Graphite shaping machine

Abstract

The utility model discloses a graphite shaping machine. The graphite shaping machine comprises a grinding cavity defined by a shell, and the shell is provided with a feeding port and a discharging port which are communicated with the outside; the cutter head is arranged in the grinding cavity and connected with the driving device, and at least one circle of needle-shaped columns which are distributed at intervals in the circumferential direction of the cutter head and extend towards the direction of the feeding port are arranged at the edge of the cutter head; the flow guide part is arranged between the feeding port and the cutter head, a channel for materials to flow is formed in the middle of the flow guide part, and a hollow part is arranged in the peripheral area, away from the channel, of the flow guide part. The flow guide part is arranged between the cutterhead and the feeding opening, so that the grinding cavity is divided into the area close to the feeding opening and the area close to the cutterhead. In the working process, materials enter the near-cutter-head area from the near-feeding-port area through the channel and flow to the near-feeding-port area through the hollow-out part after being smashed and shaped, circulation is conducted, and then the specific surface area of the obtained spherical graphite is low.

Description

Technical Field

[0001] The present application generally relates to the technical field of preparation of negative electrode materials for lithium batteries. More specifically, the present application relates to a graphite shaping machine. Background Art

[0002] Graphite is a gray-black, opaque solid that is the primary raw material for lithium battery anodes. Before battery production, the graphite undergoes a series of processes, including crushing, shaping, coating, and carbonization. These two processes are typically performed by a graphite nodulizer.

[0003] Currently, spheroidization and shaping equipment are mainly divided into grinding equipment and air flow impact equipment, both of which use mechanical force to spheroidize the surface of graphite. Among them, the typical representative of the grinding method is the stirred mill, which mainly performs wet grinding and requires drying after grinding. The spherical graphite produced by this method has a wide particle size distribution and a low yield, and the product is not suitable for battery negative electrode materials. Typical representatives of the air flow impact method are high-speed air flow impact granulators and air flow vortex micro-powder machines. The high-speed air flow impact granulator is a dry spheroidization equipment. Although this equipment is environmentally friendly, it is limited by its volume. It is currently mainly used for small-scale multi-batch production at the laboratory level and cannot be used for large-scale continuous production. The air flow vortex micro-powder machine is a continuous type of equipment. Although it has a large processing capacity, due to its long production line, it usually requires more than a dozen or even dozens of spheroidization cascade processes, resulting in low production efficiency.

[0004] Existing spheroidizing equipment not only has low production efficiency but also produces spherical graphite with a high specific surface area. The specific surface area of ​​spherical graphite is closely related to battery discharge efficiency and safety. If the specific surface area is too large, lithium deposition will occur, resulting in increased consumption of specific surface energy, which will affect the normal performance of the battery's effective capacity and cause overheating during charging, making the battery unsafe.

[0005] In view of this, there is an urgent need to provide a graphite shaping machine that can reduce the specific surface area of ​​the product while improving the production efficiency of the product. Utility Model Content

[0006] In order to at least solve one or more of the technical problems mentioned above, the present application proposes a graphite shaping machine.

[0007] The graphite shaping machine provided in the present application includes a driving device and a grinding chamber surrounded by a shell, the shell having a feed port and a discharge port connected to the outside world, and also includes: a cutter disc, which is arranged in the grinding chamber and connected to the driving device, and has at least one circle of needle-shaped columns distributed along its circumferential direction at the edge of the cutter disc, and the needle-shaped columns extend toward the front side wall where the feed port is located; and a guide portion, which is arranged between the feed port and the cutter disc; a channel for material flow is provided in the middle of the guide portion, and a hollow portion is provided in the outer peripheral area of ​​the guide portion away from the channel.

[0008] In some embodiments, the guide portion includes a guide member and a guide vane; the guide member includes a plate-like structure with a certain thickness, the plate-like structure has a circular through hole in the middle, and the hollow portion is distributed circumferentially along the outer periphery of the plate-like structure; the guide vane is a hollow truncated cone structure, the large diameter end of the truncated cone structure is connected to the edge of the circular through hole on the plate-like structure, and the small diameter end of the truncated cone structure is extended toward the direction of the cutter disc.

[0009] In some embodiments, the guide member includes a first annular member and a second annular member arranged coaxially, and the inner circumferential wall of the first annular member and the outer circumferential wall of the second annular member are connected by at least two connecting ribs; the hollow portion is the area between two adjacent connecting ribs; the outer circumferential wall of the first annular member abuts the inner circumferential wall of the grinding chamber, and the guide plate is connected to the second annular member.

