Grinding device

Abstract

The utility model provides a grinding device. The grinding device comprises a grinding support, a grinding cutter set, a powder scraping impeller, a powder outlet channel, a first plasma generator and a second plasma generator. The grinding support is provided with a grinding bin, the grinding cutter set and the powder scraping impeller are arranged in the grinding bin, the powder scraping impeller comprises a plurality of blades, the grinding cutter set is arranged above the powder scraping impeller, and the grinding bin is divided into an inner bin and an outer bin by the powder scraping impeller; the first plasma generator is arranged in the inner bin, and the second plasma generator is arranged in the outer bin or the powder outlet channel. According to the device, double static elimination is carried out on the interior and the exterior of the grinding bin, and the adsorption phenomenon and the powder flying phenomenon inside and outside the bin can be greatly reduced.

Description

Technical Field

[0001] The present application relates to the technical field of grinding devices, and in particular to a grinding device. Background Art

[0002] The grinding device can grind coffee beans or other beans into powder to provide materials for making corresponding beverages. During the grinding process, the grinding device and the material to be ground collide and rub against each other, and friction will occur between the material particles and between the particles and the inner wall of the grinder. These frictions will cause the accumulation of electric charges, thereby generating electrostatic forces. At this time, the material particles are easily adsorbed in places such as the grinding bin and the powder outlet channel under the action of electrostatic forces, and powder flying is prone to occur, which seriously affects the user experience. In order to solve this problem, the relevant technology sets a plasma generator on the powder outlet channel of the grinding device to reduce the static electricity on the material particles, thereby reducing adsorption and powder flying. However, adsorption still exists inside the grinding device, which needs to be improved urgently. Utility Model Content

[0003] The present application provides a grinding device, aiming to solve the problem of adsorption phenomenon still existing inside the existing grinding device.

[0004] The present application provides a grinding device, comprising a grinding bracket, a grinding knife group, a powder scraping impeller, a powder outlet channel, a first plasma generator and a second plasma generator;

[0005] The grinding bracket is provided with a grinding chamber, the grinding knife group and the powder scraping impeller are arranged in the grinding chamber, the powder scraping impeller includes a plurality of blades, wherein the grinding knife group is arranged above the powder scraping impeller, and the grinding chamber is divided into an inner chamber and an outer chamber by the powder scraping impeller;

[0006] The first plasma generator is arranged in the inner chamber, and the second plasma generator is arranged in the outer chamber or the powder outlet channel.

[0007] Preferably, the first plasma generator is protrudingly arranged at the bottom of the inner compartment, and each of the blades is provided with an avoidance opening. When the blades rotate, the blades pass through the first plasma generator through the avoidance opening.

[0008] Preferably, the first plasma generator is protrudingly disposed on the side wall of the inner compartment, and each of the blades is provided with an avoidance opening. When the blades rotate, the blades pass through the first plasma generator through the avoidance opening.

[0009] Preferably, the grinding knife set includes a first grinding part and a second grinding part; the first grinding part is arranged at the periphery of the second grinding part, and a gap is arranged between the first grinding part and the second grinding part.

[0010] Preferably, the gap has a structure that is wider at the top and narrower at the bottom.

[0011] Preferably, the grinding support is provided with a support frame and a support shaft; the first grinding part is fixed to the grinding support by being mounted on the support frame; the second grinding part is mounted on the support shaft.

[0012] Preferably, the powder scraping impeller further includes a blade support, and the blades are arranged on the periphery of the blade support; the powder scraping impeller is mounted on the support shaft through the blade support; the plurality of blades are arranged below the gap between the first grinding part and the second grinding part.

[0013] Preferably, the grinding support is provided with a communication port communicating with the grinding chamber, the communication port is connected to the powder outlet channel, and the communication port is located on the outer diameter of the rotation of the powder scraping impeller.

[0014] Preferably, the communication port protrudes from the grinding support, and the powder outlet channel is sleeved on the communication port.

