grinder

Abstract

The application discloses a grinder and relates to the technical field of material crushing equipment.The grinder comprises a machine box and a grinding disc assembly installed in the machine box; the grinding disc assembly comprises a first moving grinding disc, a second moving grinding disc and a static grinding disc; a plurality of first grinding knives are arranged on the first moving grinding disc; the second moving grinding disc comprises a plurality of second grinding knives and a plurality of supports connected with the second grinding knives in one-to-one correspondence, and material areas are formed between two supports; a plurality of third grinding knives are arranged on the static grinding disc; the second grinding knives are oppositely arranged with the first grinding knives and oppositely rotate, and a first grinding area is formed between the second grinding knives; the second grinding knives are also oppositely arranged with the third grinding knives, and a second grinding area is formed between the second grinding knives and the third grinding knives. The relative rotating speed and the grinding efficiency are remarkably improved through the two oppositely rotating moving grinding discs, the large-volume material areas are formed through the interval arrangement of the supports, the material flowability and the throughput are improved, and the fine grinding is realized in combination with the double-grinding-area structure, so that the problems of low efficiency and insufficient productivity of the existing grinder are solved.

Description

Technical Field

[0001] This invention relates to the field of material crushing equipment technology, specifically to a grinding mill. Background Technology

[0002] As a basic industrial piece of equipment, grinding mills are widely used in the crushing and grinding of materials such as ores, metals, and plastics. Their performance directly affects the efficiency of subsequent production processes and product quality. A typical grinding mill structure usually includes a casing, a moving grinding disc, a fixed grinding disc, and a drive motor. The motor drives the moving grinding disc to rotate relative to the fixed grinding disc. The shearing, squeezing, and impact forces generated by the relative motion between the two discs crush the material fed into the mill to the required particle size.

[0003] Currently, based on the arrangement of the moving and stationary grinding discs, grinding machines are mainly divided into two mainstream structures. The first is the end-face grinding type, where the moving and stationary grinding discs face each other, and grinding blades are closely arranged along the circumference of the working surface of each disc, forming a roughly planar grinding gap. The second is the circumferential grinding type, where both the moving and stationary grinding discs are annular, with the moving disc located on the inner ring and the stationary disc on the outer ring. Grinding blades are closely arranged on the circumferential surface of each disc, forming a roughly annular grinding gap. In the circumferential grinding structure, during operation, the material passes through the grinding blades on the moving disc under centrifugal force and enters the annular grinding gap, thus being pulverized into powder.

[0004] The aforementioned grinding machines still have significant technical shortcomings in practical applications. First, regardless of whether it is an end-face or circumferential structure, the arrangement and number of grinding blades determine its limitations in efficiency. How to improve energy efficiency based on existing equipment is a direction that the industry has been exploring. Second, the flowability of materials entering the grinding area in existing grinding machines is limited, mainly due to the small volume. This limitation also leads to low grinding efficiency and low equipment capacity. Summary of the Invention

[0005] The present invention aims to solve the technical problems of low efficiency and insufficient production capacity of existing grinding machines due to the limited arrangement and number of grinding blades and the limited grinding volume, and to provide a grinding machine with novel structure, high grinding efficiency and strong processing capacity.

[0006] A grinding machine according to the present invention includes a housing and a grinding disc assembly installed inside the housing. The grinding disc assembly includes a first moving grinding disc and a second moving grinding disc. A plurality of first grinding blades are disposed on the first moving grinding disc; the second moving grinding disc includes a plurality of second grinding blades, which are disposed facing the plurality of first grinding blades, and the angular displacement directions of the second moving grinding disc and the first moving grinding disc are opposite; the gap between the plurality of first grinding blades and the plurality of second grinding blades forms a first grinding zone.

[0007] Unlike traditional solutions, this technology abandons the conventional "one moving, one fixed" grinding disc setup. Instead, it employs two moving grinding discs rotating in opposite directions or towards each other. This allows the material to undergo shearing and grinding actions from grinding blades in both directions within the first grinding zone, significantly increasing the relative rotational speed and grinding efficiency between the discs, thereby enhancing equipment capacity. Furthermore, due to the increased efficiency, the grinding time is shortened, significantly reducing friction, collisions, compression, and over-grinding between materials. This results in a narrower particle size distribution, more uniform particles, and better grinding performance. In addition, the shorter grinding time helps control temperature rise, making it particularly suitable for grinding materials containing adhesives, effectively preventing problems such as sticking or aggregation caused by the melting of adhesives.

[0008] In some examples of this invention, the rotational speed of the second moving grinding disc is greater than that of the first moving grinding disc. By setting a speed difference, a velocity gradient is created between the two moving grinding discs, further enhancing the shearing force on the material and optimizing the grinding effect.

