Graphite powder grading and screening device

Abstract

The utility model relates to the field of grading screening, concretely relates to a graphite powder body grading screening device, including screening cylinder: the top of screening cylinder is fixedly connected with the upper cover plate, the top of upper cover plate is fixedly connected with the primary screening spare, the inside of screening cylinder is fixed from top to bottom and is sequentially provided with first filter screen and second filter screen, the below of first filter screen is provided with rice character support frame, through setting by feed inlet, primary filter screen, slide rail, sliding block, drive link, rotary lever, rocker and cleaning rod etc. constitute primary screening spare, and the staff can drive cleaning rod reciprocating motion in feed inlet through rotary rocker, and the accumulated graphite powder is pushed and scattered, avoids the primary filter screen and blocks up because of powder accumulation, ensures the smooth feeding, improves screening efficiency and continuity.

Description

Technical Field

[0001] This utility model belongs to the field of grading and screening, and specifically relates to a graphite powder grading and screening device. Background Technology

[0002] In industrial production, graphite powder is widely used in batteries, electronics, metallurgy, and other fields due to its excellent electrical conductivity, lubricity, and high-temperature resistance. Different applications have strict requirements on the purity and particle size distribution of graphite powder, therefore, it is necessary to use a classification and screening device to refine the graphite powder and separate products that meet the specifications.

[0003] However, most common graphite powder screening devices employ a single structure, using vibration or airflow to move the powder and achieve classification. However, during the feeding process, graphite powder tends to accumulate at the inlet, causing blockage of the primary filter structure, affecting feeding efficiency and screening continuity. Furthermore, during multi-stage screening using vibration, the upper filter screen is prone to deformation or damage due to the pressure from the powder, reducing screening accuracy and equipment lifespan. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of traditional graphite powder screening devices in the background art, such as easy clogging of the feed and easy damage of the filter screen, resulting in low screening efficiency and short equipment life, so as to realize a graphite powder classification and screening device.

[0005] To achieve the above-mentioned objectives, the technical solution of this utility model is: a graphite powder grading and screening device, comprising a screening cylinder:

[0006] The top of the screening cylinder is fixedly connected to an upper cover plate, and the top of the upper cover plate is fixedly connected to a primary screening component.

[0007] The screening cylinder has a first filter screen and a second filter screen fixedly installed inside from top to bottom, and a cross-shaped support frame is installed below the first filter screen.

[0008] In the graphite powder grading and screening device described above, the primary screening component includes a feed inlet, a primary filter screen, a slide rail, and a cleaning mechanism.

[0009] The feed inlet is fixed to the top of the upper cover plate and communicates with the interior of the upper cover plate;

[0010] The slide rail is fixed to one side wall of the feed inlet, and the cleaning mechanism includes a slider slidably disposed in the slide rail, a connecting rod fixed to the slider, and a cleaning rod disposed inside the feed inlet;

[0011] The connecting rod passes through the through hole in the side wall of the feed inlet and is connected to the cleaning rod.

[0012] In the graphite powder grading and screening device described above, the cleaning mechanism further includes a rotating shaft, a transmission rod, a rotating rod, and a rocker arm;

[0013] The rocker arm is rotatably mounted on one side of the slide rail and is connected to one end of the rotating rod via the rotating shaft;

[0014] The other end of the rotating rod is rotatably connected to one end of the transmission rod, and the other end of the transmission rod is rotatably connected to the slider.

[0015] In the graphite powder grading and screening device described above, vibration motors are fixed on both outer walls of the screening cylinder.

[0016] The bottom of the screening cylinder is provided with a support frame, and multiple return springs are arranged in a circumferential array on the top of the support frame. The top of the return springs is fixedly connected to the bottom of the screening cylinder.

[0017] In the graphite powder grading and screening device described above, the sieving cylinder and the side wall of the upper cover plate are respectively connected to a discharge cylinder.

[0018] The discharge cylinder is located above the first filter screen and the second filter screen;

[0019] The discharge cylinder is equipped with a rotatable baffle inside, and a wrench is fixed on the outer wall to control the rotation angle of the baffle.

[0020] In the graphite powder grading and screening device described above, the bottom of the cross-shaped support frame is connected to a connecting cylinder, and both ends of the connecting cylinder are fixed to the inner wall of the screening cylinder.

[0021] A gap is reserved between the bottom of the first filter screen and the top of the cross-shaped support frame.