[0015] Preferably, the grinding device further includes a power assembly, the power assembly includes a driving motor, and the driving motor is arranged on the grinding support; a toothed rod is arranged on the motor shaft of the driving motor, the toothed rod is meshed and connected with a double gear, and the double gear is meshed and connected with a shaft gear; the double gear is arranged on the grinding support; the shaft gear is arranged on the support shaft and is coaxially connected with the grinding cutter group and the powder scraping impeller.

[0016] In the grinding device proposed in the embodiment of the present application, a first plasma generator is arranged in the inner chamber of the grinding chamber, and a second plasma generator is arranged in the outer chamber or the powder outlet channel. The first plasma generator can eliminate the static electricity on the material particles in the inner chamber, thereby reducing the adsorption phenomenon of the material particles in the inner chamber. The second plasma generator can eliminate the static electricity on the material particles in the outer chamber or the powder outlet channel, thereby reducing the adsorption phenomenon of the material particles in the inner chamber and the powder flying phenomenon. By performing double static electricity elimination inside and outside the inner chamber of the grinding chamber, the adsorption phenomenon and the powder flying phenomenon inside and outside the chamber can be significantly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the grinding device proposed in the embodiment of the present application;

[0018] Figure 2 is one of the schematic structural diagrams of the first plasma generator proposed in the embodiment of the present application;

[0019] Figure 3 is another schematic structural diagram of the first plasma generator proposed in the embodiment of the present application;

[0020] Figure 4 Structural schematic diagram of the grinding tool set proposed in the embodiment of the present application;

[0021] Figure 5 Structural schematic diagram of the grinding bracket proposed in the embodiment of the present application;

[0022] Figure 6 Structural schematic diagram of the power component proposed in the embodiment of the present application.

[0023] Description of main component symbols

[0024] Grinding device 1

[0025] Grinding bracket 10

[0026] Grinding chamber 101

[0027] Inner chamber 1011

[0028] Outer chamber 1012

[0029] Support frame 102

[0030] Support shaft 103

[0031] Grinding tool set 20

[0032] First grinding part 201

[0033] Second grinding part 202

[0034] Powder scraping impeller 30

[0035] Blade 301

[0036] Avoidance opening 3011

[0037] Powder outlet channel 40

[0038] First plasma generator 50

[0039] Second plasma generator 60

[0040] Power component 70

[0041] Drive motor 701

[0042] Motor shaft 7011

[0043] Toothed rod 7012

[0044] Double gear 71

[0045] Shaft gear 72 Detailed implementation manners

[0046] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0047] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0048] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0049] A grinding device can grind coffee beans or other beans into powder to provide materials for making corresponding beverages. During the grinding process, the grinding device impacts and rubs against the material to be ground. Friction occurs between the material particles, between the particles and the inner wall of the grinder, and these frictions will cause the accumulation of electric charges, thereby generating electrostatic force. At this time, the material particles are prone to adsorb on places such as the grinding chamber and the powder outlet channel under the action of the electrostatic force, and there is also an easy occurrence of powder flying, seriously affecting the user experience. To solve this problem, in the related art, a plasma generator is provided on the powder outlet channel of the grinding device to reduce the static electricity on the material particles, thereby reducing the adsorption and powder flying phenomena. However, there is still an adsorption phenomenon inside the grinding device, which urgently needs to be improved.

[0050] In view of this, an embodiment of the present application provides a grinding device. A first plasma generator is arranged in the inner chamber of the grinding chamber, and a second plasma generator is arranged in the outer chamber or the powder outlet channel. The first plasma generator can eliminate the static electricity on the material particles in the inner chamber, thereby reducing the adsorption phenomenon of the material particles in the inner chamber. The second plasma generator can eliminate the static electricity on the material particles in the outer chamber or the powder outlet channel, thereby reducing the adsorption phenomenon of the material particles in the inner chamber and the powder flying phenomenon. By performing double static electricity elimination inside and outside the inner chamber of the grinding chamber, the adsorption phenomenon and the powder flying phenomenon inside and outside the chamber can be significantly reduced.

