Grinding device

Abstract

The utility model provides a grinding device which comprises a grinding support, a grinding cutter set, a powder scraping impeller, a powder outlet channel and a plasma generator, and the plasma generator comprises a generator body, a first electrode end and a second electrode end; the grinding support is provided with a grinding bin, the grinding cutter set and the powder scraping impeller are arranged in the grinding bin, and the grinding cutter set is arranged above the powder scraping impeller; a communication port communicated with the grinding bin is formed in the grinding bracket and is connected with the powder outlet channel; the generator body is arranged on the grinding support, the first electrode end is arranged at the communicating opening, the second electrode end is arranged in the powder outlet channel, and the first electrode end and the second electrode end are electrically connected with the generator body. According to the device, the electrode ends are arranged at the communicating opening of the grinding bin and the powder outlet channel and in the powder channel correspondingly, the dual static electricity eliminating effect is achieved, and the improvement effect on the problems of residual powder remaining and powder flying is enhanced.

Description

Technical Field

[0001] This application relates to the technical field of grinding devices, and particularly relates to a grinding device. Background Art

[0002] To enhance the convenience of life, various grinding devices have emerged on the market to grind powders more conveniently and quickly, such as grinding soybean milk powder, coffee powder, etc.

[0003] During the grinding process, the grinding medium (such as the grinding knife in the grinding device) collides and rubs against the material to be ground. Friction occurs between the material particles and between the particles and the inner wall of the grinding machine. These frictions cause the accumulation of electric charges. Since some parts of the material lose electrons and become positively charged, and some parts gain electrons and become negatively charged, this uneven charge distribution leads to the generation of electrostatic forces between the materials or between the materials and the wall of the grinding machine.

[0004] In addition, especially in the case of dry grinding, due to the lack of the conductive effect of the liquid medium, the electrostatic effect will be more significant. If the ground powder is very fine, the contact area between them will also decrease, making it difficult for the charges to be neutralized through contact. Therefore, static electricity will accumulate more easily. Moreover, the existence of static electricity will cause the adsorption and agglomeration of dust, and will also bring problems such as flying powder and residual powder remaining, making it difficult to clean, and will also affect the grinding efficiency and product quality.

[0005] Currently, although most grinding machines on the market use plasma generators to remove static electricity and reduce flying powder, the problem of residual powder remaining in the grinding machine has not been effectively improved. Utility Model Content

[0006] This application provides a grinding device, which generates a dual effect of eliminating static electricity by respectively arranging electrode ends at the communication port of the grinding chamber and the powder outlet channel and in the powder channel, and strengthens the improvement effect on the problems of residual powder remaining and flying powder.

[0007] This application provides a grinding device, including a grinding bracket, a grinding knife set, a powder scraping impeller, a powder outlet channel, and a plasma generator. The plasma generator includes a generator main body, a first electrode end, and a second electrode end; the grinding bracket is provided with a grinding chamber, the grinding knife set and the powder scraping impeller are arranged in the grinding chamber, wherein the grinding knife set is arranged above the powder scraping impeller; a communication port communicating with the grinding chamber is provided on the grinding bracket, and the communication port is connected to the powder outlet channel; the generator main body is arranged on the grinding bracket, the first electrode end is arranged at the communication port, and the second electrode end is arranged in the powder outlet channel, wherein the first electrode end and the second electrode end are respectively electrically connected to the generator main body.

[0008] Preferably, the first electrode end includes a first frame body, a first positive electrode, and a first negative electrode; the first frame body is disposed outside the communication port, and the first positive electrode and the first negative electrode are inserted into the communication port.

[0009] Preferably, the second electrode end includes a second frame body, a second positive electrode, and a second negative electrode; the first frame body is disposed outside the powder outlet channel, and the second positive electrode and the second negative electrode are inserted into the powder outlet channel.

[0010] Preferably, the grinding knife set includes a first grinding part and a second grinding part; the first grinding part is disposed around the second grinding part, and a gap is provided between the first grinding part and the second grinding part.