[0010] In some embodiments, the center of the feed port, the center of the guide portion, and the center of the cutter disc are collinearly arranged.

[0011] In some embodiments, the graphite shaping machine further comprises: a gear ring, which is an annular member with a certain width, the outer surface of which is fixedly abutted against the peripheral wall of the cylindrical grinding chamber, and the inner surface of which has a plurality of spaced protrusions.

[0012] In some embodiments, the width of the ring gear is not less than the width of the impeller.

[0013] In some embodiments, one end of the gear ring abuts against the inner surface of the rear side wall of the shell, and the other end abuts against the first annular member, and the thickness of the gear ring is not less than the thickness of the first annular member.

[0014] In some embodiments, the included angle between the guide plate and the second annular member is 130 degrees to 140 degrees.

[0015] In some embodiments, a funnel is connected to the feed port, and the material flows into the grinding chamber through the funnel.

[0016] In some embodiments, the shell is a cylindrical structure, which includes a front side wall and a rear side wall that are oppositely arranged, and a peripheral wall with two ends respectively connected to the front side wall and the rear side wall; the discharge port is located on the peripheral wall of the shell.

[0017] Through the graphite shaping machine provided above, the embodiment of the present application is provided with a guide portion between the cutter disc and the feed port, the middle area of ​​the guide portion is provided with a channel for material flow, and a hollow portion is provided between the outer periphery of the guide portion and the peripheral wall of the grinding chamber. This solution divides the entire grinding chamber into a near-feed port area and a near-cutter disc area through the design of the guide portion. During operation, due to the rotation of the cutter disc, the material enters the near-feed port area from the near-feed port area through the channel on the guide portion, and after being crushed and shaped, it flows from the near-cutter disc area through the hollow portion to the near-feed port area, and the cycle repeats, thereby achieving multiple uniform crushing and shaping of the material, meeting the particle size requirements, and reducing the specific surface area of ​​the spherical graphite. Further in some embodiments, the first annular member and the second annular member are connected by connecting ribs, and the area between the two adjacent connecting ribs constitutes a hollow portion. The area of ​​the hollow portion is larger, making it easier for the material in the near-cutter disc area to enter the near-inlet area, improving the circulation efficiency of the material, and thereby improving the production efficiency of spherical graphite. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other objects, features and advantages of the exemplary embodiments of the present application will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present application are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0019] Figure 1 A side cross-sectional view of a graphite shaping machine according to an embodiment of the present application is shown;

[0020] Figure 2 A front view of a flow guide portion according to an embodiment of the present application is shown;

[0021] Figure 3 A front view of a cutter head according to an embodiment of the present application is shown;

[0022] Figure 4 A front view of a ring gear according to an embodiment of the present application is shown;

[0023] Figure 5 Shows a side view of the rear side wall and the peripheral wall of an embodiment of the present application;

[0024] Figure 6 A front view of the front side wall of an embodiment of the present application is shown;

[0025] Figure 7 A schematic diagram showing an embodiment of the present application in which the discharge port is arranged on the peripheral wall is shown.

[0026] 100. Graphite shaping machine;

[0027] 101. Grinding chamber; 102. Feed inlet; 103. Discharge outlet; 104. Cutter head; 105. Flow guide; 106. Ring gear; 107. Funnel; 108. Front side wall; 109. Rear side wall; 110. Peripheral wall; 111. Fixing hole; 112. Driving device; 113. Cylinder receiving device; 114. Assembly hole;

[0028] 1041. Needle-shaped column; 1051. Guide member; 1052. First annular member; 1053. Second annular member; 1054. Connecting rib; 1055. Hollow portion; 1056. Guide plate; 1061. Bump. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0030] It should be understood that the terms "include" and "comprising" used in the description and claims of this application indicate the presence of described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0031] It should also be understood that the terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this application. As used in this specification and claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should also be further understood that the term "and / or" as used in this specification and claims refers to any and all possible combinations of one or more of the associated listed items, including and including these combinations.

[0032] As used in this specification and claims, the term "if" can be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0033] The specific implementation of the present application will be described in detail below with reference to the accompanying drawings.