[0022] In the graphite powder grading and screening device described above, the outer peripheral edges of the first filter screen and the second filter screen are fixedly connected to the inner wall of the screening cylinder.

[0023] Compared with the prior art, the graphite powder classification and screening device of this utility model has at least the following beneficial effects:

[0024] 1. By setting up a primary screening component consisting of a feed inlet, a primary filter screen, a slide rail, a slider, a transmission rod, a rotating rod, a rocker arm, and a cleaning rod, the operator can rotate the rocker arm to drive the cleaning rod to reciprocate within the feed inlet, thus dispersing the accumulated graphite powder, preventing the primary filter screen from clogging due to powder accumulation, ensuring smooth feeding, and improving screening efficiency and continuity.

[0025] 2. The primary filter screen can perform preliminary filtration of graphite powder before it enters the sieving cylinder, intercepting some impurities or agglomerated particles that are significantly too large. This setting reduces the sieving burden on the first and second filters, prevents large particles from directly entering subsequent screening stages and affecting the classification accuracy, and reduces the impact and wear of large particles on subsequent filters, indirectly extending the service life of the overall screening device and improving the purity of the final product.

[0026] 3. A star-shaped support frame is installed below the first filter screen and fixed inside the screening cylinder via a connecting cylinder, providing stable support for the first filter screen. During the vibration screening process, this effectively alleviates the deformation of the first filter screen caused by the pressure of the powder, reduces the possibility of filter screen damage, thereby improving screening accuracy and extending the service life of the equipment. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the first overall structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the second overall structure of this utility model;

[0029] Figure 3 This is a schematic diagram of the primary screening component of this utility model;

[0030] Figure 4 This is a first sectional view of the entire utility model;

[0031] Figure 5 This is a second sectional view of the entire utility model.

[0032] In the diagram: 1. Screening cylinder; 2. Top cover plate;

[0033] 3. Primary screening components; 301. Feed inlet; 302. Primary filter screen; 303. Slide rail; 304. Cleaning rod; 305. Connecting rod; 306. Sliding block; 307. Rotating shaft; 308. Transmission rod; 309. Rotating rod; 3010. Rocker arm;

[0034] 4. Vibration motor; 5. Discharge cylinder; 6. Support frame; 7. Return spring; 8. Wrench; 9. Baffle; 10. Connecting cylinder; 11. First filter screen; 12. Star-shaped support frame; 13. Second filter screen. Detailed Implementation

[0035] The graphite powder grading and screening device of this utility model will be described in more detail below with reference to the accompanying drawings and specific embodiments.

[0036] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] This embodiment discloses a graphite powder grading and screening device. Traditional graphite powder screening devices suffer from drawbacks such as easy clogging of the feed and easy damage to the filter screen, resulting in low screening efficiency and short equipment life. Referring to... Figures 1-5 It mainly includes a screening cylinder 1, with an upper cover plate 2 fixedly connected to the top of the screening cylinder 1, and a primary screening component 3 fixedly connected to the top of the upper cover plate 2; a first filter screen 11 and a second filter screen 13 are fixedly arranged inside the screening cylinder 1 from top to bottom, and a cross-shaped support frame 12 is arranged below the first filter screen 11.

[0038] The top of the screening cylinder 1 is detachably connected to the upper cover plate 2 via a flange, facilitating the maintenance of internal components. The upper cover plate 2 integrates the primary screening component 3, whose feed channel is equipped with an inclined guide surface, which, together with the multi-stage filtration system below, achieves powder pre-dispersion. The first filter screen 11 and the second filter screen 13 are arranged in a stepped manner. To enhance the structural stability of the first filter screen 11 during the screening process, a cross-shaped support frame 12 is correspondingly provided below it, which provides necessary support for the first filter screen 11.

[0039] Reference Figures 1-3 The primary screening component 3 includes a feed inlet 301, a primary filter screen 302, a slide rail 303, and a cleaning mechanism. The feed inlet 301 is fixed to the top of the upper cover plate 2 and communicates with the interior of the upper cover plate 2. The slide rail 303 is fixed to one side wall of the feed inlet 301. The cleaning mechanism includes a slider 306 slidably disposed in the slide rail 303, a connecting rod 305 fixed to the slider 306, and a cleaning rod 304 disposed inside the feed inlet 301. The connecting rod 305 passes through the through hole in the side wall of the feed inlet 301 and is connected to the cleaning rod 304.

