Grinding equipment and grinding method for metal powder

Abstract

The invention relates to the technical field of grinding equipment, and discloses metal powder grinding equipment and a grinding method.The metal powder grinding equipment comprises a bearing mechanism which comprises a bearing frame, a grinding box shell fixedly installed at the top of the bearing frame, a feeding hopper fixedly installed at the top of the grinding box shell and a grinding assembly arranged at the top of the bearing frame; heat can be sucked and removed together through suction force generated by a vacuum suction machine in the control mechanism, the temperature in a cavity of the grinding barrel is reduced, the situation that oxidation of metal powder is aggravated or phase change occurs due to temperature rising can be effectively reduced, and therefore the purity and original physicochemical properties of the metal powder are guaranteed, and the service life of the metal powder is prolonged. And when the metal powder is continuously sucked, the gradually accumulated metal powder can trigger a valve switch to open a valve once, so that the metal powder can be automatically supplemented when the metal powder becomes small due to grinding, and the stability during grinding is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding equipment, and in particular to a grinding equipment and a grinding method for metal powder. Background Art

[0002] In recent years, with the continuous development of modern industry, the demand for metal powder has put forward higher requirements in terms of quality, precision and output. From the early simple and rough grinding tools to today's highly automated and precise equipment, this development process is accompanied by the continuous evolution of materials science, mechanical manufacturing technology and industrial production needs. Driven by the strict requirements of many industries such as metallurgy, aerospace, and electronics on the characteristics of metal powder, metal powder grinding equipment continues to develop and innovate to adapt to the diversified production needs of different metal materials, different particle size requirements, etc.

[0003] Currently, in the process of metal powder grinding, the friction between the grinding medium and the metal powder and the conversion of mechanical energy into heat energy will cause the temperature in the grinding chamber to rise. This temperature increase may change the physical and chemical properties of the metal powder, such as causing the oxidation of certain metal powders to intensify or phase change, thus causing serious impact on the quality of the metal powder; and in the grinding process, there is a lack of automated operation for the replenishment and screening of the grinding medium. When the grinding medium becomes smaller or broken due to wear, it cannot be automatically replenished and screened, which will affect the stability of the grinding effect. Summary of the invention

[0004] In view of the problem that the above-mentioned existing grinding equipment cannot directly collect and replenish metal powder during grinding, the present invention is proposed.

[0005] Therefore, an object of the present invention is to provide a metal powder grinding device.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: including a bearing mechanism, including a bearing frame, a grinding box shell fixedly mounted on the top of the bearing frame, a feed hopper fixedly mounted on the top of the grinding box shell, and a grinding assembly arranged on the top of the bearing frame; a control mechanism, including a collecting box fixedly mounted on the outside of the grinding box shell, a partition hinged on the inner wall of the collecting box, a ventilation filter port opened on the outer surface of the partition, a filter inclined plate hinged on the top of the partition, a vacuum suction machine fixedly mounted on the bottom of the collecting box, and a flexible positioning plate fixedly mounted on the top of the filter inclined plate.

[0007] As a preferred solution of the metal powder grinding equipment described in the present invention, the control mechanism also includes a limit seat fixedly installed on the top of the partition, a ball mounted on the top of the limit seat, a connecting rod fixedly installed on the outer surface of the ball, a contact block fixedly installed on the end of the connecting rod, a bracket fixedly installed on the outside of the grinding box shell, a valve switch fixedly installed on the top of the bracket, a connecting pipe fixedly installed on the outside of the collecting box, and a supporting buffer plate fixedly installed on the inner wall of the collecting box and located at the bottom of the partition.

[0008] As a preferred solution of the metal powder grinding equipment of the present invention, the top of the flexible positioning plate is fixedly installed on the inner wall of the collection box, and the other end of the connecting pipe is fixedly connected to the outer surface of the grinding box shell and is connected to each other.

