Rotary vibration screening device for preparing high-purity graphite

Abstract

The utility model discloses a spin vibration screening device for preparing high purity graphite, and relates to the technical field of graphite preparation, the spin vibration screening device comprises a machine base and a plurality of screening frames, the screening frames are installed above the machine base, and the screening frames are movably installed above the machine base in a stacked mode; the screening nets are installed at the upper ends of the interiors of the screening frames, the diameters of screening holes in the surfaces of the screening nets in the multiple screening frames are different, the diameters of the screening holes in the surfaces of the screening nets are gradually decreased from top to bottom, and conical plates are installed on the surfaces of the bottoms of the screening nets and collect screened materials in a centralized mode; and the materials are intensively conveyed to the center of the screening frame of the next layer through a concentrating pipe at the bottom of the conical plate.

Description

Technical Field

[0001] This utility model relates to the field of graphite preparation technology, specifically to a rotary vibrating sieving device for preparing high-purity graphite. Background Technology

[0002] Pure graphite refers to graphite materials that have undergone deep purification and have extremely low impurity content. Its characteristics include high electrical conductivity, high temperature resistance, chemical inertness, self-lubrication, and excellent thermal stability. After natural graphite ore or artificial graphite raw materials are coarsely crushed by a jaw crusher, a vibrating screen is used to separate qualified particles from large particles that do not meet the standards. The latter are returned to the crusher for secondary processing. Screening can initially remove non-graphite impurities such as mud, sand, and wood chips from the ore, reducing the load on subsequent purification.

[0003] For example, the announcement number CN219664389U is a multi-stage vibrating screen device. The device includes a base, a housing supported by a spring at the top of the base, a first screen layer, a second screen layer and a third screen layer stacked from top to bottom in the housing, and a stirring shaft coaxially rotatably disposed in the housing.

[0004] In the above-mentioned device, the material is directly dispersed in the lower screen without a central mechanism. This leads to a mismatch between the vibration direction and the material drop position, resulting in the formation of flow "dead zones" (where the material stagnates and does not flow) in certain areas. This prevents the material from uniformly covering the entire screen surface, thus hindering the screen from performing sufficient screening. Therefore, we propose a rotary vibrating screen for the preparation of high-purity graphite to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a vibratory sieving device for the preparation of high-purity graphite, in order to solve the problem in the above-mentioned background art where the material is directly dispersed in the lower screen without a central mechanism, which leads to a mismatch between the vibration direction and the material drop position, resulting in the formation of flow "dead zones" (material stagnation and no flow) in certain areas, which cannot evenly cover the entire screen surface and cause the screen to not be able to perform sufficient screening.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rotary vibrating sieving device for preparing high-purity graphite, comprising a base and a sieving frame, wherein the sieving frame is installed above the base, and a plurality of sieving frames are provided and movably stacked above the base;

[0007] Also includes:

[0008] A screen is installed inside the upper part of the screening frame. The diameter of the screen holes on the surface of the screen inside several screening frames is not the same, and the diameter of the screen holes on the surface of the screen decreases from top to bottom. A conical plate is installed on the bottom surface of the screen, and the conical plate is fixed to the bottom surface of the screen by bolts. A central tube is integrally formed at the bottom center of the conical plate, and the central tube connects the upper and lower sides of the conical plate.

[0009] Preferably, a spiral feeder is installed inside the central tube, and the spiral feeder is movably engaged inside the central tube.

[0010] Preferably, a connecting rod is installed at the bottom of the spiral feeder, and the bottom of the connecting rod extends to the surface of the screen below. An arc-shaped ring is provided around the bottom of the connecting rod, and the arc-shaped ring fits against the surface of the screen.

[0011] Preferably, a dust cover is installed at the upper end of the screening frame, and the bottom of the dust cover is connected and fixed to the screening frame by a buckle. The upper middle part of the dust cover is integrally formed with a feed inlet, and the feed inlet is connected to the inside of the dust cover.