[0034] The present application provides a graphite shaping machine 100. This machine is used to modify the surface of large-particle graphite to produce small and uniform spherical graphite, which can be used as a negative electrode material for lithium batteries. The following describes the graphite shaping machine 100 in detail.

[0035] like Figure 1 As shown in a side cross-sectional view, the graphite shaping machine 100 provided in this application includes a grinding chamber 101 enclosed by a housing. The grinding chamber 101 houses a grinding assembly that grinds the large-sized graphite in the grinding chamber 101 into small-sized spherical graphite. The housing is also provided with an inlet 102 and an outlet 103 at various locations, each connected to the outside world. Large-sized graphite enters the grinding chamber 101 through the inlet 102, and the ground small-sized spherical graphite exits the grinding chamber 101 through the outlet 103.

[0036] In the solution of the present application, the shell includes a front side wall 108, a rear side wall 109 corresponding to the front side wall 108, and a peripheral wall 110 connecting the front side wall 108 and the rear side wall 109, wherein the feed port 102 is opened on the front side wall 108, and the discharge port 103 is opened on the peripheral wall 110. Figure 3 As shown in the front view of the cutter disc, the grinding assembly in the grinding chamber 101 is the cutter disc 104. The cutter disc 104 comprises a circular cutter disc body and needle-like posts 1041 spaced circumferentially along the cutter disc body. Specifically, the front face of the cutter disc body faces the front sidewall 108 of the housing, while the back face faces the rear sidewall 109 of the housing. The needle-like posts 1041 are positioned at the front edge of the cutter disc 104 and extend toward the front sidewall 108 of the housing.

[0037] In the solution of the present application, the grinding chamber 101 is provided with not only a cutter disc 104 but also a flow guide 105, wherein the flow guide 105 is provided between the feed port 102 and the cutter disc 104. Specifically, the middle of the flow guide 105 is provided with a channel for the flow of materials, and the peripheral area of ​​the flow guide 105 away from the channel is provided with a hollow portion 1055. More specifically, the flow guide 105 includes a flow guide 1051 and a flow guide vane 1056. The flow guide 1051 includes a plate-like structure with a certain thickness, the middle of the plate-like structure has a circular through hole, and the peripheral area of ​​the plate-like structure is provided with at least two hollow portions at circumferential intervals. The flow guide vane is a hollow truncated cone-shaped structure, the large diameter end of the truncated cone-shaped structure is connected to the edge of the circular through hole on the plate-like structure, and the small diameter end of the truncated cone-shaped structure is extended toward the cutter disc. That is to say, the channel for material flow in this solution is formed by the middle area of ​​a truncated cone structure formed by the guide plate 1056 in the accommodating cavity, and the cross section of the truncated cone structure is as follows: Figure 1 The trapezoid shown in .

[0038] In the above solution, the cutterhead 104 is connected to a drive device 112, which provides driving force for the cutterhead 104 to rotate and grind the graphite. Specifically, the drive device 112 is located outside the grinding chamber 101 and is connected to the middle area of ​​the cutterhead 104 in the grinding chamber 101 via a drive shaft that passes through the rear side wall 109 of the housing. The drive device 112 in this solution can be controlled using a variable frequency speed regulation method. In other words, the drive device 112 allows the operator to precisely control the rotation speed of the cutterhead 104 according to processing requirements, thereby adapting to different processing conditions and material properties. In addition, the power of the drive device 112 in this solution can also be adjusted. In other words, the drive device 112 can control the output power of the motor by adjusting the power supply voltage and frequency. This means that when in use, the operator can adjust the power output of the motor according to the workload and efficiency requirements of the graphite shaping machine 100 to optimize energy efficiency and processing results.

[0039] In an embodiment of the present application, a guide portion 105 is provided between the cutter disc 104 and the feed port 102 to divide the grinding chamber 101 into two functional areas: an area near the feed port and an area near the cutter disc. The operating procedure during use is as follows: first, close the discharge port 103 and open the feed port 102 to feed the material. After the feeding is completed, close the feed port 102 to ensure that the grinding chamber 101 is in a closed state. Subsequently, the drive device 112 is started, and the drive shaft drives the cutter disc 104 to rotate. During this process, the guide portion 105 forms a negative pressure zone near the cutter disc under the high-speed rotation of the cutter disc 104, prompting the material to pass through the material channel surrounded by the guide plate 1056 and flow from the area near the feed port to the area near the cutter disc.