[0009] As a preferred solution of the metal powder grinding equipment described in the present invention, the grinding assembly includes a driving motor fixedly mounted on the top of the carrier, a coupling fixedly mounted on the end of the driving motor, a shaft fixedly mounted on the end of the coupling, a bearing fixedly mounted on the end of the shaft, a turntable fixedly mounted on the outside of the bearing, a plurality of grinding parts arranged on the outer surface of the turntable, and a grinding cylinder fixedly mounted in the inner cavity of the grinding box shell.

[0010] As a preferred solution of the metal powder grinding equipment described in the present invention, the grinding part includes a rectangular block fixedly mounted on the outer surface of the turntable, a groove opened on the outside of the rectangular block, a plurality of return springs fixedly mounted in the inner cavity of the groove, and a connecting plate fixedly mounted on the end of the return spring.

[0011] As a preferred solution of the metal powder grinding equipment described in the present invention, the grinding part also includes a limit bar fixedly installed on the outer surface of the connecting plate, a grinding block fixedly installed on the outer surface of the limit bar, and a limit block fixedly installed on the inner wall of the groove.

[0012] As a preferred solution of the metal powder grinding equipment of the present invention, the opening where the connecting rod passes through the collection box is designed with a nano-level sealing process, and a sealed side door is provided on the outside of the collection box.

[0013] As a preferred solution of the metal powder grinding equipment of the present invention, an opening is arranged on the outer side of the grinding box shell, and the bottom of the feed hopper extends to the opening and is interconnected.

[0014] As a preferred solution of the metal powder grinding equipment described in the present invention, the bearing mechanism also includes a support frame fixedly installed on the top of the grinding box shell, a rotating shaft seat fixedly installed on the outside of the feed hopper, and a cover plate hinged on the outside of the rotating shaft seat.

[0015] The invention also provides a grinding method.

[0016] The present invention provides the following technical solution: a grinding method, comprising the above-mentioned metal powder grinding equipment, the method comprising the following steps:

[0017] S1: prepare the metal material to be ground, ensure that the cover of the feed hopper is in an open state, and the bottom of the feed hopper is normally connected to the opening of the grinding box shell, and pour the metal material into the grinding box shell through the feed hopper;

[0018] S2: Start the driving motor in the grinding assembly to make the turntable rotate steadily, the grinding parts grind the metal material, and perform extrusion and friction grinding operations on the metal material in the grinding cylinder;

[0019] S3: The vacuum suction machine uses the negative pressure generated by the vacuum pump to absorb the metal powder. It can suck the light metal powder after grinding into the collection box, and at the same time can quickly absorb the heat generated in the grinding cylinder. The metal powder is isolated into the collection box through the partition and the filter inclined plate for further collection and processing;

[0020] S4: When the metal material is ground to the expected fineness or the grinding time reaches the set value, the driving motor is stopped, the grinding process ends, the sealed side door of the collection box is opened, and the metal powder accumulated in the collection box is taken out.

[0021] The beneficial effects of the present invention are as follows: the suction force generated by the vacuum suction machine in the control mechanism can absorb the heat together, thereby reducing the temperature in the grinding cylinder cavity, which can effectively reduce the intensified oxidation or phase change of the metal powder caused by the increase in temperature, thereby ensuring the purity and original physical and chemical properties of the metal powder. When the metal powder is continuously sucked in, the gradually accumulated metal powder will trigger the valve switch to open once, so that when the metal powder becomes smaller due to grinding, it can be automatically replenished, thereby ensuring stability during grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the structure of the grinding assembly of the present invention.

[0025] Figure 3 It is a partial cross-sectional view of the grinding box shell structure of the present invention.

[0026] Figure 4 It is a schematic diagram of the control mechanism structure of the present invention.

[0027] Figure 5 It is a cross-sectional view of the collection box structure of the present invention.

[0028] Figure 6 It is a partial cross-sectional view of the grinding piece structure of the present invention.

