of the guide cylinder 4.

[0023] Twenty-one stirring rods 9 are arranged around one end of the stirring shaft 8 facing the inside of the feed cylinder 4. The top of the feed cylinder 4 is a semi-circular arc surface and its middle part is connected to the discharge end of the feed hopper 5. Five picking plates 7 are arranged around one end of the picking shaft 6 facing the inside of the feed cylinder 4. The free ends of the picking plates 7 are attached to the inner top wall of the feed cylinder 4. The picking plates 7 are radially distributed at one end of the picking shaft 6. The extension direction of the stirring rods 9 is consistent with the axial direction of the stirring shaft 8. A power mechanism is provided on the bracket 10 to drive the picking shaft 6 and the stirring shaft 8 to rotate synchronously. Specifically, the power mechanism includes a transmission component and a motor 11. The motor 11 is mounted on the bracket 10. The output shaft of the motor 11 is fixedly connected to the smaller end of the picking shaft 6 and is coaxial. The smaller end of the stirring shaft 8 is rotatably connected to the bracket 10. The transmission component includes a driving gear 12 and a driven gear 13 that mesh with each other. The radius of the driven gear 13 is smaller than the radius of the driving gear 12. The driving gear 12 is mounted on the picking shaft 6 and the driven gear 13 is mounted on the stirring shaft 8.

[0024] The specific implementation process is as follows: During use, move the vibrating screen to a suitable position using the casters 1 with brakes, and then press the brakes to secure it. Pour the material into the feed hopper 5, start the motor 11, and the output shaft of the motor 11 drives the material-collecting shaft 6 to rotate. Because the free end of the material-collecting plate 7 is in contact with the inner wall of the top of the guide cylinder 4, the material enters from the feed hopper 5 between the two material-collecting plates 7. The material-collecting plates 7 rotate accordingly, precisely scraping off a certain amount of material, which is then quantitatively fed into the vibrating screen body 2 through the hose 3, avoiding overfeeding.

[0025] Simultaneously, when the material-receiving shaft 6 rotates, the meshing transmission between the driving gear 12 and the driven gear 13 drives the stirring shaft 8 to rotate synchronously. Since the radius of the driven gear 13 is smaller than the radius of the driving gear 12, the rotational speed of the stirring shaft 8 is greater than that of the material-receiving shaft 6. During the rotation of the stirring shaft 8, material falls from between the material-receiving plates 7 and enters the area of ​​the stirring rods 9. The twenty-one stirring rods 9 disperse and break up the material, allowing it to enter the vibrating screen body 2 in a dispersed state, which is beneficial for subsequent screening.

[0026] Example 2 is basically as shown in the appendix. Figure 4 As shown, the only difference between this and Embodiment 1 is that the bracket 10 is not connected to the base, but a counterweight is detachably connected to its bottom. The counterweight is placed on the ground to prevent the base from vibrating and causing the bracket 10 to vibrate.

[0027] The only difference between Example 3 and Example 2 is that the transmission component is a transmission belt or a transmission chain.

[0028] The only difference between Example 4 and Example 3 is that the bottom of the base is equipped with a spring shock absorber.

[0029] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A vibrating screen, characterized in that: The device includes a vibrating screen body and a support frame. The top of the vibrating screen body is a cover plate. A guide cylinder is fixedly connected to the support frame. Both ends of the guide cylinder are connected to a flexible hose and a feed hopper, respectively. The flexible hose is located below the guide cylinder and connected to the center of the top of the cover plate. A material-collecting shaft and a stirring shaft are rotatably connected inside the wall of the guide cylinder. The material-collecting shaft is located directly above the stirring shaft. Multiple stirring rods are arranged around one end of the stirring shaft facing into the inside of the guide cylinder. The top of the guide cylinder is a semi-circular arc surface, and its middle part is connected to the discharge end of the feed hopper. Multiple material-collecting plates are arranged around one end of the material-collecting shaft facing into the inside of the guide cylinder. The free ends of the material-collecting plates are attached to the inner wall of the top of the guide cylinder. The material-collecting plates are radially distributed at one end of the material-collecting shaft. The extension direction of the stirring rods is consistent with the axial direction of the stirring shaft. The support frame is equipped with a power mechanism that drives the material-collecting shaft and the stirring shaft to rotate synchronously.

2. The vibrating screen according to claim 1, characterized in that: The power mechanism includes a transmission assembly and a motor. The motor is mounted on a bracket, and the output shaft of the motor is fixedly connected to the material picking shaft and is coaxial. The material picking shaft and the stirring shaft are connected by the transmission assembly.

3. A vibrating screen according to claim 2, characterized in that: The transmission component is a transmission belt or a transmission chain.

4. A vibrating screen according to claim 2, characterized in that: The transmission assembly includes a driving gear and a driven gear that mesh with each other. The driving gear is mounted on the material pick-up shaft, and the driven gear is mounted on the stirring shaft.

5. A vibrating screen according to claim 4, characterized in that: The radius of the driven gear is smaller than the radius of the driving gear.

6. A vibrating screen according to any one of claims 1 to 5, characterized in that: The number of stirring shafts is odd.

7. A vibrating screen according to claim 6, characterized in that: The bottom of the vibrating screen body is a base, and a spring shock absorber is provided at the bottom of the base.

8. A vibrating screen according to claim 7, characterized in that: The base is equipped with casters with brakes at the bottom.

9. A vibrating screen according to claim 8, characterized in that: The bracket is detachably connected to the base.

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