[0009] In some examples of the present invention, the grinding disc assembly further includes a stationary grinding disc that is stationary relative to the first and second moving grinding discs. The stationary grinding disc is provided with a plurality of third grinding blades, which are arranged facing the plurality of first or second grinding blades, with the gap between them forming a second grinding zone. This solution, by adding a stationary grinding disc, forms two grinding zones, further improving the grinding fineness and finished product quality.

[0010] In some examples of the present invention, a plurality of first grinding blades, a plurality of second grinding blades, and a plurality of third grinding blades are each distributed along a circumference, and the circumferences containing the three blades are arranged coaxially, with the circumferences containing the first grinding blades and the circumferences containing the third grinding blades located on the outer circumferences of the circumferences containing the second grinding blades. This coaxial multi-layer arrangement allows the grinding area to be expanded radially, enabling the material to move outwards under centrifugal force and be thoroughly ground.

[0011] In some examples of this invention, the second grinding blade includes a plurality of first blades corresponding to the first grinding blade and a plurality of second blades corresponding to the third grinding blade. A first grinding zone is located between the first blades and the first grinding blade, and a second grinding zone is located between the second blades and the third grinding blade. Integrating the second grinding blade into a double-bladed structure allows it to participate in the operation of two grinding zones simultaneously, simplifying the structure of the grinding disc assembly, optimizing the spatial layout of the grinding blade and the grinding disc, and significantly improving grinding efficiency without changing the overall appearance and volume of the grinding machine.

[0012] In some examples of this invention, an obtuse angle α is formed between corresponding first and second cutting edges, and an acute angle β corresponding to the obtuse angle α is formed between corresponding first and third grinding blades. This angular relationship further optimizes the spatial layout of the grinding blades and grinding disc.

[0013] In some examples of the present invention, a plurality of second grinding blades are spaced apart, and the second moving grinding disc also includes a plurality of supports that are connected one-to-one with the plurality of second grinding blades, and a material zone is formed between the two supports.

[0014] Unlike traditional methods where grinding blades are closely spaced, this design uses spaced-out grinding blades and a support structure, freeing up significant space inside the grinding disc and creating a material zone with a significantly increased volume. This reduces the material density per unit volume, decreases interference between materials, and greatly improves flowability, thus significantly increasing grinding efficiency. Simultaneously, the reduced material density also significantly decreases friction, collisions, compression, and over-grinding during the grinding process, further benefiting the grinding effect. Furthermore, the low-density material environment helps control temperature rise.

[0015] In some examples of this invention, the chassis includes a housing and a cover. A first and second moving grinding disc are rotatably mounted inside the housing, while a stationary grinding disc is fixedly mounted on the cover. This assembly method is compact, facilitates the installation and positioning of the stationary grinding disc, and allows for easy maintenance and cleaning after the cover is opened.

[0016] In some examples of this invention, the first and second moving grinding discs are rotatably connected to the housing via a transmission mechanism; the transmission mechanism includes a first rotating shaft and a second rotating shaft. One end of the first rotating shaft is fixedly connected to the support of the second moving grinding disc, and the other end extends from the side of the housing away from the cover; the second rotating shaft is a hollow shaft, coaxially sleeved outside the first rotating shaft, with one end fixedly connected to the first moving grinding disc and the other end extending from the side of the housing away from the cover. This coaxially sleeved double-shaft transmission structure realizes independent driving and reverse rotation of the two moving grinding discs, with a compact structure, smooth transmission, and effectively solves the technical problem of coaxial output of two rotating components.

[0017] In some embodiments of the present invention, the transmission mechanism further includes a first bearing disposed between the first rotating shaft and the second rotating shaft. The first bearing is used to support the relative rotation between the first rotating shaft and the second rotating shaft, reduce friction, and ensure transmission accuracy and stability.

[0018] In some examples of the present invention, the transmission mechanism further includes a bearing housing fixed to the housing, a second rotating shaft passing through the bearing housing, and the second rotating shaft and the bearing housing being connected by a second bearing. The bearing housing and the second bearing are used to stably support the second rotating shaft on the housing, withstand the radial and axial loads generated during the grinding process, and ensure the reliability of the equipment operation.

[0019] In some examples of the present invention, the grinding mill further includes a first drive mechanism for driving a first rotating shaft and a second drive mechanism for driving a second rotating shaft. By controlling the rotational speed and direction of the two moving grinding discs separately through two independent drive mechanisms, the grinding parameters can be flexibly adjusted to meet the grinding requirements of different materials.