[0011] Preferably, the gap has a structure that is wider at the top and narrower at the bottom.

[0012] Preferably, the grinding bracket is provided with a support frame and a support shaft; the first grinding part is fixed to the grinding bracket by being mounted on the support frame; the second grinding part is mounted on the support shaft.

[0013] Preferably, the powder scraping impeller includes a blade bracket and a plurality of blades disposed on the peripheral side 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 the gap between the first grinding part and the second grinding part.

[0014] Preferably, the communication port is located on the outer diameter of the rotation of the powder scraping impeller.

[0015] Preferably, the communication port protrudes from the grinding bracket, and the powder outlet channel is sleeved on the communication port.

[0016] Preferably, the grinding device further includes a power assembly, and the power assembly includes a driving motor. The driving motor is disposed on the grinding bracket; a toothed rod is provided on the motor shaft of the driving motor, and 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 disposed on the grinding bracket; the shaft gear is disposed on the support shaft and is coaxially connected with the grinding knife set and the powder scraping impeller.

[0017] In the grinding device proposed by the embodiment of the present application, by providing the first electrode end of the plasma generator at the communication port of the grinding chamber and the powder outlet channel, and by providing the second electrode end of the plasma generator in the powder outlet channel, a dual effect of eliminating static electricity is generated, strengthening the improvement effect on the problem of residual powder retention and flying powder. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the grinding device proposed by the embodiment of the present application;

[0019] Figure 2 It is a schematic structural diagram of the plasma generator proposed by the embodiment of the present application;

[0020] Figure 3 Structural schematic diagram of the grinding tool set proposed in the embodiment of the present application;

[0021] Figure 4 Structural schematic diagram of the grinding bracket proposed in the embodiment of the present application;

[0022] Figure 5 Structural schematic diagram of the power assembly proposed in the embodiment of the present application.

[0023] Description of main element symbols

[0024] Grinding device 1

[0025] Grinding bracket 10

[0026] Grinding chamber 101

[0027] Communication port 102

[0028] Support frame 103

[0029] Support shaft 104

[0030] Grinding tool set 20

[0031] First grinding part 201

[0032] Second grinding part 202

[0033] Powder scraping impeller 30

[0034] Vane support 301

[0035] Vane 302

[0036] Powder outlet channel 40

[0037] Plasma generator 50

[0038] Generator main body 501

[0039] First electrode terminal 502

[0040] First frame 5021

[0041] First positive electrode 5022

[0042] First negative electrode 5023

[0043] Second electrode terminal 503

[0044] Second frame 5031

[0045] Second positive electrode 5032

[0046] Second negative electrode 5033

[0047] Power assembly 60

[0048] Drive motor 601

[0049] Motor shaft 6011

[0050] Rack 6012

[0051] Double gear 61

[0052] Shaft gear 62 Specific implementation mode

[0053] 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. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0054] 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, then such 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 this specific posture changes, then such directional indications will also change accordingly.

[0055] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, then such 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 a solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. 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.

[0056] Generally, during the grinding process, the grinding medium (such as the grinding knife in the grinding device) impacts and rubs against the material to be ground. Friction will occur between the material particles and between the particles and the inner wall of the grinding machine. These frictions will cause the accumulation of electric charges. Since some parts of the material lose electrons and become positively charged, and some parts gain electrons and become negatively charged, this imbalance in charge distribution causes an electrostatic force to be generated between the materials or between the materials and the wall of the grinding machine.

[0057] In addition, especially in the case of dry grinding, due to the lack of the conductive effect of the liquid medium, the electrostatic effect will be more significant. If the ground powder is very fine, the contact area between them will also decrease, making it difficult for charges to be neutralized through contact. Therefore, static electricity will accumulate more easily. Moreover, the existence of static electricity will cause the adsorption and agglomeration of dust, and will also bring problems such as the retention of flying powder and residual powder, making it difficult to clean, and will also affect the grinding efficiency and product quality.