[0051] Please refer to Figure 1 , which is a schematic structural diagram of the grinding device 1 proposed by an embodiment of the present application. The grinding device 1 includes a grinding bracket 10, a grinding cutter group 20, a powder scraping impeller 30, a powder outlet channel 40, a first plasma generator 50, and a second plasma generator 60.

[0052] The grinding bracket 10 is provided with a grinding chamber 101. The grinding cutter group 20 and the powder scraping impeller 30 are arranged in the grinding chamber 101. The powder scraping impeller includes a plurality of blades 301. Among them, the grinding cutter group 20 is arranged above the powder scraping impeller 30, and the grinding chamber is divided into an inner chamber 1011 and an outer chamber 1012 by the powder scraping impeller. The first plasma generator 50 is arranged in the inner chamber 1011, and the second plasma generator 60 is arranged in the outer chamber 1012 or the powder outlet channel.

[0053] The grinding bracket 10 is used to support or accommodate the grinding chamber 101. In some embodiments, the grinding chamber 101 can be formed by a groove formed by the grinding bracket 10, with a simple structure and no need to add additional components. The grinding chamber 101 can be arranged above the grinding bracket 10, so that the powdered material after grinding directly falls to the powder scraping impeller under the action of gravity; and the bottom of the grinding chamber 101 is in a sealed state. For example, a sealing ring can be set to ensure this sealed state to prevent the ground powdered material from falling into the lower transmission mechanism, effectively ensuring the good operation of the transmission mechanism.

[0054] The grinding chamber 101 is used to accommodate the grinding cutter group 20 and the powder scraping impeller 30, as well as the material to be ground. The grinding cutter group 20 is used to grind the material to be ground, and the powder scraping impeller 30 is used to scrape the ground powdered material and convey it to a communication port arranged between the grinding bracket and the grinding chamber. The communication port is connected to the powder outlet channel and is used to output the powdered material to the powder outlet channel 40, and the powder outlet channel 40 is used to output the powdered material outside the grinding device 1.

[0055] The powder scraping impeller is arranged in the middle of the grinding chamber, and divides the grinding chamber into an inner chamber 1011 and an outer chamber 1012. The inner chamber 1011 is a relatively enclosed area formed by the powder scraping impeller and the inner wall of the grinding chamber. The outer chamber 1012 is connected to the powder outlet channel. After being ground, the powdery material will fall into the inner chamber 1011 and the outer chamber 1012, and the powdery material in the inner chamber 1011 can be conveyed to the outer chamber 1012 through the powder scraping impeller.

[0056] The plasma generator is used to eliminate the static electricity generated during the grinding process of the grinding device 1, so as to effectively avoid the accumulation of the ground powdery material in the grinding chamber 101 and the powder outlet channel 40 due to static electricity adsorption, thereby improving the problems of residual powder retention and flying powder.

[0057] Specifically, the plasma generator may include a generator main body and an electrode end. The generator main body is used to provide a high voltage for the electrode end to generate plasma. It can be understood that the generator main body is the core component of the plasma generator, and the generator main body includes all the circuits and control systems required to generate plasma to provide a high voltage suitable for generating plasma. In some embodiments, the generator main body may be arranged beside the grinding chamber 101 and can be fixed to the grinding bracket 10 by screws.

[0058] Specifically, the plasma released by the first plasma generator 50 and the second plasma generator 60 combines with the charged dust particles generated during the grinding process, thereby neutralizing the charges of the dust particles and reducing the mutual attraction between the dust particles, that is, eliminating the static electricity between the dust particles.

[0059] In some embodiments, the first plasma generator 50 can be fixed in the inner chamber 1011 of the grinding chamber by screws. Furthermore, when the powder ground by the grinding cutter group 20 falls into the inner chamber 1011, the plasma released by the first plasma generator 50 can neutralize the charges of the powder, eliminating the static electricity between the powder, thereby improving the situation where the powder accumulates in the inner chamber 1011 of the grinding chamber due to static electricity, reducing the residual powder retention in the inner chamber 1011 of the grinding chamber, and improving the adsorption phenomenon of the material.