[0012] Preferably, the machine base and the screening frame are connected by springs, and several springs are arranged in a circular array and evenly distributed between the machine base and the screening frame.

[0013] Preferably, a discharge channel is provided on the outer side of the screening frame, and the discharge channel is connected to the interior of the screening frame. A discharge port is provided on the bottom side of the discharge channel away from the screening frame, and the discharge port is connected to the interior of the screening frame.

[0014] Preferably, a buffer plate is provided at the center of the dust cover. The buffer plate is installed inside the dust cover by a rotating rod. The two ends of the rotating rod are engaged with the inner wall of the dust cover, and the buffer plate rotates inside the dust cover by the rotating rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] (1) By installing a conical plate at the bottom of the screen at the top of the screening frame, the conical plate collects the material falling through the screen and transports it to the center of the next screening frame through a central pipe at the bottom of the conical plate. After the material falls from the center of the upper screen to the lower screen, it will spread outward in a spiral shape under the action of three-dimensional vibration. This design allows the material to evenly cover the entire screen surface, avoiding local accumulation or underutilization of the screen edges. The path of diffusion from the center outward is longer than the path of falling directly to the edge, increasing the contact time between the material and the screen, giving fine particles more opportunities to pass through the screen holes and improving screening accuracy.

[0017] (2) By installing a spiral feeder inside the central tube, the spiral feeder can buffer and orderly discharge the graphite raw materials falling in a concentrated manner, preventing the graphite raw materials from clogging in the central tube. At the same time, an arc-shaped ring is set at the bottom of the spiral feeder, which can buffer the impact force of the falling graphite raw materials and prevent the graphite raw materials from hitting the surface of the screen and causing damage. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the internal structure of the screening frame of this utility model;

[0020] Figure 3 This is a front sectional view of the overall structure of this utility model;

[0021] Figure 4 This is an enlarged view of the structure at point A of this utility model;

[0022] In the diagram: 1. Dust cover; 2. Feed inlet; 3. Discharge channel; 4. Discharge outlet; 5. Screening frame; 6. Screen; 7. Conical plate; 8. Centralized pipe; 9. Base; 10. Spring; 11. Spiral feeder; 12. Connecting rod; 13. Arc ring; 14. Rotating rod; 15. Buffer plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] This invention provides a vibratory sieving device for the preparation of high-purity graphite. The device includes a base 9 and a sieving frame 5. The sieving frame 5 is mounted above the base 9, and several sieving frames 5 are arranged and movably stacked above the base 9. The base 9 is driven by an internal vibrating motor to generate vibration. The base 9 and the sieving frame 5 are connected by springs 10, and several springs 10 are arranged in a circular array and evenly distributed between the base 9 and the sieving frame 5. This invention mainly solves the problem that in the above-mentioned devices, the material is directly dispersed and falls into the lower screen without a concentrating mechanism. This leads to a mismatch between the vibration direction and the material falling position, resulting in flow "dead zones" (material stagnation) in certain areas, failing to evenly cover the entire screen surface, and causing the screen to not perform sufficient sieving.

[0025] For the device provided by this utility model, please refer to Figure 1-4 The following is a detailed introduction.

[0026] The screen 6 is installed inside the upper part of the screening frame 5. The diameter of the screen holes on the surface of the screen 6 inside several screening frames 5 is not the same, and the diameter of the screen holes on the surface of the screen 6 decreases from top to bottom. A conical plate 7 is installed on the bottom surface of the screen 6, and the conical plate 7 is fixed to the bottom surface of the screen 6 by bolts. A central tube 8 is integrally formed at the bottom center of the conical plate 7, and the central tube 8 connects the upper and lower sides of the conical plate 7.