[0029] In the figure: 100, bearing mechanism; 101, bearing frame; 102, grinding box shell; 103, feed hopper; 104, grinding assembly; 104a, driving motor; 104b, coupling; 104c, shaft; 104d, bearing; 104e, turntable; 104f, grinding piece; 104f-1, rectangular block; 104f-2, groove; 104f-3, return spring; 104f-4, connecting plate; 104f-5, limit strip; 104f-6, grinding block; 104 f-7, limit block; 104g, grinding cylinder; 105, support frame; 106, shaft seat; 107, cover plate; 200, control mechanism; 201, collection box; 202, partition; 203, ventilation filter port; 204, filter ramp; 205, vacuum suction machine; 206, flexible positioning sheet; 207, limit seat; 208, ball bearing; 209, connecting rod; 210, contact block; 211, bracket; 212, valve switch; 213, connecting pipe; 214, support buffer plate. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0033] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0034] Example 1

[0035] Reference Figure 1-6 , as a first embodiment of the present invention, provides a metal powder grinding device, the device comprising:

[0036] The carrying mechanism 100 includes a carrying frame 101, a grinding box shell 102 fixedly mounted on the top of the carrying frame 101, a feed hopper 103 fixedly mounted on the top of the grinding box shell 102, and a grinding assembly 104 disposed on the top of the carrying frame 101;

[0037] The control mechanism 200 includes a collecting box 201 fixedly mounted on the outside of the grinding box shell 102, a partition 202 hinged on the inner wall of the collecting box 201, a ventilation filter port 203 opened on the outer surface of the partition 202, a filter ramp 204 hinged on the top of the partition 202, a vacuum suction machine 205 fixedly mounted on the bottom of the collecting box 201, and a flexible positioning sheet 206 fixedly mounted on the top of the filter ramp 204.

[0038] Among them, the connecting pipe 213 in the control mechanism 200 connects the grinding box shell 102 with the collecting box 201, and a ventilation filter port 203 is provided on the partition 202. During the grinding process, the heat generated by friction in the grinding chamber will cause the air to expand, and the hot air can enter the collecting box 201 through the connecting pipe 213, and an air circulation channel is formed through the vacuum suction machine 205, which helps to take away the heat in the grinding cylinder 104g cavity, thereby reducing the temperature in the grinding cylinder 104g cavity.

[0039] Specifically, the control mechanism 200 also includes a limit seat 207 fixedly installed on the top of the partition 202, a ball 208 adapted to be installed on the top of the limit seat 207, a connecting rod 209 fixedly installed on the outer surface of the ball 208, a contact block 210 fixedly installed at the end of the connecting rod 209, a bracket 211 fixedly installed on the outside of the grinding box shell 102, a valve switch 212 fixedly installed on the top of the bracket 211, a connecting pipe 213 fixedly installed on the outside of the collecting box 201, and a supporting buffer plate 214 fixedly installed on the inner wall of the collecting box 201 and located at the bottom of the partition 202. The top of the flexible positioning sheet 206 is fixedly installed on the inner wall of the collecting box 201, and the other end of the connecting pipe 213 is fixedly connected to the outer surface of the grinding box shell 102, and is connected to each other.

[0040] Among them, when the vacuum suction machine 205 uses the negative pressure generated by the vacuum pump to absorb metal powder, the metal powder that has become lighter after being ground finer will be sucked into the collection box 201. The filter inclined plate 204 is made of a ceramic filter membrane, and when the metal powder is continuously sucked, it will accumulate on the top of the partition 202 to generate weight to press the partition 202 down to an angle of higher on the left and lower on the right, thereby causing the connecting rod 209 to move vertically downward through the ball 208, so that the contact block 210 directly contacts the valve switch 212, triggering the valve switch 212 to open once, and when opened, it can transport part of the metal powder in the feed hopper 103 to the grinding box shell 102, so that when the metal powder becomes smaller due to grinding, it can be automatically replenished.