[0058] Currently, although most grinders on the market use plasma generators to remove static electricity and reduce flying powder, the problem of residual powder retention in the grinder has not been effectively improved.

[0059] In view of this, the embodiment of the present application proposes a grinding device. By setting the electrode end of the plasma generator at the communication port between the grinding chamber and the powder outlet channel, and setting the electrode end of the plasma generator in the powder outlet channel, plasma is released to neutralize the charges of the powdery material, eliminating the static electricity between the powdery materials, thereby strengthening the improvement effect of the problems of residual powder retention and flying powder caused by static electricity.

[0060] Please refer to Figure 1 , which is a schematic structural diagram of the grinding device 1 proposed by the embodiment of the present application. The grinding device 1 includes a grinding bracket 10, a grinding knife group 20, a powder scraping impeller 30, a powder outlet channel 40 and a plasma generator 50. Among them, the plasma generator 50 includes a generator main body 501, a first electrode end 502 and a second electrode end 503.

[0061] The grinding bracket 10 is provided with a grinding chamber 101. The grinding knife group 20 and the powder scraping impeller 30 are arranged in the grinding chamber 101. Among them, the grinding knife group 20 is arranged above the powder scraping impeller 30. The grinding bracket 10 is provided with a communication port 102 communicating with the grinding chamber 101, and the communication port 102 is connected to the powder outlet channel 40. The generator main body 501 is arranged on the grinding bracket 10, the first electrode end 502 is arranged at the communication port 102, and the second electrode end 503 is arranged in the powder outlet channel 40. Among them, the first electrode end 502 and the second electrode end 503 are respectively electrically connected to the generator main body 501.

[0062] 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. Then, the ground powdery material 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 powdery material from falling into the lower transmission mechanism, effectively ensuring the good operation of the transmission mechanism.

[0063] The grinding chamber 101 is used to accommodate the grinding cutter set 20, the powder scraping impeller 30, and the material to be ground. The grinding cutter set 20 is used to grind the material to be ground, and the powder scraping impeller 30 is used to scrape the ground powdery material and convey it to the communication port 102. The communication port 102 is used to output the powdery material to the powder outlet channel 40, and the powder outlet channel 40 is used to output the powdery material outside the grinding device 1.

[0064] The plasma generator 50 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.

[0065] The generator body 501 is used to provide the high voltage for generating plasma to the first electrode end 502 and the second electrode end 503. It can be understood that the generator body 501 is the core component of the plasma generator 50. The generator body 501 includes all the circuits and control systems required for generating plasma to provide a high voltage suitable for generating plasma. In some embodiments, the generator body 51 can be arranged beside the grinding chamber 101 and can be fixed to the grinding bracket 10 by screws.

[0066] The first electrode end 502 and the second electrode end 503 are used to receive the high voltage generated by the generator body 501 and thus release plasma. Specifically, the plasma released by the first electrode end 502 and the second electrode end 503 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.

[0067] In some embodiments, the first electrode end 502 can be fixed to the communication port 102 on the grinding bracket 10 by screws. Furthermore, when the powdery material ground by the grinding cutter set 20 is scraped to the communication port 102 by the powder scraping impeller 30, the plasma released by the first electrode end 502 neutralizes the charge of the powdery material, eliminating the static electricity between the powdery materials, thereby improving the accumulation of the powdery material in the grinding chamber 101 due to static electricity, reducing the residual powder retention in the grinding chamber 102, and at the same time improving the flying powder caused by static electricity.

[0068] In some embodiments, the second electrode end 503 can be fixed to the powder outlet channel 40 by screws. Furthermore, when the powdery material scraped to the communication port 102 by the powder scraping impeller 30 then drops from the communication port 102 into the powder outlet channel 40, the plasma released by the second electrode end 503 neutralizes the charge of the powdery material, eliminating the static electricity between the powdery materials, thereby improving the accumulation of the powdery material in the powder outlet channel 102 due to static electricity, reducing the residual powder retention in the powder outlet channel 102, and at the same time improving the flying powder caused by static electricity.