[0020] In some examples of this invention, the chassis is provided with a material inlet and a material outlet. The material ground by the grinding disc assembly moves to the material outlet simultaneously under the drive of the first and second moving grinding discs. The material is conveyed using the power generated by the rotation of the moving grinding discs, eliminating the need for additional conveying devices.

[0021] In some examples of this invention, the machine casing is further provided with several baffles to block the movement of the material. The baffles can block and guide the material that follows the rotation of the grinding disc, preventing the material from moving in the opposite direction on the inner wall of the machine casing, ensuring that the material can move smoothly towards the material outlet, and improving the discharge efficiency.

[0022] In some examples of this invention, a plurality of paddles are distributed circumferentially along the grinding disc assembly and are fixedly connected to the first moving grinding disc. Integrating the paddles onto the first moving grinding disc and rotating synchronously with it results in a simple structure and a direct and effective material feeding effect, which helps to form a stable material flow path.

[0023] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a front view of the grinding machine in an embodiment of the present invention; Figure 2 This is a schematic diagram showing the grinding machine's lid in an open state in an embodiment of the present invention; Figure 3 This is a top view of the grinding machine in an embodiment of the present invention; Figure 4 As described in the embodiments of the present invention Figure 3 Sectional view at AA; Figure 5 This is a temperature change curve of the bearing during the operation of the grinding machine in an embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures: 100 chassis; 110 enclosure; 111 Material imports; 112 Material Export; 120 box lids; 200 grinding disc assembly; 210 First moving millstone; 211 First sharpening; 220 Second moving millstone; 221 Second sharpening; 221a First Blade; 221b Second Edge; 222 bracket; 223 Material Area; 230 static grinding disc; 231 Third sharpening; 300 transmission mechanism; 310 First pivot; 320 Second Shaft; 330 First Bearing; 340 bearing housing; 350 Second Bearing; 400 First Drive Mechanism; 410 First Motor; 500 Second Drive Mechanism; 510 Second Motor; 600 picks; A. First grinding zone; B. Second grinding zone; α is the angle between the first and second cutting edges; β is the angle between the first and third sharpening tools. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] Example:

[0032] The following is for reference. Figures 1-5 The illustration depicts a grinding machine according to an embodiment of the present invention.

[0033] Specifically, this embodiment provides a grinding mill that is particularly suitable for crushing and grinding materials such as ores, metals, and plastics.

[0034] Please see the appendix Figures 1-2 The grinding mill includes a casing 100 and a grinding disc assembly 200 installed inside the casing 100. The casing 100 includes a housing 110 and a cover 120, the cover 120 being hinged to the housing 110 for easy maintenance and cleaning of the internal components. The housing 110 is provided with a material inlet 111 and a material outlet 112, used for feeding in the material to be ground and discharging the ground finished product, respectively.

[0035] Please see the appendix Figure 2The grinding disc assembly 200 is the core component of the grinding machine, including the first moving grinding disc 210, the second moving grinding disc 220, and the stationary grinding disc 230.

[0036] Please continue reading the appendix. Figure 2 The first moving grinding disc 210 is generally disc-shaped, and a plurality of first grinding blades 211 are arranged on its working surface facing the second moving grinding disc 220. The plurality of first grinding blades 211 are distributed along the circumference of the first moving grinding disc 210 and are used to shear and grind materials.

[0037] Please see the appendix Figure 2 ~Appendix Figure 4 The second moving grinding disc 220 is positioned opposite to the first moving grinding disc 210. Unlike traditional integral grinding discs, the second moving grinding disc 220 includes several second grinding blades 221 and several supports 222 connected to each of the second grinding blades 221. The supports 222 are sheet-like structures, spaced apart circumferentially along the second moving grinding disc 220, and detachably connected to the second grinding blades 221 by screws for easy maintenance and replacement. Due to the spaced arrangement of the supports 222, and from the attached... Figure 4 As can be seen, the support 222 extends radially along the second moving grinding disc 220, and the support 222 is a sheet-like structure, therefore it extends from the attached... Figure 2 and attached Figure 4 As can be seen, a material zone 223 with a significantly increased volume is formed between the two supports 222. The significantly increased volume is compared to a conventional grinder. This material zone 223 frees up a large amount of space occupied by the tightly arranged grinding blades in a conventional grinder, providing a larger area for the material to be ground.

[0038] Please continue reading the appendix. Figure 2 Appendix Figure 4 The second grinding blade 221 is positioned opposite to the first grinding blade 211, and the gap between them forms the first grinding zone A. The angular displacement directions of the first moving grinding disc 210 and the second moving grinding disc 220 are opposite, that is, they rotate in opposite directions. In this embodiment, the rotational speed of the second moving grinding disc 220 is configured to be greater than that of the first moving grinding disc 210, thereby creating a speed gradient between them and further enhancing the shearing effect on the material.