[0040] After the material enters the area near the cutter disc, the centrifugal force generated by the rotation of the cutter disc 104 causes the material to move radially toward the edge. The needle-shaped columns 1041 on the edge of the cutter disc 104 rotate with the cutter disc to crush the graphite. At the same time, the rotation of the cutter disc causes a positive pressure zone to form in the area near the cutter disc near the peripheral wall 110, while a negative pressure zone to form in the area near the feed port near the peripheral wall 110. Therefore, under the action of the airflow, the crushed graphite flows from the positive pressure zone to the negative pressure zone, that is, the material passes through the hollow portion 1055 from the area near the cutter disc to enter the area near the feed port again. This cyclic process causes the material to be continuously crushed and shaped by the cutter disc 104 in the area near the feed port and the area near the cutter disc, effectively reducing the specific surface area of ​​spherical graphite and effectively improving the crushing and shaping efficiency of the graphite particles.

[0041] It will be appreciated by those skilled in the art that, in order to better crush the material, multiple circles of needle-shaped columns 1041 can be provided at the edge of the cutter disc body. In order to increase the versatility of the graphite shaping machine 100, the diameter of the needle-shaped columns 1041 on the cutter disc 104 can be adjusted as needed to accommodate graphites of different sizes. For example, for larger graphite, thicker needle-shaped columns 1041 are required to provide sufficient grinding force, while for smaller graphite, thinner needle-shaped columns 1041 are required to avoid over-grinding. In addition, in order to further increase the versatility of the graphite shaping machine 100, the spacing between the needle-shaped columns 1041 can be adjusted as needed to accommodate graphites of different sizes. For example, for larger graphite, a relatively large gap is required to allow the graphite to pass smoothly, while for smaller graphite, a relatively small gap is required to provide a finer grinding effect.

[0042] In the solution of the present application, by adjusting the number, diameter, and spacing of the needle-shaped columns 1041, the graphite shaping machine 100 can be adapted to graphite materials of different particle sizes. This also means that the same graphite shaping machine 100 can be used to process a variety of graphite products, from coarse particles to fine particles, increasing the versatility of the graphite shaping machine 100.

[0043] like Figure 2As shown in the front view of the middle guide portion, in a specific embodiment, the guide member 1051 includes two annular members, namely a first annular member 1052 and a second annular member 1053, which are arranged coaxially. The inner circumferential wall of the first annular member 1052 and the outer circumferential wall of the second annular member 1053 are connected by at least two connecting ribs 1054, and the area between the two adjacent connecting ribs 1054 is a hollow portion 1055 for material flow. Specifically, the outer circumferential wall of the first annular member 1052 abuts the inner circumferential wall of the grinding chamber 101, and the guide plate 1056 is connected to the second annular member 1053. More specifically, the first annular member 1052 has a certain thickness, where the thickness direction refers to the direction extending from the front side wall 108 and the rear side wall 109. The second annular member 1053 has a certain width, where the width direction refers to the radial direction of the circular through hole in the center of the guide member 1051.

[0044] In one embodiment, in order to better connect the two annular members together through connecting ribs, a connecting portion extending toward the front side wall is provided at the outer periphery of the second annular member 1053, one end of the connecting rib 1054 is connected to the connecting portion, and the other end is connected to the inner circumferential wall of the first annular member 1052.

[0045] In the above solution, the guide portion 105 is designed to ensure smooth material flow from the feed inlet 102 to the cutter disc 104, reducing resistance near the cutter disc. The angle between the guide vane 1056 and the second annular member 1053 is set between 130 and 140 degrees. This angle also helps reduce material rebound, ensuring smooth material entry into the grinding chamber 101 near the cutter disc, minimizing material loss and equipment wear.

[0046] Those skilled in the art will appreciate that the angle between the guide plate 1056 and the second annular member 1053 can be set to any value within the range of 130 to 140 degrees depending on the height of the graphite shaping machine 100. For example, in one specific embodiment, the angle between the guide plate 1056 and the second annular member 1053 is set to 45 degrees.

[0047] In another specific embodiment, the guide member 1051 is an annular structure with a guide plate 1056 connected in the middle, and the peripheral area has a plurality of spaced serrated structures. The side of the serrated structure away from the center of the guide member 1051 is abutted and fixed to the inner wall of the grinding chamber 101, and the area between the serrated structures constitutes a hollow portion 1055 for the material to pass through.

