Adjustable graphite material grinding device

Abstract

An adjustable graphite material grinding device comprises a housing, a feed port, a discharge port, a grinding roller disposed within the housing and located below the feed port, a material guide unit disposed at the side of the feed port and used to transport material between the two grinding rollers, and a material control unit disposed at the lower end of the feed port and located above the center of the line connecting the two grinding rollers; the material control unit comprises a drive structure disposed on the housing, a rotating shaft connected to the drive structure and parallel to the grinding roller axis, and a screening drum disposed on the rotating shaft; the screening drum is open on one side away from the rotating shaft, and the inner diameter of the screening drum decreases along the direction from the opening to the bottom surface. The present invention enables the screening drum to have two working modes for guiding materials, achieving the technical effect of flexibly switching the material guide speed according to the grinding rate and force of the grinding rollers, and has the advantages of small space occupation, flexible adjustment, and practicality and economy.

Description

Technical Field

[0001] The invention belongs to the technical field of graphite material processing equipment, and particularly relates to an adjustable graphite material grinding device. Background Art

[0002] Graphite is currently the mainstream choice as anode material for power batteries. The production process involves mixing natural spherical graphite with asphalt, then heating and impregnating it under a preset pressure. The asphalt softens and flows into the pores of the natural spherical graphite. After cooling, an intermediate product is graphitized. The intermediate product then undergoes pulverization, demagnetization, and classification to produce the graphite anode material. The particle size of the raw materials, specifically the pulverization and grinding process, is a key step.

[0003] The grinders in the prior art are unable to adjust the crushing and grinding efficiency and force in a variety of ways, both manually and electronically.

[0004] The document with application publication number CN116474871A discloses an aggregate grinder that can adjust the grinding rate and force, including a shell, a grinding roller, an adjustment component and a feed control component. The feed control component includes a first movable plate, a screening frame and a moving block. The shell is provided with a feed port. The first movable plate is slidably arranged inside the shell. The moving direction of the first movable plate is parallel to the line connecting the two grinding rollers. The screening frame is slidably arranged above the two first movable plates. The two side walls of the shell provided with the first movable plate are provided with first through holes for the screening frame to leave. The two screening frames are slidably provided with moving blocks on the sides away from each other, and the moving blocks are slidably arranged along the height direction of the shell.

[0005] The principle of this device is: by adjusting the screening frame, the time for the aggregate to enter the working end of the grinding roller is controlled. The screening frame and the moving block cooperate to realize the function of the two screening frames working alternately, thereby ensuring that the aggregate will not be excessively accumulated at the working end of the grinding roller while ensuring that the grinding rate and force can be adjusted, making it convenient to use while reducing the possibility of shutdown of the entire device.

[0006] However, the device still has the following problems: the screening frame needs to be translated on the upper end of the grinding roller to adjust the aggregate feeding speed. The structure for achieving translation takes up a large space and is easily blocked by aggregate, which increases the frequency and cost of subsequent maintenance. Summary of the Invention

[0007] In response to the above-mentioned problems, the purpose of the present invention is to provide an adjustable graphite material grinding device. By setting a shell, a feed port, a discharge port, a grinding roller, a material guide unit, and a material control unit, the material control unit has two working modes for guiding materials, and achieves the technical effect of flexibly switching the material guide speed according to the grinding rate and force of the grinding roller, and ultimately achieves the purpose of preventing the material from accumulating on the grinding roller, thereby improving work efficiency, improving grinding quality, and reducing the possibility of downtime. It has the advantages of small space occupation, flexible adjustment, and practicality and economy.

[0008] In order to achieve the above object, the technical solution of the present invention is as follows:

[0009] An adjustable graphite material grinding device comprises a shell, a feed port and a discharge port respectively arranged on the shell, a grinding roller arranged in the shell and located below the feed port, a material guide unit arranged at the side end of the feed port and used to transport the material to between the two grinding rollers, and a material control unit arranged at the lower end of the feed port and located above the center of the line connecting the two grinding rollers; the material control unit comprises a driving structure arranged on the shell, a rotating shaft connected to the driving structure and parallel to the roller axis of the grinding roller, and a screening drum arranged on the rotating shaft; the screening drum is open on one side away from the rotating shaft, and the inner diameter of the screening drum decreases along the direction from the opening to the bottom surface.