[0041] Furthermore, the grinding assembly 104 includes a driving motor 104a fixedly mounted on the top of the carrier 101, a coupling 104b fixedly mounted on the end of the driving motor 104a, a shaft 104c fixedly mounted on the end of the coupling 104b, a bearing 104d fixedly mounted on the end of the shaft 104c, a turntable 104e fixedly mounted on the outside of the bearing 104d, a plurality of grinding members 104f arranged on the outer surface of the turntable 104e, and a grinding cylinder 104g fixedly mounted in the inner cavity of the grinding box shell 102.

[0042] The driving motor 104a drives the shaft 104c to rotate through the coupling 104b, and the bearing 104d at the end of the shaft 104c enables the turntable 104e to rotate stably. The grinding element 104f on the outer surface of the turntable 104e performs grinding operations such as extrusion and friction on the metal material in the grinding cylinder 104g.

[0043] It should be noted that the pore size of the ceramic filter membrane is at the millimeter level, and air can pass through relatively smoothly. The following are various parameters of the filter inclined plate 204 when ensuring the normal operation of the vacuum suction machine 205, ensuring that the vacuum suction machine 205 can normally generate negative pressure thereunder to perform suction operation;

[0044]

[0045] When in use, the material is poured into the grinding box shell 102 through the feed hopper 103, the drive motor 104a in the grinding assembly 104 is started to make the turntable 104e rotate stably, the grinding part 104f grinds the metal material, and the metal material is subjected to grinding operations such as extrusion and friction in the grinding cylinder 104g. The vacuum suction machine 205 uses the negative pressure generated by the vacuum pump to absorb the metal powder, and can suck the light metal powder after grinding into the collection box 201, and at the same time can quickly absorb the heat generated in the grinding cylinder 104g, and isolate the metal powder into the collection box 201 through the partition 202 and the filter inclined plate 204 for further collection and processing.

[0046] In summary, the vacuum suction machine 205 in the control mechanism 200 uses the negative pressure generated by the vacuum pump to absorb metal powder, and the suction force generated can absorb heat together. By lowering the temperature in the cavity of the grinding cylinder 104g, the oxidation of the metal powder or the phase change caused by the increase in temperature can be effectively reduced, thereby ensuring the purity and original physical and chemical properties of the metal powder. The stable grinding temperature helps to ensure that the quality indicators such as the particle size distribution of the metal powder meet the requirements, thereby improving the quality of the final metal powder product.

[0047] Example 2

[0048] Reference Figure 1 , Figure 3 and Figure 6 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that it provides a grinding effect with an adaptive grinding range.

[0049] Furthermore, the grinding piece 104f includes a rectangular block 104f-1 fixedly mounted on the outer surface of the turntable 104e, a groove 104f-2 opened on the outer side of the rectangular block 104f-1, a plurality of return springs 104f-3 fixedly mounted in the inner cavity of the groove 104f-2, and a connecting plate 104f-4 fixedly mounted on the end of the return spring 104f-3. The grinding piece 104f also includes a limit strip 104f-5 fixedly mounted on the outer surface of the connecting plate 104f-4, a grinding block 104f-6 fixedly mounted on the outer surface of the limit strip 104f-5, and a limit block 104f-7 fixedly mounted on the inner wall of the groove 104f-2.

[0050] Among them, in the initial stage of grinding, there are some larger blocks of metal raw materials, and the grinding block 104f-6 is subjected to a larger reaction force. The return spring 104f-3 will be compressed, so that the grinding block 104f-6 can retreat within a certain range to avoid damage to the grinding piece 104f or the drive motor 104a and other components due to sudden excessive resistance; as the grinding proceeds, when the metal powder is gradually ground, the resistance to the grinding block 104f-6 decreases, and the return spring 104f-3 will gradually return to its original state, pushing the grinding block 104f-6 forward and maintaining a certain grinding pressure.