[0048] In the solution of the present application, the center of the feed port 102, the center of the guide portion 105 and the center of the cutter head 104 are collinearly arranged. This arrangement makes the material flow path more intuitive and facilitates the operator to perform daily maintenance and cleaning of the equipment.

[0049] like Figure 5 Side view of the middle and rear side walls and the peripheral wall Figure 6 As shown in the front view of the middle front sidewall, in one specific embodiment, the housing is a cylindrical structure comprising a groove structure and a front sidewall 108. The groove structure is surrounded by a rear sidewall 109 and a peripheral wall 110 disposed opposite the front sidewall 108. In this embodiment, both the front sidewall 108 and the rear sidewall 109 are circular, and the cross-section of the inner peripheral wall 110 of the housing is also circular. The edge of the front sidewall 108 has a plurality of assembly holes 114 spaced apart. The peripheral wall 110 of the groove structure has fixing holes 111 corresponding to the assembly holes 114. During assembly, fixing parts pass through the assembly holes 114 and fixing holes 111 in sequence to secure the front sidewall to the groove structure.

[0050] like Figure 1 and Figure 4 As shown, a gear ring 106 is provided in the grinding chamber 101 of the graphite shaping machine 100 in this embodiment. The gear ring 106 is an annular member with a certain width. The outer surface of the annular member is fixedly abutted against the inner circumferential wall 110 of the cylindrical grinding chamber 101, and the inner surface has a plurality of spaced protrusions 1061.

[0051] During use, the graphite in the area near the cutter disc will continuously collide with the needle-shaped column 1041 and the inner surface of the gear ring 106 as the cutter disc 104 rotates. Since the inner surface of the gear ring 106 has spaced-apart bumps 1061, the bumps 1061 will further crush the graphite, thereby further improving the sphericity of the spherical graphite and reducing the specific surface area of ​​the spherical graphite.

[0052] It is worth noting that the width direction in the above solution refers to the extension direction of the center of the feed port 102 and the center of the guide portion 105 , that is, the thickness direction of the graphite shaping machine 100 .

[0053] Those skilled in the art will appreciate that the height of the gear ring 106 and the number of bumps on the gear ring can be adjusted according to the different particle sizes of the graphite.

[0054] In the present application, the width of the ring gear 106 is no less than the width of the cutter disc 104, where the width of the cutter disc 104 refers to the sum of the thickness of the circular cutter disc body and the extended length of the needle-shaped pillars 1041 provided on the cutter disc body. The width of the projection onto the peripheral wall 110 of the grinding chamber 101 is the width of the projection. This ensures that when graphite moves from the center of the cutter disc 104 to the peripheral wall 110 of the grinding chamber 101 under the action of centrifugal force, it can fall onto the inner surface of the ring gear 106. The bumps 1061 on the inner surface can further crush the graphite, thereby improving the graphite crushing efficiency.

[0055] In a specific embodiment, the width of the ring gear 106 is greater than the width of the projection of the cutter disc 104 on the peripheral wall 110 of the grinding chamber 101, and one end of the ring gear 106 abuts against the inner surface of the rear side wall 109 of the shell, and the other end abuts against the first annular member 1052, so that the ring gear 106 is completely located in the area near the cutter disc while reserving sufficient space for movement for the cutter disc 104.

[0056] In the solution of the present application, in order to allow the material to flow more smoothly from the area near the cutter disc to the area near the feed inlet, the thickness of the gear ring 106 is set to be greater than or equal to the thickness of the first annular member 1052.

[0057] In the solution of the present application, a funnel 107 is connected to the feed port 102, and the material flows into the grinding chamber 101 through the funnel 107 for grinding. In addition, in order to ensure the consistency of the particle size of the material entering the grinding chamber 101 and improve the grinding effect, the material can be first classified. That is, before the material enters the graphite shaping machine, it is first classified by a classifier (not shown in the figure). After classification, material with consistent particle size can be obtained. The obtained material is then placed in the funnel 107 and enters the grinding chamber through the funnel for grinding.

[0058] like Figure 7 As shown in the schematic diagram of the peripheral wall of the housing, in the solution of the present application, the discharge port 103 is located on the peripheral wall 110 of the housing, and a cylinder material collecting device 113 for collecting the ground spherical graphite is provided at the discharge port 103. In the present application, since the cylinder material collecting device 113 is connected to the discharge port 103, the material collecting port can be opened or closed accurately at the appropriate time through the precise control of the cylinder, ensuring the accurate collection of the material and avoiding the loss of the material.