[0027] Please see Figure 1 and Figure 3 To further explain, a dust cover 1 is installed at the upper end of the uppermost screening frame 5, and the bottom of the dust cover 1 is connected and fixed to the screening frame 5 by a buckle. The upper middle part of the dust cover 1 is integrally formed with a feed inlet 2, and the feed inlet 2 is connected to the interior of the dust cover 1. A buffer plate 15 is set in the center of the interior of the dust cover 1. The buffer plate 15 is installed inside the dust cover 1 by a rotating rod 14. The two ends of the rotating rod 14 are engaged with the inner wall of the dust cover 1, and the buffer plate 15 rotates inside the dust cover 1 by the rotating rod 14.

[0028] Please see Figure 4 To further explain, a spiral feeder 11 is installed inside the central tube 8, and the spiral feeder 11 is movably engaged inside the central tube 8. A connecting rod 12 is installed at the bottom of the spiral feeder 11, and the bottom of the connecting rod 12 extends to the surface of the screen 6 below. An arc-shaped ring 13 is provided around the bottom of the connecting rod 12, and the arc-shaped ring 13 is attached to the surface of the screen 6.

[0029] Please see Figure 1 To further explain, a discharge channel 3 is provided on the outer side of the screening frame 5, and the discharge channel 3 is connected to the interior of the screening frame 5. A discharge port 4 is provided on the bottom side of the discharge channel 3 away from the screening frame 5, and the discharge port 4 is connected to the interior of the screening frame 5, for discharging the screened impurities.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A rotary vibrating sieving device for preparing high-purity graphite, comprising a base (9) and a sieving frame (5), wherein the sieving frame (5) is installed above the base (9), and the sieving frame (5) is provided with a plurality of movably stacked above the base (9); Its features are: Also includes: A screen (6) is installed inside the upper part of the screening frame (5). The diameter of the screen holes on the surface of the screen (6) inside several screening frames (5) is not the same, and the diameter of the screen holes on the surface of the screen (6) decreases from top to bottom. A conical plate (7) is installed on the bottom surface of the screen (6), and the conical plate (7) is fixed to the bottom surface of the screen (6) by bolts. A central tube (8) is integrally formed at the bottom center of the conical plate (7), and the central tube (8) connects the upper and lower sides of the conical plate (7).

2. The vibratory sieving device for preparing high-purity graphite according to claim 1, characterized in that: The central tube (8) is equipped with a spiral feeder (11), and the spiral feeder (11) is movably engaged inside the central tube (8).

3. The vibratory sieving device for preparing high-purity graphite according to claim 2, characterized in that: A connecting rod (12) is installed at the bottom of the spiral feeder (11), and the bottom of the connecting rod (12) extends to the surface of the screen (6) below. An arc-shaped ring (13) is provided around the bottom of the connecting rod (12), and the arc-shaped ring (13) fits against the surface of the screen (6).

4. The vibratory sieving device for preparing high-purity graphite according to claim 1, characterized in that: The upper end of the screening frame (5) is equipped with a dust cover (1), and the bottom of the dust cover (1) is connected and fixed to the screening frame (5) by a buckle. The upper middle part of the dust cover (1) is integrally formed with a feed inlet (2), and the feed inlet (2) is connected to the interior of the dust cover (1).

5. The vibratory sieving device for preparing high-purity graphite according to claim 1, characterized in that: The base (9) and the screening frame (5) are connected by springs (10), and several springs (10) are arranged in a ring array and evenly distributed between the base (9) and the screening frame (5).

6. The vibratory sieving device for preparing high-purity graphite according to claim 1, characterized in that: The screening frame (5) has a discharge channel (3) on its outer side, and the discharge channel (3) is connected to the interior of the screening frame (5). The bottom of the discharge channel (3) is provided with a discharge port (4) on the side away from the screening frame (5), and the discharge port (4) is connected to the interior of the screening frame (5).

7. The vibratory sieving device for preparing high-purity graphite according to claim 4, characterized in that: A buffer plate (15) is provided in the center of the dust cover (1). The buffer plate (15) is installed inside the dust cover (1) by a rotating rod (14). The two ends of the rotating rod (14) are engaged with the inner wall of the dust cover (1), and the buffer plate (15) rotates inside the dust cover (1) by the rotating rod (14).

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