Rotary vibration sieve with dustproof function

Abstract

The utility model relates to the field of new material processing. The rotary vibration screen with the dustproof function comprises a base and a plurality of layers of screen drums installed above the base through elastic columns. An inverted-cone-shaped barrel cover is arranged at the top of the screen barrel located on the uppermost layer, a feeding port is formed in the center of the barrel cover and extends downwards to form a feeding barrel, the lower end of the feeding barrel is closed, two discharging pipes which incline outwards and downwards and are communicated with the feeding barrel are arranged on the left side and the right side of the lower end of the feeding barrel, and pipe sealing plates are arranged at pipe openings in the lower ends of the discharging pipes. A hinge seat is arranged on the outer surface of the upper side of the discharging pipe, and the upper end of the pipe sealing plate and the hinge seat form hinge joint which can abut against and seal a pipe opening under the action of gravity. According to the utility model, materials on the screen drum on the uppermost layer can be prevented from raising to generate dust under the action of excitation, so that the clean production environment of a workshop is ensured, and the harm to workers is reduced.

Description

Technical Field

[0001] This utility model relates to the field of new material processing technology, specifically to a rotary vibrating screen with dustproof function. Background Technology

[0002] Vibrating screens are widely used processing equipment in the processing of new materials such as toner. They achieve rapid material screening through the rotation and vibration of the screen mesh, featuring a long material screening path and high screen utilization. Currently, traditional vibrating screens typically use a longitudinally mounted vibrating motor to drive a screen cylinder (usually multi-layered) to rotate and vibrate on a base with elastic support. The screened material is discharged from the outlet on the side of the screen cylinder. However, existing vibrating screens still have the following problems: 1. Due to feeding requirements, the uppermost screen cylinder is usually open (or closed by an inverted conical top cover with a feed inlet at the center). For some powdery materials, this generates a significant amount of dust during the vibrating screen's operation, affecting the workshop environment. 2. During operation, some high-viscosity materials can easily cause screen holes to become clogged, making cleaning difficult. In existing technology, perforated plates are usually set below the screen as support plates, and elastic balls are placed between the support plates. During operation, the elastic balls bounce and impact the screen, thereby cleaning the holes. However, this method requires the addition of support plates, which increases costs and is not conducive to reducing the overall height of the vibrating screen. This structure has significant defects, especially for some multi-layer vibrating screens. Summary of the Invention

[0003] The purpose of this invention is to provide a dustproof vibrating screen that can prevent dust from the top.

[0004] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is: a rotary vibrating screen with dustproof function, including a base and a multi-layer screen cylinder mounted on the base via elastic columns;

[0005] The top of the uppermost screen cylinder is equipped with an inverted conical cylinder cover. The center of the cylinder cover is provided with a feed inlet, which extends downward to form a feed cylinder. The lower end of the feed cylinder is closed. On the left and right sides of the lower end, there are two outwardly inclined downward feeding pipes that communicate with the feed cylinder. A sealing plate is provided at the lower end of the feeding pipe. A hinge seat is provided on the upper outer surface of the feeding pipe. The upper end of the sealing plate and the hinge seat form a hinge that can abut and close the pipe opening under the action of gravity.

[0006] Preferably, the bottom surface of the feed cylinder is an upward-protruding spherical surface.

[0007] Preferably, the cylinder cover is provided with a wire hole, the lower end of the sealing plate is connected to one end of the pull wire, and the other end of the pull wire passes through the wire hole and is connected to the pull head.

[0008] Preferably, the slider is spherical.

[0009] The beneficial effects of this invention are mainly reflected in its ability to prevent material on the uppermost screen cylinder from being lifted and generating dust under vibration, thus ensuring a clean production environment in the workshop and reducing harm to workers. Specifically, during feeding, the material is introduced from the feed cylinder and discharged from the discharge pipes on both sides after reaching the bottom of the feed cylinder. During the falling process, the material's gravity causes it to open the sealing plate. Because the discharge pipes are located on both sides, the rising dust is less likely to directly enter the feed cylinder and rise, making it suitable for continuous feeding operations. For non-continuous feeding operations, after feeding is completed, the sealing plate can completely close the discharge pipe under its own gravity, providing even better dust prevention. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 A schematic diagram of the structure of the cylinder cover and the feed cylinder;

[0012] Figure 3 for Figure 2 Enlarged view of section A in the middle;

[0013] Figure 4 This is a schematic diagram of the hole cleaning mechanism installation.

[0014] Figure 5 This is a top view of the installation of the hole-cleaning mechanism in a preferred embodiment. Detailed Implementation

[0015] like Figure 1 As shown, a vibrating screen is used to screen materials for particle size or remove impurities during material processing. It includes a base 0 and multiple layers of screen cylinders 2 mounted above the base 0 via elastic columns 1. A drive mechanism is also included to rotate and vibrate the screens within each layer of screen cylinders 2; its structure is designed with reference to existing vibrating screens.

[0016] The first improvement of this utility model is that it has a dust removal design, such as... Figure 1 As shown, the top of the uppermost screen cylinder 2 is provided with an inverted conical cover 3. The cover 3 is generally snapped onto the screen cylinder 2 or held in place by a clamp, such as... Figure 2As shown, the center of the cylinder cover 3 is provided with a feed inlet 4, which extends downward to form a feed cylinder 5. The lower end of the feed cylinder 5 is closed, and two outwardly inclined downward-facing discharge pipes 6 connected to the feed cylinder 5 are provided on the left and right sides of the lower end. In order to increase the material discharge pressure at the outer end of the discharge pipes 6, they can be designed to gradually decrease in size. The bottom surface of the feed cylinder 5 is preferably designed as an upwardly protruding spherical surface to facilitate the smooth flow of materials.