[0060] In some embodiments, the second plasma generator 60 can be fixed in the outer chamber 1012 or the powder outlet channel by screws. Furthermore, when the powder is scraped to the communication port by the powder scraping impeller 30 and then falls from the communication port into the powder outlet channel 40, the plasma released by the second plasma generator 60 neutralizes the charges of the powder, eliminating the static electricity between the powder, thereby improving the situation where the powder accumulates in the outer chamber 1012 or the powder outlet channel 40 due to static electricity, reducing the residual powder retention in the powder outlet channel 40, and simultaneously improving the flying powder caused by static electricity.

[0061] The grinding device 1 proposed in the embodiment of the present application is provided with a first plasma generator 50 in the inner chamber 1011 of the grinding chamber, and a second plasma generator 60 is provided in the outer chamber 1012 or the powder outlet channel. The first plasma generator 50 can eliminate the static electricity on the material particles in the inner chamber 1011, thereby reducing the adsorption phenomenon of the material particles in the inner chamber 1011. The second plasma generator 60 can eliminate the static electricity on the material particles in the outer chamber 1012 or the powder outlet channel, thereby reducing the adsorption phenomenon and the powder flying phenomenon of the material particles in the inner chamber 1011. By performing double static electricity elimination outside the inner chamber 1011 of the grinding chamber, the adsorption phenomenon and the powder flying phenomenon inside and outside the chamber 1011 can be significantly reduced.

[0062] Please refer to Figure 2 , which is a schematic structural diagram of a first plasma generator 50 proposed in the embodiment of the present application.

[0063] In some embodiments, the first plasma generator 50 protrudes from the bottom of the inner chamber 1011, and an avoidance opening 3011 is provided on each blade 301. When the blade 301 rotates, the blade 301 passes through the first plasma generator 50 through the avoidance opening 3011.

[0064] The first plasma generator 50 can be fixed to the bottom of the inner chamber 1011 of the grinding chamber by screws or other fixing methods. Specifically, the generator body of the first plasma generator 50 is fixed outside the inner chamber 1011 of the grinding chamber, and the electrode end passes through the bottom of the grinding chamber and extends into the grinding chamber (that is, protrudes from the bottom of the inner chamber 1011) to release plasma inside the inner chamber 1011. At this time, to prevent the protruding electrode end from hindering the rotation of the blade 301, the avoidance opening 3011 is provided at the corresponding position of all the blades 301 in the embodiment of the present application, so that when the blade 301 rotates, the blade 301 can pass through the first plasma generator 50 through the avoidance opening 3011 without being hindered.

[0065] In the embodiment of the present application, since the first plasma generator 50 protrudes from the bottom of the inner chamber 1011 of the grinding chamber, the first plasma generator 50 can emit plasma in the inner chamber 1011, which can improve the material adsorption phenomenon in the inner chamber 1011.

[0066] Specifically, in some embodiments, the first positive electrode and the first negative electrode can be columnar structures protruding from one side of the first frame. The relative positions of the first positive electrode and the first negative electrode can be adjusted to ensure the formation of a stable and efficient plasma. Holes are respectively provided at the positions corresponding to the first positive electrode and the first negative electrode on the communication port, so that the first positive electrode and the first negative electrode can be inserted into the communication port through the holes.

[0067] Please refer to Figure 3, which is a schematic structural diagram of the first plasma generator 50 proposed in the embodiments of the present application.

[0068] In some embodiments, the first plasma generator 50 is prominently arranged on the side wall of the inner chamber 1011. An avoidance opening 3011 is formed on each blade 301. When the blade 301 rotates, the blade 301 passes through the first plasma generator 50 through the avoidance opening 3011.

[0069] The first plasma generator 50 can be fixed to the side wall of the inner chamber 1011 of the grinding chamber by screws or other fixing means. Specifically, the generator body of the first plasma generator 50 is fixed outside the inner chamber 1011 of the grinding chamber, and the electrode end passes through the side wall of the grinding chamber and extends into the interior of the grinding chamber (that is, prominently arranged on the side wall of the inner chamber 1011) to release plasma inside the inner chamber 1011. At this time, to prevent the protruding electrode end from obstructing the rotation of the blade 301, the avoidance opening 3011 is formed at the corresponding position of all the blades 301 in the embodiment of the present application, so that when the blade 301 rotates, the blade 301 can pass through the first plasma generator 50 through the avoidance opening 3011 without being obstructed.