[0069] The grinding device 1 proposed in the embodiment of the present application generates a dual effect of eliminating static electricity by setting the first electrode end 502 of the plasma generator 50 at the communication port 10 and setting the second electrode end 503 of the plasma generator 50 in the powder outlet channel 40, strengthening the improvement effect on the problem of residual powder retention and flying powder.

[0070] Please refer to Figure 2 , which is a schematic structural diagram of the plasma generator 50 proposed in the embodiment of the present application.

[0071] The first electrode end 502 includes a first frame body 5021, a first positive electrode 5022 and a first negative electrode 5023. The first frame body 5021 is arranged outside the communication port 102, and the first positive electrode 5022 and the first negative electrode 5023 are inserted into the communication port 102. It can be understood that the first positive electrode 5022 and the first negative electrode 5023 are electrically connected. When the plasma generator 50 operates, a high-voltage arc can be formed between the first positive electrode 5022 and the first negative electrode 5023, and this arc will ionize compressed air with a certain air pressure to form high-temperature plasma.

[0072] In some embodiments, the first positive electrode 5022 and the first negative electrode 5023 can be columnar structures protruding from one side of the first frame body 5021. Among them, the relative positions of the first positive electrode 5022 and the first negative electrode 5023 can be adjusted to ensure the formation of stable and efficient plasma. Holes are respectively opened on the communication port 102 at the positions corresponding to the first positive electrode 5022 and the first negative electrode 5023, so that the first positive electrode 5022 and the first negative electrode 5023 can be inserted into the communication port 102 through the holes.

[0073] The second electrode end 503 includes a second frame body 5031, a second positive electrode 5032 and a second negative electrode 5033. The second frame body 5031 is arranged outside the powder outlet channel 40, and the second positive electrode 5032 and the second negative electrode 5033 are inserted into the powder outlet channel 40. It can be understood that the second positive electrode 5032 and the second negative electrode 5033 are electrically connected. When the plasma generator 50 operates, a high-voltage arc can be formed between the second positive electrode 5032 and the second negative electrode 5033, and this arc will ionize compressed air with a certain air pressure to form high-temperature plasma.

[0074] In some embodiments, the second positive electrode 5032 and the second negative electrode 5033 may be columnar structures protruding from one side of the second frame 5031. The relative positions of the second positive electrode 5032 and the second negative electrode 5033 can be adjusted to ensure the formation of a stable and efficient plasma. Holes are respectively formed in the powder outlet channel 40 corresponding to the positions of the second positive electrode 5032 and the second negative electrode 5033, so that the second positive electrode 5032 and the second negative electrode 5033 can be inserted into the powder outlet channel 40 through the holes.

[0075] Please refer to Figure 3 , which is a schematic structural diagram of the grinding tool set 20 proposed in the embodiment of the present application.

[0076] The grinding tool 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. The gap between the first grinding part 201 and the second grinding part 202 is a structure that is wider at the top and narrower at the bottom. The wider structure at the top facilitates the addition of the material to be ground from above, while the narrower structure at the bottom makes the grinding more sufficient. In some embodiments, the first grinding part 201 and the second grinding part 202 may 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 powder material can fall to the bottom of the grinding bin 102 through the gap, and then be scraped and conveyed to the communication port 102 by the powder scraping impeller 30.

[0077] Please refer to Figure 4 , which is a schematic structural diagram of the grinding bracket 10 proposed in the embodiment of the present application.

[0078] The grinding bracket 10 is provided with a support frame 103 and a support shaft 104. The first grinding part 201 is fixed to the grinding bracket 10 by being installed on the support frame 103, and the second grinding part 201 is fixed to the grinding bracket 10 by being installed on the support shaft 104. In some embodiments, the support shaft 101 can be fixed inside 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 103 by screws; the second grinding part 202 is rotatably installed on the support shaft 104, and thus the second grinding part 202 can rotate around the support shaft 104. 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.