[0010] As a further preferred embodiment of the present invention, the screening drum includes two fixed plates arranged at both ends of the rotating shaft, a vertical plate arranged on one side of the fixed plate, a bottom plate arranged on a side of the vertical plate close to the fixed plate and parallel to the rotating shaft, two fixed columns arranged on both ends of the vertical plate away from the fixed plate, and a screen mesh with both ends respectively connected to the side ends of the bottom plate and the fixed columns; the width of the bottom plate is less than the distance between the two fixed columns.

[0011] As a further preferred embodiment of the present invention, an opening matching the screen is provided on the shell, and a sealing door is provided on the opening; the screen includes a first support plate arranged at the upper end of the base plate and slidably connected to the base plate, two second support plates respectively arranged at the side ends of the two fixed columns and slidably connected to the fixed columns, and a screen body respectively arranged at both ends of the first support plate and connected to the two second support plates.

[0012] As a further preferred embodiment of the present invention, the screening drum further includes a support bar provided between the bottom plate and the fixing column and used for supporting the screen body.

[0013] As a further preferred embodiment of the present invention, the support bar is provided with a side opening, and the screen body is provided with a positioning block matching the side opening.

[0014] As a further preferred embodiment of the present invention, the screen includes a vertical baffle arranged on a side away from the vertical plate and used to connect the first support plate and the second support plate.

[0015] As a further preferred embodiment of the present invention, the screen further includes a chute provided on the upper surface of the first support plate, and a material changing plate slidably connected to the chute.

[0016] As a further preferred embodiment of the present invention, the sealing door includes a main body hinged to the side wall of the shell, and a material exchange plate hole provided on the main body.

[0017] As a further preference of the present invention, the sealing door also includes a limit plate hingedly arranged on the main body and located at the hole of the material exchange plate, and a screw arranged on the limit plate; the end of the screw extends to the side end of the material exchange plate close to the opening, and a connecting screw hole matching the screw is provided on the material exchange plate.

[0018] In summary, the present invention has the following beneficial effects:

[0019] The present invention rotates a special-shaped screening drum to enable the screening drum to have two working modes for guiding materials, and the two working modes correspond to fast and slow material guiding speeds respectively, thereby achieving the technical effect of flexibly switching the material guiding speed according to the grinding rate and force of the grinding roller, and ultimately achieving the purpose of preventing material from accumulating on the grinding roller, thereby improving work efficiency, improving grinding quality, and reducing the possibility of downtime. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Attachment Figure 1 It is a structural schematic diagram of the present invention.

[0021] Attachment Figure 2 Schematic diagram of the structure of the material control unit of the present invention when viewed from a side angle.

[0022] Attachment Figure 3 It is a structural schematic diagram of the screening cylinder in the present invention.

[0023] Attachment Figure 4 It is a schematic diagram of the local structure of the screening cylinder in the present invention.

[0024] Attachment Figure 5 It is a schematic diagram of the local structure of the screening cylinder in the present invention.

[0025] Attachment Figure 6 It is a schematic diagram of the local structure of the door sealing in the present invention.

[0026] Attachment Figure 7 This is another working state schematic diagram of the material control unit in the present invention.

[0027] Description of the drawings: housing 11, feed port 12, discharge port 13, grinding roller 14, material guide unit 3, material control unit 4, opening 5, sealing door 6;

[0028] Driving structure 401, rotating shaft 402, screening drum 403;

[0029] Motor 401a, shaft 401b, connecting rod 401c, fixing hole 401d, fastening ring 401e;

[0030] Fixed plate 403a, vertical plate 403b, bottom plate 403c, fixed column 403d, screen 403e, support bar 403f;

[0031] First support plate 403e1, second support plate 403e2, screen body 403e3, vertical baffle 403e4, chute 403e5, and material exchange plate 403e6;

[0032] Bottom groove 403c1, bottom sliding column 403c2;

[0033] Side opening slot 403d1, side sliding post 403d2;

[0034] Side opening 403f1, positioning block 403f2;

[0035] Main body 601 , material exchange plate hole 602 , limit plate 603 , screw 604 , connecting screw hole 605 . DETAILED DESCRIPTION

[0036] In the description of the present invention, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, terms such as "disposed" and "connected" should be understood broadly. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection via an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances. Example 1