[0070] In the embodiment of the present application, since the first plasma generator 50 is prominently arranged at the bottom of the inner chamber 1011 of the grinding chamber, the first plasma generator 50 can emit plasma in the inner chamber 1011, which can improve the material adsorption phenomenon in the inner chamber 1011.

[0071] Please refer to Figure 4 , which is a schematic structural diagram of the grinding knife set 20 proposed in the embodiments of the present application.

[0072] In some embodiments, the grinding knife set 20 includes a first grinding part 201 and a second grinding part 202. The first grinding part 201 is arranged on the periphery of the second grinding part 202, and a gap is arranged between the first grinding part 201 and the second grinding part 202. Among them, the gap between the first grinding part 201 and the second grinding part 202 is a structure with a wider upper part and a narrower lower part. The wider upper part is convenient for adding the material to be ground from above, and the narrower lower part makes the grinding more sufficient. In some embodiments, the first grinding part 201 and the second grinding part 202 can be grinding tools. The material to be ground can be placed in the gap between the first grinding part 201 and the second grinding part 202 for grinding. The ground powdery material can fall to the bottom of the grinding chamber 101 through this gap, and then be scraped and conveyed to the communication port by the powder scraping impeller 30.

[0073] Please refer to Figure 4 , which is a schematic structural diagram of the grinding bracket 10 proposed in the embodiments of the present application.

[0074] In some embodiments, the grinding bracket 10 is provided with a support frame 102 and a support shaft 103. The first grinding part 201 is fixed to the grinding bracket 10 by being mounted on the support frame 102, and the second grinding part 201 is fixed to the grinding bracket 10 by being mounted on the support shaft 103.

[0075] In some embodiments, the support shaft 103101 can be fixed to the inside of the grinding bracket 101 by screws, and the support frame 102 can be fixed above the grinding bracket by screws. The first grinding part 201 can be fixed to the support frame 102 by screws; the second grinding part 202 is rotatably mounted on the support shaft 103, and thus the second grinding part 202 can rotate around the support shaft 103. When the second grinding part 202 rotates, it forms a relative movement with the first grinding part 201, thereby grinding the material to be ground.

[0076] Please refer to Figure 5 as well. In some embodiments, the powder scraping impeller further includes a blade bracket. The blades 301 are arranged on the periphery of the blade bracket. The powder scraping impeller 30 is mounted on the support shaft 103 through the blade bracket, and the blades 301 are arranged below the gap between the first grinding part 201 and the second grinding part 202.

[0077] In some embodiments, the blade bracket is rotatably mounted on the support shaft 103, so that the powder scraping impeller 30 can rotate around the support shaft 103, thereby driving the blades 301 to rotate. The blades 301 drive the powdery material to rotate, thereby conveying the powdery material. In some embodiments, when the powder scraping impeller 30 rotates, the edge of the blade 301 can contact the inner wall of the grinding chamber 101 to scrape the powder adhering to the inner wall of the grinding chamber 101.

[0078] In some embodiments, the grinding bracket is provided with a communication port communicating with the grinding chamber. The communication port is connected to the powder outlet channel, and the communication port is located on the outer diameter of the rotation of the powder scraping impeller 30.

[0079] In some embodiments, when the powder scraping impeller 30 rotates, it drives the blades 301 to rotate to convey the powdery material to the communication port.

[0080] In some embodiments, the communication port protrudes from the grinding bracket 10, and the powder outlet channel 40 is sleeved on the communication port. In some embodiments, the powder outlet channel 40 can be a tubular structure, and the powder outlet channel 40 is provided with a nested port corresponding to the communication port. The nested port of the powder outlet channel 40 can be fixed to the communication port by screws, so that the communication port can communicate with the outside through the powder outlet channel 40. Furthermore, when the ground powdery material is transmitted to the communication port, it then enters the powder outlet channel 40 from the communication port and is thus output outside the grinding device 1 through the powder outlet channel 40.