[0079] Please refer to Figure 5, the powder scraping impeller 30 includes a blade support 301 and a plurality of blades 302 disposed on the peripheral side of the blade support 301. The powder scraping impeller 30 is mounted on the support shaft 104 through the blade support 301, and the blades 302 are disposed below the gap between the first grinding portion 201 and the second grinding portion 202. In some embodiments, the blade support 301 is rotatably mounted on the support shaft 104, so that the powder scraping impeller 30 can rotate around the support shaft 104, thereby driving the blades 302 to rotate, and the blades 302 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 302 can contact the inner wall of the grinding chamber 102 to scrape the powder adhered to the inner wall of the grinding chamber 102.

[0080] The communication port 102 is located on the outer diameter of the rotation of the powder scraping impeller 30. In some embodiments, when the powder scraping impeller 30 rotates, it drives the blades 302 to rotate to convey the powdery material to the communication port 102.

[0081] The communication port 102 protrudes from the grinding support 10, and the powder outlet channel 40 is sleeved on the communication port 102. 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 102. The nested port of the powder outlet channel 40 can be fixed to the communication port 102 by screws, so that the communication port 102 can be communicated with the outside through the powder outlet channel 40. Further, when the ground powdery material is transmitted to the communication port 102, it then enters the powder outlet channel 40 from the communication port 102, and is thus output outside the grinding device 1 through the powder outlet channel 40.

[0082] Please refer to Figure 5 , the grinding device 1 further includes a power assembly 60. The power assembly 60 includes a driving motor 601, and the driving motor 601 is disposed on the grinding support 10. A rack 6012 is provided on the motor shaft 6011 of the driving motor 601, and the rack 6012 is meshed and connected with a double gear 61, and the double gear 61 is meshed and connected with a shaft gear 62. Among them, the double gear 61 is disposed on the grinding support 10; the shaft gear 62 is disposed on the support shaft 104 and is coaxially connected with the grinding cutter group 20 and the powder scraping impeller 30. In some embodiments, when the driving motor 601 operates, the motor shaft 6011 rotates and drives the rack 6012 to rotate, and then the rack 6012 drives the double gear 61 to rotate, and the double gear 61 drives the shaft gear 62 to rotate. Thus, the shaft gear 62 drives the grinding cutter group 20 and the powder scraping impeller 30 to rotate through the coaxial structure to grind the material to be ground and scrape and convey the ground powder material.

[0083] The grinding device 1 proposed in the embodiment of the present application generates a dual static elimination effect by setting the first electrode end 502 of the plasma generator 50 at the communication port 102 between the grinding chamber 101 and the powder outlet channel 40, and by setting the second electrode end 503 of the plasma generator in the powder outlet channel 40, which enhances the improvement effect on the problem of residual powder retention and flying powder.

[0084] The above are only alternative embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or any 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 and a plasma generator, and the plasma generator comprises a generator body, a first electrode end and a second electrode end; The grinding bracket is provided with a grinding chamber, the grinding knife group and the powder scraping impeller are arranged in the grinding chamber, wherein the grinding knife group is arranged above the powder scraping impeller; The grinding bracket is provided with a communication port communicating with the grinding chamber, and the communication port is connected to the powder outlet channel; The generator body is arranged on the grinding bracket, the first electrode end is arranged at the connecting port, and the second electrode end is arranged in the powder outlet channel, wherein the first electrode end and the second electrode end are electrically connected to the generator body respectively.

2. The grinding device according to claim 1, characterized in that The first electrode terminal includes a first frame, a first positive electrode and a first negative electrode; The first frame is disposed outside the communication port, and the first positive electrode and the first negative electrode are inserted into the communication port.

3. The grinding device according to claim 2, characterized in that: The second electrode terminal includes a second frame, a second positive electrode and a second negative electrode; The first frame is arranged outside the powder outlet channel, and the second positive electrode and the second negative electrode are inserted into the powder outlet channel.

4. The grinding device according to claim 3, 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 comprises a blade support and a plurality of blades arranged on the periphery of the blade support; 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 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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