[0038] The present embodiment provides an adjustable graphite material grinding device, comprising a shell 11, a feed port 12 and a discharge port 13 respectively arranged on the shell 11, a grinding roller 14 arranged in the shell 11 and located at the lower end of the feed port 12, and also comprising a material guide unit 3 arranged at the side end of the feed port 12 and used to transport the material to between the two grinding rollers 14, and a material control unit 4 arranged at the lower end of the feed port 12 and located at the upper end of the center of the line connecting the two grinding rollers 14; the material control unit 4 comprises a driving structure 401 arranged on the shell 11, a rotating shaft 402 connected to the driving structure 401 and parallel to the roller axis of the grinding roller 14, and a screening drum 403 arranged on the rotating shaft 402; the screening drum 403 is open on one side away from the rotating shaft 402, and the inner diameter of the screening drum 403 decreases along the direction from the opening to the bottom surface.

[0039] It is worth noting that there are two grinding rollers 14, and the center of the line connecting the two grinding rollers 14 is located directly below the center of the feed inlet 12; the entire material control unit 4 is located between the feed inlet 12 and the grinding rollers 14. The grinding rollers 14 have a structure that can adjust the grinding speed and force, but this structure is not the technical point modified by the present invention. Various related structures that can achieve adjustable grinding speed and force are also disclosed in the art, so they are not described in detail in this embodiment.

[0040] It is worth noting that the material guiding unit 3 includes at least two inclined guide plates arranged on the inner wall of the shell 11 and located on both sides of the feed port 12. The purpose of this arrangement is to allow all materials to fall between the grinding rollers 14, thereby improving the grinding efficiency.

[0041] It is worth noting that the screening drum 403 is a cylindrical body at least as long as the grinding roller 14, with sidewalls formed of a screen structure on both sides. The phrase "the screening drum 403 is open on the side facing away from the rotating shaft 402, and the inner diameter of the screening drum 403 decreases gradually from the opening to the bottom" refers to the vertical cross-section of the screening drum 403 being an isosceles trapezoid, bowl, or dish shape, for example. This configuration is intended to ensure that the screening drum 403 guides material entering from the feed inlet 12 at different speeds when in its forward (i.e., open toward the feed inlet 12) and reverse (i.e., open toward the center of the line connecting the grinding rollers 14), thereby achieving the technical effect of varying the feed speed of the grinding roller 14 during operation by rotating the screening drum 403.

[0042] In this embodiment, the drive structure 401 includes a motor 401a mounted on the side wall of the housing 11, a shaft 401b mounted on the motor 401a, two connecting rods 401c mounted on either end of the shaft 401b, fixing holes 401d provided in the connecting rods 401c through which the rotating shaft 402 passes, and a fastening ring 401e mounted on the rotating shaft 402. This arrangement aims to prevent interference with the rotation of the screening drum 403 and to reduce the possibility of material being trapped on the drive structure 401.

[0043] In this embodiment, a specific structure of the screening cylinder 403 may be:

[0044] The screening drum 403 includes two fixed plates 403a arranged at both ends of the rotating shaft 402, a vertical plate 403b arranged on one side of the fixed plate 403a, a bottom plate 403c arranged on the side of the vertical plate 403b close to the fixed plate 403a and parallel to the rotating shaft 402, two fixed columns 403d arranged on both ends of the vertical plate 403b away from the fixed plate 403a, a screen 403e with two ends respectively connected to the side ends of the bottom plate 403c and the fixed columns 403d, and a support bar 403f arranged between the bottom plate 403c and the fixed columns 403d and used to support the screen body 403e3; the width of the bottom plate 403c is less than the distance between the two fixed columns 403d.

[0045] It's worth noting that the vertical plates 403b serve as the end panels of the screening drum 403. The bottom plate 403c and two fixing posts 403d are perpendicular to the vertical plates 403b, and the support bars 403f are parallel to the vertical plates 403b. "The width of the bottom plate 403c being less than the distance between the two fixing posts 403d" is a necessary condition for the aforementioned "the vertical cross-section of the screening drum 403 is an isosceles trapezoid, bowl, or dish shape," and therefore will not be elaborated upon.

[0046] The operating principle of this embodiment is as follows: when the speed of the grinding rollers 14 increases, the opening of the screening drum 403 faces the feed inlet 12, and the material falls through the feed inlet 12 into the screening drum 403. After being screened by the screening drum 403 and guided by the guide plate, the material falls between the two grinding rollers 14 for grinding, and is finally discharged from the discharge port 13. During this process, the function of the screening drum 403 is to reduce the speed at which the material flows between the grinding rollers 14. If large particles accumulate in the screening drum 403, the rotating screening drum 403 can feed the large particles into the grinding rollers 14 for grinding, without stopping the machine for cleaning.