[0040] The feed inlet 301 of the primary screening component 3 is longitudinally extended with a slide rail 303, which is embedded with a slider 306 that can slide linearly. The slider 306 is linked with the cleaning rod 304 inside the feed inlet 301 through a vertically fixed connecting rod 305. The connecting rod 305 moves back and forth along the longitudinal through hole opened on the side wall of the feed inlet 301, driving the cleaning rod 304 to form a covering sweeping trajectory on the surface of the primary filter screen 302, ensuring that the powder falls evenly while avoiding local accumulation.

[0041] The cleaning mechanism also includes a rocker arm 3010, a rotating rod 309, and a transmission rod 308. The rocker arm 3010 is rotatably mounted on one side of the slide rail 303 and is connected to one end of the rotating rod 309 via a rotating shaft 307. The other end of the rotating rod 309 is rotatably connected to one end of the transmission rod 308, and the other end of the transmission rod 308 is rotatably connected to the slider 306.

[0042] The cleaning mechanism forms a crank-slider transmission system through rocker arm 3010, rotating rod 309, and transmission rod 308. When rocker arm 3010 rotates around a fixed axis, it drives rotating rod 309 to perform planar motion. Its end is hinged to transmission rod 308 through rotating shaft 307. The other end of transmission rod 308 is rotatably connected to slider 306, thereby converting the rotational motion of rocker arm 3010 into linear reciprocating motion of slider 306 in slide rail 303, realizing the periodic sweeping of primary filter screen 302 by cleaning rod 304.

[0043] Reference Figure 1 , Figure 2 and Figure 4 as well as Figure 5 Vibration motors 4 are fixed to the outer walls of both sides of the screening cylinder 1; a support frame 6 is provided at the bottom of the screening cylinder 1, and multiple return springs 7 are arranged in a circular array on the top of the support frame 6, with the top of the return springs 7 fixedly connected to the bottom of the screening cylinder 1. The side walls of the screening cylinder 1 and the upper cover plate 2 are respectively connected to the discharge cylinder 5; the discharge cylinder 5 is located above the first filter screen 11 and the second filter screen 13; a baffle 9 is rotatably provided inside the discharge cylinder 5, and a wrench 8 for controlling the rotation angle of the baffle 9 is fixed on the outer wall.

[0044] The bottom of the star-shaped support frame 12 is connected to a connecting cylinder 10, and both ends of the connecting cylinder 10 are fixed to the inner wall of the screening cylinder 1; a gap is reserved between the bottom of the first filter screen 11 and the top of the star-shaped support frame 12. The outer peripheral edges of the first filter screen 11 and the second filter screen 13 are fixedly connected to the inner wall of the screening cylinder 1.

[0045] The vibration motors 4, symmetrically arranged on the outer wall of the screening cylinder 1, drive the powder movement inside the screening cylinder 1 through high-frequency micro-vibration. The vibration amplitude ensures that the filter screen is evenly stressed while avoiding resonance. The reset springs 7 at the top of the support frame 6 form an elastic support system. The spring array along the bottom of the screening cylinder 1 creates a flexible suspension in the vertical direction, ensuring both vibration transmission efficiency and noise reduction. The discharge cylinder 5 adopts a slanted cut design, with its inlet located at a preset distance above the filter screen. The baffle 9 can be steplessly adjusted from 0 to 90° using a wrench 8, and a torsion spring is installed at the rotating shaft to achieve self-locking. The cross-beam structure of the cross-beam support frame 12 is rigidly connected to the inner wall of the screening cylinder 1 via the connecting cylinder 10. The edge of the filter screen is sealed and fixed to the inner wall of the screening cylinder 1 by an annular pressure frame. The distance between the middle of the screen and the support frame 12 ensures smooth powder fall.

[0046] The working principle of the graphite powder grading and screening device of this utility model is as follows: First, the external conveying device is set above the feed inlet 301 or connected to the top of the feed inlet 301. The graphite powder is filtered through the primary filter screen 302 and then enters the interior of the screening cylinder 1. In order to prevent the graphite powder from accumulating on the filter screen and clogging it, the operator can turn the rocker arm 3010. The rocker arm 3010 drives the rotating rod 309 to rotate. The rotating rod 309 drives the transmission rod 308 to rotate. The transmission rod 308 drives the slider 306 to reciprocate within the slide rail 303. The slider 306 drives the connecting rod 305 and the cleaning rod 304 to reciprocate. The cleaning rod 304 pushes away the graphite powder accumulated in the feed inlet 301.