[0017] The lower end of the feed pipe 6 of this invention is provided with a sealing plate 7. A hinge seat 8 is provided on the upper outer surface of the feed pipe 6. The upper end of the sealing plate 7 and the hinge seat 8 form a hinge that can abut and seal the pipe opening under gravity. That is, in its natural state, the sealing plate 7 can abut against the opening of the feed pipe 6 to form a seal. The sealing plate 7 is typically made of a highly weather-resistant plastic material. When material passes through, the sealing plate 7 can open due to the impact of the material's gravity.

[0018] Because the feed pipe 6 is located on both sides, the rising dust is less likely to directly enter the feed cylinder 5 and rise upwards, making it suitable for continuous feeding operations. For non-continuous feeding operations, after feeding is completed, the sealing plate 7 can completely seal the feed pipe 6 under its own gravity, providing better dust prevention. In some cases, the sealing plate 7 may get stuck. In this case, the sealing plate 7 can be pulled by the pull wire 10. The cylinder cover 3 is provided with a wire hole 9. The lower end of the sealing plate is connected to one end of the pull wire 10, and the other end of the pull wire 10 passes through the wire hole 9 and is connected to the pull head 11. It is best to design the pull head 11 to be spherical, so as to better seal the wire hole 9.

[0019] On the other hand, this utility model also has a hole-cleaning function that is completely different from the prior art, such as... Figure 4 As shown, each layer of the screen cylinder 2 includes a cylinder body 12 and a screen 13 disposed at the bottom of the cylinder body 12. A discharge port 14 is provided on one side of the cylinder body 12. It also includes a hole cleaning mechanism, which includes an elastic connecting strip 15. One end of the elastic connecting strip 15 is fixedly disposed on the side wall of the cylinder body 12, and the other end extends inward and downward at an angle, and the end is provided with a striking ball 16, which contacts the screen 13.

[0020] Under high-speed vibration and rotation, the screen 13 of this invention can impact the striking balls 16 installed on the cylinder via the elastic connecting strip 15. The striking balls 16 can continuously strike the screen surface of the screen 13 under high-frequency vibration, thereby loosening the blockage material in the screen holes. Accompanied by the high-speed vibration of the screen 13 itself, the material falls out of the screen holes, resulting in a good cleaning effect. Since this invention does not have a support plate, it can reduce the overall cost and eliminate the need to reserve space for the installation of a support plate, which is of great significance for reducing the height and volume of the equipment.

[0021] The elastic connecting strip 15 can be a single, thick rubber strip, or it can be composed of multiple rubber strips arranged side by side. The latter has better flexibility and a longer service life. Generally, the elastic connecting strip 15 is connected to the side wall of the cylinder 12 via the mounting plate 17 and is secured by bolts or rivets.

[0022] To achieve cleaning of holes at different locations on the screen 13, multiple sets of cleaning mechanisms can be provided on each layer of the screen cylinder 2, and the elastic connecting strips 15 of each set of cleaning mechanisms have different lengths. For example... Figure 5 As shown, the elastic connecting strips 15 of each group of cleaning mechanisms change from short to long, thereby adapting to the cleaning of different annular positions on the screen 13. Considering the rotation of the screen 13, the elastic connecting strips 15 can also be deflected towards the side closer to the rotation direction of the screen 13. As shown in the figure, when the screen 13 rotates counterclockwise, the deflection direction of the elastic connecting strips 15 is adapted to it.

[0023] Based on this, in order to further improve the hole-cleaning performance of this utility model, the striking ball 16 can be made to include a hollow spherical shell 18 and a rubber elastic ball 19 disposed inside the spherical shell 18. In this way, not only can the elastic connecting strip 15 be excited by the screen 13 to generate elastic vibration, but the rubber elastic ball 19 can also further enhance the vibration effect of the striking ball 16.

Claims

1. A rotary vibrating screen with dustproof function, comprising a base (0) and a multi-layer screen cylinder (2) mounted above the base (0) by an elastic column (1); Its features are: The top of the uppermost screen cylinder (2) is provided with an inverted conical cylinder cover (3). The center of the cylinder cover (3) is provided with a feed inlet (4). The feed inlet (4) extends downward to form a feed cylinder (5). The lower end of the feed cylinder (5) is closed. On the left and right sides of the lower end, there are two outwardly inclined downward feeding pipes (6) that communicate with the feed cylinder (5). A sealing plate (7) is provided at the lower end of the feeding pipe (6). A hinge seat (8) is provided on the upper outer surface of the feeding pipe (6). The upper end of the sealing plate (7) and the hinge seat (8) form a hinge that can be abutted and closed under the action of gravity.

2. The rotary vibrating screen with dustproof function according to claim 1, characterized in that: The bottom surface of the feed cylinder (5) is an upward-protruding spherical surface.

3. The rotary vibrating screen with dustproof function according to claim 2, characterized in that: The cylinder cover (3) is provided with a wire hole (9), the lower end of the sealing plate (7) is connected to one end of the pull wire (10), and the other end of the pull wire (10) passes through the wire hole (9) and is connected to the pull head (11).

4. The rotary vibrating screen with dustproof function according to claim 3, characterized in that: The pull head (11) is spherical.

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