[0047] When the speed of the grinding roller 14 increases, the opening of the screening drum 403 is away from the feed port 12. After the material falls through the feed port 12, most of it falls directly along the outer wall of the screening drum 403 and through the guide plate to be ground between the two grinding rollers 14. A small part passes through the outer wall of the screening drum 403 and falls from the open lower end of the screening drum 403 to be ground between the two grinding rollers 14, and is finally discharged from the discharge port 13. In this process, the material guiding speed of the screening drum 403 for the material is greater than the material guiding speed when the opening of the screening drum 403 is facing the feed port 12.

[0048] Compared with the prior art, the grinding device provided in this embodiment has the following advantages: by rotating a specially shaped screening drum, the screening drum has two working modes for guiding materials, and the two working modes correspond to fast and slow material guiding speeds, respectively, thereby achieving the technical effect of flexibly switching the material guiding speed according to the grinding rate and force of the grinding roller, and ultimately achieving the purpose of preventing material from accumulating on the grinding roller, thereby improving work efficiency, improving grinding quality, and reducing the possibility of downtime. Example 2

[0049] Based on Example 1, this embodiment further optimizes the structure of the screening cylinder, specifically including:

[0050] In this embodiment, the shell 11 is provided with an opening 5 matching the screen 403e, and the opening 5 is provided with a sealing door 6; the screen 403e includes a first support plate 403e1 arranged at the upper end of the bottom plate 403c and slidingly connected to the bottom plate 403c, two second support plates 403e2 respectively arranged at the side ends of the two fixed columns 403d and slidingly connected to the fixed columns 403d, a screen body 403e3 respectively arranged at both ends of the first support plate 403e1 and connected to the two second support plates 403e2, and a vertical baffle 403e4 arranged on the side away from the vertical plate 403b and used to connect the first support plate 403e1 and the second support plate 403e2.

[0051] It is worth noting that the size of the opening 5 matches that of the screen 403e to facilitate removal of the screen 403e from the housing 11. The sealing door 6 is used to close the opening 5 when not in use. The vertical baffle 403e4 primarily functions as a sealing plate for the other end of the screening drum 403, corresponding to the vertical plate 403b. The first support plate 403e1 and the two second support plates 403e2 are located inside the bottom plate 403c and the fixed column 403d, and their thickness is minimized to ensure that the screen body 403e3 fits as closely as possible to the inside of the bottom plate 403c and the fixed column 403d.

[0052] In this embodiment, a possible structure for slidingly connecting the screen 403e to the bottom plate 403c and the fixed post 403d is as follows: the bottom plate 403c is provided with a bottom groove 403c1 having an upper opening and a side opening facing away from the vertical plate 403b; the lower end of the first support plate 403e1 is provided with a bottom sliding post 403c2 that matches the bottom groove 403c1; the side end of the fixed post 403d is provided with a side opening groove 403d1 with an inward opening; the second support plate 403e2 is provided with a side sliding post 403d2 that matches the side opening groove 403d1; the support bar 403f is provided with a side opening 403f1; and the screen body 403e3 is provided with a positioning block 403f2 that matches the side opening 403f1.

[0053] This embodiment further optimizes the structure of the screening drum and adds the function of replacing the screen mesh in the screening drum, thereby further improving the accuracy of changing and adjusting the material discharge speed by replacing the screen mesh. Example 3

[0054] This embodiment optimizes the structure of the screen 403e based on the embodiment 2, specifically including:

[0055] In this embodiment, the screen 403e further includes a slide groove 403e5 provided on the upper surface of the first support plate 403e1, and a material exchange plate 403e6 slidably connected to the slide groove 403e5.

[0056] In this embodiment, the sealing door 6 includes a main body 601 hinged to the side wall of the shell 11, a material exchange plate hole 602 arranged on the main body 601, a limit plate 603 hingedly arranged on the main body 601 and located at the material exchange plate hole 602, and a screw 604 arranged on the limit plate 603; the end of the screw 604 extends to the side end of the material exchange plate 403e6 close to the opening 5, and a connecting screw hole 605 matching the screw 604 is provided on the material exchange plate 403e6.