[0047] Graphite powder first falls onto the first filter screen 11. The vibration motor 4 is started to vibrate and screen the graphite powder. As graphite powder accumulates on the first filter screen 11, the screening cylinder 1 vibrates at the same time, and the cross support frame 12 can support the first filter screen 11.

[0048] The graphite powder then falls onto the second filter screen 13, and is discharged after being filtered by the second filter screen 13.

[0049] Open the wrench 8 on the discharge cylinder 5, rotate the baffle 9, and continue to start the vibration motor 4 to discharge the large particles filtered out of the filter screen through the discharge cylinder 5.

[0050] It should be noted that, in actual implementation, the structure depicted in the accompanying drawings is not a fixed or unchanging embodiment. The components of the embodiments of this invention described and shown in these drawings can typically be arranged and designed in various different configurations. Furthermore, the accompanying drawings and abstract drawings are merely illustrative and do not represent the specific structure or actual quantity in a concrete implementation.

[0051] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The use of terms such as "a" or "an" in this specification and claims does not necessarily indicate a limitation on quantity. Terms such as "comprising" or "including" mean that the element or component preceding the word encompasses the element or component listed following the word and its equivalents, without excluding other elements or components. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0052] The exemplary embodiments of the present invention have been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of the present invention, and various combinations can be made to the various technical features and structures proposed by the present invention without exceeding the protection scope of the present invention.

Claims

1. A graphite powder grading and screening device, comprising a screening cylinder (1), characterized in that: The top of the screening cylinder (1) is fixedly connected to an upper cover plate (2), and the top of the upper cover plate (2) is fixedly connected to a primary screening component (3); The screening cylinder (1) is fixedly provided with a first filter screen (11) and a second filter screen (13) from top to bottom inside, and a cross-shaped support frame (12) is provided below the first filter screen (11).

2. The graphite powder classification and screening device according to claim 1, characterized in that: The primary screening component (3) includes a feed inlet (301), a primary filter screen (302), a slide rail (303), and a cleaning mechanism; the feed inlet (301) is fixed to the top of the upper cover plate (2) and communicates with the interior of the upper cover plate (2); The slide rail (303) is fixed to one side wall of the feed inlet (301), and the cleaning mechanism includes a slider (306) slidably disposed in the slide rail (303), a connecting rod (305) fixed to the slider (306), and a cleaning rod (304) disposed inside the feed inlet (301). The connecting rod (305) passes through the through hole in the side wall of the feed inlet (301) and is connected to the cleaning rod (304).

3. The graphite powder classification and screening device according to claim 2, characterized in that: The cleaning mechanism also includes a rotating shaft (307), a transmission rod (308), a rotating rod (309), and a rocker arm (3010); The rocker arm (3010) is rotatably mounted on one side of the slide rail (303) and is connected to one end of the rotating rod (309) via the rotating shaft (307); The other end of the rotating rod (309) is rotatably connected to one end of the transmission rod (308), and the other end of the transmission rod (308) is rotatably connected to the slider (306).

4. The graphite powder classification and screening device according to claim 1, characterized in that: Vibration motors (4) are fixed on both outer walls of the screening cylinder (1); The bottom of the screening cylinder (1) is provided with a support frame (6), and a plurality of return springs (7) are arranged in a circumferential array on the top of the support frame (6). The top of the return springs (7) is fixedly connected to the bottom of the screening cylinder (1).

5. The graphite powder classification and screening device according to claim 1, characterized in that: The side walls of the screening cylinder (1) and the upper cover plate (2) are respectively connected to the discharge cylinder (5); The discharge cylinder (5) is located above the first filter screen (11) and the second filter screen (13); The discharge cylinder (5) is equipped with a baffle (9) inside, and a wrench (8) is fixed on the outer wall to control the rotation angle of the baffle (9).

6. The graphite powder classification and screening device according to claim 1, characterized in that: The bottom of the cross-shaped support frame (12) is connected to a connecting cylinder (10), and both ends of the connecting cylinder (10) are fixed to the inner wall of the screening cylinder (1). A gap is reserved between the bottom of the first filter screen (11) and the top of the cross support frame (12).

7. The graphite powder classification and screening device according to claim 1, characterized in that: The outer peripheral edges of the first filter screen (11) and the second filter screen (13) are fixedly connected to the inner wall of the screening cylinder (1).

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