[0081] Please refer toFigure 6 The grinding device 1 further includes a power assembly 70. The power assembly 70 includes a driving motor 701, and the driving motor 701 is disposed on the grinding bracket 10. A rack 7012 is provided on the motor shaft 7011 of the driving motor 701, and the rack 7012 is meshed and connected with a double gear 71, and the double gear 71 is meshed and connected with a shaft gear 72. Among them, the double gear 71 is disposed on the grinding bracket 10; the shaft gear 72 is disposed on the support shaft 103 and is coaxially connected to the grinding cutter set 20 and the powder scraping impeller 30. In some embodiments, when the driving motor 701 operates, the motor shaft 7011 rotates, drives the rack 7012 to rotate, and then the rack 7012 drives the double gear 71 to rotate, and the double gear 71 drives the shaft gear 72 to rotate. Thus, the shaft gear 72 drives the grinding cutter set 20 and the powder scraping impeller 30 to rotate through the coaxial structure, so as to grind the material to be ground and scrape and convey the ground powder material.

[0082] The above are only the optional embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A grinding device, characterized in that: The grinding device comprises a grinding bracket, a grinding knife group, a powder scraping impeller, a powder outlet channel, a first plasma generator and a second plasma generator; The grinding bracket is provided with a grinding chamber, the grinding knife group and the powder scraping impeller are arranged in the grinding chamber, the powder scraping impeller includes a plurality of blades, wherein the grinding knife group is arranged above the powder scraping impeller, and the grinding chamber is divided into an inner chamber and an outer chamber by the powder scraping impeller; The first plasma generator is arranged in the inner chamber, and the second plasma generator is arranged in the outer chamber or the powder outlet channel.

2. The grinding device according to claim 1, characterized in that The first plasma generator is protrudingly arranged at the bottom of the inner compartment, and each of the blades is provided with an avoidance opening. When the blades rotate, the blades pass through the first plasma generator through the avoidance opening.

3. The grinding device according to claim 1, characterized in that: The first plasma generator is protrudingly arranged on the side wall of the inner chamber, and each of the blades is provided with an avoidance opening. When the blades rotate, the blades pass through the first plasma generator through the avoidance opening.

4. The grinding device according to claim 1, characterized in that: The grinding knife set includes a first grinding part and a second grinding part; The first grinding portion is disposed at the periphery of the second grinding portion, and a gap is disposed between the first grinding portion and the second grinding portion.

5. The grinding device according to claim 4, characterized in that: The gap has a structure that is wide at the top and narrow at the bottom.

6. The grinding device according to claim 5, characterized in that The grinding bracket is provided with a supporting frame and a supporting shaft; The first grinding part is fixed on the grinding bracket by being mounted on the support frame; The second grinding part is installed on the supporting shaft.

7. The grinding device according to claim 6, characterized in that The powder scraping impeller also includes a blade bracket, and the blades are arranged on the periphery of the blade bracket; The powder scraping impeller is mounted on the support shaft through the blade bracket; The plurality of blades are disposed below a gap between the first grinding portion and the second grinding portion.

8. The grinding device according to claim 7, characterized in that: The grinding bracket is provided with a communication port which is in communication with the grinding chamber, the communication port is connected with the powder outlet channel, and the communication port is located on the rotating outer diameter of the powder scraping impeller.

9. The grinding device according to claim 8, characterized in that The communication port is convexly arranged on the grinding bracket, and the powder outlet channel is sleeved on the communication port.

10. The grinding device according to claim 9, characterized in that The grinding device further comprises a power assembly, wherein the power assembly comprises a driving motor, and the driving motor is arranged on the grinding bracket; The motor shaft of the driving motor is provided with a gear rod, the gear rod is meshed and connected with a double gear, and the double gear is meshed and connected with a shaft gear; The double gear is arranged on the grinding bracket; The shaft gear is arranged on the supporting shaft and is coaxially connected with the grinding knife set and the powder scraping impeller.

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