[0057] The purpose of such arrangement in this embodiment is mainly that: when the screening drum 403 is open and working toward the feed port 12, as time goes by, the large particles of material accumulated in the screening drum 403 increase, affecting the material guiding speed of the screening drum 403. At this time, the limit plate 603 can be unscrewed to rotate the screw 604 deep into the shell 11 until it is connected with the connecting screw hole 605, and then the material exchange plate 403e6 is moved out of the material exchange plate hole 602 by pulling the screw 604, so as to remove the accumulated large particles of material.

[0058] It is worth noting that there are at least two material exchange plates 403e6, which are stacked up and down and installed in the chute 403e5. This arrangement allows the lower material exchange plate to continue receiving materials when the upper material exchange plate is removed from the shell to clear the material, thus avoiding device shutdown.

[0059] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

Claims

1. An adjustable graphite material grinding device, comprising a housing (11), a feed port (12) and a discharge port (13) respectively arranged on the housing (11), and a grinding roller (14) arranged in the housing (11) and located below the feed port (12), characterized in that: The invention also includes a material guide unit (3) arranged at the side end of the feed port (12) and used for conveying the material to between the two grinding rollers (14), and a material control unit (4) arranged at the lower end of the feed port (12) and located above the center of the connection line between the two grinding rollers (14); the material control unit (4) includes a driving structure (401) arranged on the housing (11), a rotating shaft (402) connected to the driving structure (401) and parallel to the roller axis of the grinding roller (14), and a screening drum (403) arranged on the rotating shaft (402); the screening drum (403) is open on a side away from the rotating shaft (402), and the inner diameter of the screening drum (403) decreases along the direction from the opening to the bottom surface; The screening drum (403) comprises two fixed plates (403a) arranged at both ends of the rotating shaft (402), a vertical plate (403b) arranged on one side of the fixed plate (403a), a bottom plate (403c) arranged on a side of the vertical plate (403b) close to the fixed plate (403a) and parallel to the rotating shaft (402), two fixed columns (403d) arranged on both ends of the vertical plate (403b) away from the fixed plate (403a), and a screen (403e) having two ends respectively connected to the side ends of the bottom plate (403c) and the fixed columns (403d); the width of the bottom plate (403c) is smaller than the distance between the two fixed columns (403d); The shell (11) is provided with an opening (5) matching the screen (403e), and the opening (5) is provided with a sealing door (6); the screen (403e) comprises a first support plate (403e1) provided at the upper end of the bottom plate (403c) and slidably connected to the bottom plate (403c), two second support plates (403e2) respectively provided at the side ends of the two fixed columns (403d) and slidably connected to the fixed columns (403d), and a screen body (403e3) respectively provided at both ends of the first support plate (403e1) and connected to the two second support plates (403e2).

2. The adjustable graphite material grinding device according to claim 1, characterized in that: The screening cylinder (403) further comprises a support bar (403f) disposed between the bottom plate (403c) and the fixing column (403d) and used for supporting the screen body (403e3).

3. The adjustable graphite material grinding device according to claim 2, characterized in that: The support bar (403f) is provided with a side opening (403f1), and the screen body (403e3) is provided with a positioning block (403f2) matching the side opening (403f1).

4. The adjustable graphite material grinding device according to claim 1, characterized in that: The screen (403e) comprises a vertical baffle (403e4) arranged on a side away from the vertical plate (403b) and used to connect the first support plate (403e1) and the second support plate (403e2).

5. The adjustable graphite material grinding device according to claim 1, characterized in that: The screen (403e) further includes a slide groove (403e5) provided on the upper surface of the first support plate (403e1), and a material exchange plate (403e6) slidably connected to the slide groove (403e5).

6. The adjustable graphite material grinding device according to claim 5, characterized in that: The sealing door (6) comprises a main body (601) hinged to the side wall of the shell (11), and a material exchange plate hole (602) provided on the main body (601).

7. The adjustable graphite material grinding device according to claim 6, characterized in that: The sealing door (6) further comprises a limiting plate (603) hingedly arranged on the body (601) and located at the material exchange plate hole (602), and a screw (604) arranged on the limiting plate (603); the end of the screw (604) extends to the side end of the material exchange plate (403e6) close to the opening (5), and a connecting screw hole (605) matching the screw (604) is provided on the material exchange plate (403e6).

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