[0051] Furthermore, the opening of the connecting rod 209 that passes through the collecting box 201 adopts a nano-level sealing technology design, a sealed side door is provided on the outside of the collecting box 201, an opening is provided on the outside of the grinding box shell 102, the bottom of the feed hopper 103 extends to the opening, and the supporting mechanism 100 also includes a support frame 105 fixedly installed on the top of the grinding box shell 102, a rotating shaft seat 106 fixedly installed on the outside of the feed hopper 103, and a cover plate 107 hinged on the outside of the rotating shaft seat 106.

[0052] The cover plate 107 is directly used to effectively shield the opening of the feed hopper 103 to prevent metal powder from being dispersed into the air during the grinding process. The sealed side door can be opened after the grinding is completed to directly collect the metal powder in the collection box 201.

[0053] During use, when the grinding block 104f-6 encounters larger particles of metal powder or encounters greater resistance during the grinding process, it will be compressed due to the elastic characteristics of the return spring 104f-3, and the limit strip 104f-5 and the limit block 104f-7 jointly limit the displacement range of the grinding block 104f-6. The displacement of the grinding block 104f-6 is always within a reasonable range, thereby ensuring the stability of the grinding.

[0054] In summary, the grinding element 104f realizes dynamic adjustment of the grinding force according to the grinding state of the metal powder, thereby adapting to the grinding of metal powders of different particle sizes and expanding the effective range of grinding.

[0055] Example 3

[0056] Reference Figure 1-6 , which is the third embodiment of the present invention, is different from the previous embodiment in that this embodiment provides a grinding method, including a metal powder grinding device, and the method includes the following steps:

[0057] S1: Prepare the metal material to be ground, ensure that the cover plate 107 of the feed hopper 103 is in an open state, and the bottom of the feed hopper 103 is normally connected to the opening of the grinding box shell 102, and pour the metal material into the grinding box shell 102 through the feed hopper 103;

[0058] S2: The driving motor 104a in the grinding assembly 104 is started to make the rotating disk 104e rotate stably, and the grinding member 104f grinds the metal material, and the metal material is subjected to grinding operations such as extrusion and friction in the grinding cylinder 104g;

[0059] S3: The vacuum suction machine 205 uses the negative pressure generated by the vacuum pump to absorb the metal powder, and can absorb the light metal powder after grinding into the collection box 201, and at the same time can quickly absorb the heat generated in the grinding cylinder 104g, and isolate the metal powder into the collection box 201 through the partition plate 202 and the filter inclined plate 204 for further collection and processing;

[0060] S4: When the metal material is ground to the desired fineness or the grinding time reaches the set value, the driving motor 104a is stopped, the grinding process ends, the sealed side door of the collection box 201 is opened, and the metal powder accumulated in the collection box 201 is taken out.

[0061] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0062] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0063] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A metal powder grinding device, characterized in that: include, A bearing mechanism (100) comprises a bearing frame (101), a grinding box shell (102) fixedly mounted on the top of the bearing frame (101), a feed hopper (103) fixedly mounted on the top of the grinding box shell (102), and a grinding assembly (104) arranged on the top of the bearing frame (101); The control mechanism (200) comprises a collection box (201) fixedly mounted on the outside of the grinding box shell (102), a partition (202) hingedly mounted on the inner wall of the collection box (201), a ventilation filter port (203) provided on the outer surface of the partition (202), a filter ramp (204) hingedly mounted on the top of the partition (202), a vacuum suction machine (205) fixedly mounted on the bottom of the collection box (201), and a flexible positioning sheet (206) fixedly mounted on the top of the filter ramp (204).

2. The metal powder grinding device according to claim 1, characterized in that: The control mechanism (200) also includes a limit seat (207) fixedly mounted on the top of the partition (202), a ball (208) adapted to be mounted on the top of the limit seat (207), a connecting rod (209) fixedly mounted on the outer surface of the ball (208), a contact block (210) fixedly mounted on the end of the connecting rod (209), a bracket (211) fixedly mounted on the outside of the grinding box shell (102), a valve switch (212) fixedly mounted on the top of the bracket (211), a connecting pipe (213) fixedly mounted on the outside of the collection box (201), and a support buffer plate (214) fixedly mounted on the inner wall of the collection box (201) and located at the bottom of the partition (202).