[0059] The graphite shaping machine 100 provided in this embodiment can directly produce spherical graphite without the need for drying or other operations. Compared with the spherical graphite produced by the stirred mill used in the background art, this device significantly improves production efficiency. In addition, because the graphite shaping machine in this embodiment is provided with a guide portion 105 in the grinding chamber 101, the material in the middle area and the material in the peripheral area flow into each other and receive the same number and intensity of impacts, thereby achieving the required particle size and reducing the specific surface area of ​​the spherical graphite.

[0060] Although multiple embodiments of the present application have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art can conceive of many changes, modifications, and alternatives without departing from the thought and spirit of the present application. It should be understood that in the process of practicing the present application, various alternatives to the embodiments of the present application described herein can be adopted. The accompanying claims are intended to define the scope of protection of the present application and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. A graphite shaping machine, comprising a driving device and a grinding chamber (101) surrounded by a shell, wherein the shell has a feed port (102) and a discharge port (103) communicating with the outside, characterized in that: Also includes: a cutter disc (104) disposed in the grinding chamber (101) and connected to the driving device, the cutter disc (104) having at least one circle of needle-shaped columns (1041) spaced apart along its circumference at its edge, and the needle-shaped columns (1041) extending toward the front side wall (108) where the feed port (102) is located; and A flow guide portion (105) is provided between the feed port (102) and the cutter disc (104); a channel for material flow is provided in the middle of the flow guide portion (105); and a hollow portion (1055) is provided in an outer peripheral area of ​​the flow guide portion (105) away from the channel.

2. The graphite shaping machine according to claim 1, characterized in that The flow guide portion (105) comprises a flow guide member (1051) and a flow guide plate (1056); The flow guide (1051) comprises a plate-like structure with a certain thickness, a circular through hole is provided in the middle of the plate-like structure, and the hollow portions (1055) are distributed at intervals along the outer circumference of the plate-like structure. The guide plate (1056) is a hollow truncated cone-shaped structure, the large diameter end of the truncated cone-shaped structure is connected to the edge of the circular through hole on the plate-shaped structure, and the small diameter end of the truncated cone-shaped structure is extended in the direction of the cutter disc (104).

3. The graphite shaping machine according to claim 2, characterized in that: The flow guide (1051) comprises a first annular member (1052) and a second annular member (1053) arranged coaxially, the inner peripheral wall of the first annular member (1052) and the outer peripheral wall of the second annular member (1053) being connected via at least two connecting ribs (1054); the hollow portion (1055) is the area between two adjacent connecting ribs (1054); The outer peripheral wall of the first annular member (1052) abuts against the inner peripheral wall of the grinding chamber (101), and the guide plate (1056) is connected to the second annular member (1053).

4. The graphite shaping machine according to any one of claims 1 to 3, characterized in that: The center of the feed port (102), the center of the guide portion (105), and the center of the cutter disc (104) are arranged collinearly.

5. The graphite shaping machine according to claim 4, characterized in that: The graphite shaping machine also includes: The gear ring (106) is an annular member with a certain width, the outer surface of which is fixedly abutted against the cylindrical grinding chamber (101), and the inner surface of which has a plurality of protrusions (1061) arranged at intervals.

6. The graphite shaping machine according to claim 5, characterized in that: The width of the gear ring (106) is not less than the width of the cutter disc (104).

7. The graphite shaping machine according to claim 6, characterized in that: One end of the gear ring (106) abuts against the inner surface of the rear side wall (109) of the shell, and the other end abuts against the first annular member (1052), and the thickness of the gear ring (106) is not less than the thickness of the first annular member (1052).

8. The graphite shaping machine according to claim 3, characterized in that: The included angle between the guide plate (1056) and the second annular member (1053) is 130 degrees to 140 degrees.

9. The graphite shaping machine according to claim 1, characterized in that: The feed port (102) is connected to a funnel (107), and the material flows into the grinding chamber (101) through the funnel (107).

10. The graphite shaping machine according to claim 1, characterized in that: The shell is a cylindrical structure, comprising a front side wall (108) and a rear side wall (109) arranged opposite to each other, and a peripheral wall (110) connected to the front side wall (108) and the rear side wall (109) at both ends. The discharge port (103) is located on the peripheral wall (110) of the shell.

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