3. The metal powder grinding device according to claim 2, characterized in that: The top of the flexible positioning sheet (206) is fixedly mounted on the inner wall of the collecting box (201), and the other end of the connecting pipe (213) is fixedly connected to the outer surface of the grinding box shell (102), and the two are connected to each other.

4. The metal powder grinding device according to claim 3, characterized in that: The grinding assembly (104) comprises a driving motor (104a) fixedly mounted on the top of the carrier (101), a coupling (104b) fixedly mounted on the end of the driving motor (104a), a shaft (104c) fixedly mounted on the end of the coupling (104b), a bearing (104d) fixedly mounted on the end of the shaft (104c), a turntable (104e) fixedly mounted on the outside of the bearing (104d), a plurality of grinding elements (104f) arranged on the outer surface of the turntable (104e), and a grinding cylinder (104g) fixedly mounted in the inner cavity of the grinding box shell (102).

5. The metal powder grinding device according to claim 4, characterized in that: The grinding member (104f) comprises a rectangular block (104f-1) fixedly mounted on the outer surface of the rotating disk (104e), a groove (104f-2) opened on the outer side of the rectangular block (104f-1), a plurality of return springs (104f-3) fixedly mounted in the inner cavity of the groove (104f-2), and a connecting plate (104f-4) fixedly mounted on the end of the return spring (104f-3).

6. The metal powder grinding device according to claim 5, characterized in that: The grinding piece (104f) also includes a limit strip (104f-5) fixedly mounted on the outer surface of the connecting plate (104f-4), a grinding block (104f-6) fixedly mounted on the outer surface of the limit strip (104f-5), and a limit block (104f-7) fixedly mounted on the inner wall of the groove (104f-2).

7. The metal powder grinding device according to claim 6, characterized in that: The opening where the connecting rod (209) passes through the collection box (201) is designed using a nano-level sealing process, and a sealed side door is provided on the outside of the collection box (201).

8. The metal powder grinding device according to claim 7, characterized in that: An opening is provided on the outer side of the grinding box shell (102), and the bottom of the feed hopper (103) extends to the opening and is interconnected.

9. The metal powder grinding device according to claim 8, characterized in that: The bearing mechanism (100) further comprises a support frame (105) fixedly mounted on the top of the grinding box shell (102), a rotating shaft seat (106) fixedly mounted on the outside of the feed hopper (103), and a cover plate (107) hinged on the outside of the rotating shaft seat (106).

10. A grinding method, characterized in that: A grinding device comprising the metal powder according to any one of claims 1 to 9, wherein the method comprises the following steps: S1: prepare the metal material to be ground, ensure that the cover plate (107) of the feed hopper (103) is in an open state, and the bottom of the feed hopper (103) is in normal communication with the opening of the grinding box shell (102), and pour the metal material into the grinding box shell (102) through the feed hopper (103); S2: starting the driving motor (104a) in the grinding assembly (104) to make the rotating disk (104e) rotate stably, the grinding element (104f) grinds the metal material, and the metal material is squeezed and frictionally ground in the grinding cylinder (104g); S3: The vacuum suction machine (205) uses the negative pressure generated by the vacuum pump to absorb the metal powder, and sucks the light metal powder after grinding into the collection box (201), and at the same time can quickly absorb the heat generated in the grinding cylinder (104g), and isolate the metal powder into the collection box (201) through the partition (202) and the filter inclined plate (204) for further collection and processing; S4: When the metal material is ground to a desired fineness or the grinding time reaches a set value, the driving motor (104a) is stopped, the grinding process ends, the sealed side door of the collection box (201) is opened, and the metal powder accumulated in the collection box (201) is taken out.

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