[0039] Please continue reading the appendix. Figure 2 Appendix Figure 4 The stationary grinding disc 230 is stationary relative to the first moving grinding disc 210 and the second moving grinding disc 220, and is fixedly installed inside the cover 120. When the cover 120 is closed, the stationary grinding disc 230 faces the second moving grinding disc 220. A plurality of third grinding blades 231 are provided on the stationary grinding disc 230, and these third grinding blades 231 are arranged facing the second grinding blades 221, with the gap between them forming the second grinding zone B.

[0040] Those skilled in the art will understand that, in other embodiments not shown, the third grinding blade 231 may also be arranged facing the first grinding blade 211 to form a second grinding zone.

[0041] Please continue reading the appendix. Figure 2 Appendix Figure 4 To achieve multi-position grinding, a plurality of first grinding tools 211, a plurality of second grinding tools 221, and a plurality of third grinding tools 231 are distributed circumferentially, and the circles containing them are arranged coaxially. Specifically, the circles containing the first grinding tools 211 and the circles containing the third grinding tools 231 are located on the outer side of the circle containing the second grinding tool 221, that is, the second grinding tool 221 is located in the inner layer, and the first grinding tools 211 and the third grinding tools 231 are located in the outer layer. This makes each of the plurality of first grinding tools 211, the plurality of second grinding tools 221, and the plurality of third grinding tools 231 each present a ring structure. The second grinding tool 221 faces both the first grinding tool 211 and the third grinding tool 231 in its circumferential direction, and the circles containing the plurality of first grinding tools 211 and the plurality of third grinding tools 231 can face the second grinding tool 221 side by side. This arrangement not only forms multiple grinding areas, but also reserves space on the inner side of the circumference for the arrangement of subsequent drive mechanisms.

[0042] Please continue reading the appendix. Figure 4 The second sharpening blade 221 is designed with a double-edged structure. The entire blade has a stable rhomboid surface, providing stable support for both blade edges. The double-edged structure includes a first blade 221a facing the first sharpening blade 211 and a second blade 221b facing the third sharpening blade 231. The first grinding zone A is located between the first blade 221a and the first sharpening blade 211, and the second grinding zone B is located between the second blade 221b and the third sharpening blade 231. The second sharpening blade 221 participates in the operation of both grinding zones simultaneously, further simplifying the structure of the grinding disc assembly.

[0043] Please continue reading the appendix. Figure 4 The first cutting edge 221a and the second cutting edge 221b, which correspond to each other, form an obtuse angle α, while the first grinding blade 211 and the third grinding blade 231, which correspond to the obtuse angle α, form an acute angle β. This angular relationship setting, compared to directly setting angles α and β as straight angles, can further increase the grinding area. In other words, with a larger grinding area, this method is more conducive to the physical arrangement and space utilization of the grinding disc assembly 200 inside the chassis.

[0044] Please continue reading the appendix. Figure 4To achieve the reverse rotation drive of the first moving grinding disc 210 and the second moving grinding disc 220, this embodiment adopts a coaxially sleeved double-shaft transmission structure. Specifically, the grinding machine also includes a transmission mechanism 300. The transmission mechanism 300 includes a first rotating shaft 310 and a second rotating shaft 320. One end of the first rotating shaft 310 is fixedly connected to the bracket 222 of the second moving grinding disc 220, and the other end extends from the side of the housing 110 away from the cover 120 for connecting to a power source. The second rotating shaft 320 is a hollow shaft, coaxially sleeved outside the first rotating shaft 310. One end of the second rotating shaft 320 is fixedly connected to the first moving grinding disc 210, and the other end also extends from the side of the housing 110 away from the cover 120 for connecting to another power source. To ensure smooth relative rotation between the first rotating shaft 310 and the second rotating shaft 320, a first bearing 330 is provided between them. In this embodiment, two first bearings 330 are spaced apart to improve support stability.

[0045] Please continue reading the appendix. Figure 4 The transmission mechanism 300 also includes a bearing housing 340 fixed on the housing 110. A second rotating shaft 320 passes through the bearing housing 340 and is rotatably connected to the bearing housing 340 via a second bearing 350 disposed between them. In this embodiment, two second bearings 350 are also distributed along the axial direction of the bearing housing 340 to withstand the radial and axial loads generated during the grinding process, ensuring the reliability of the equipment operation.

[0046] Please continue reading the appendix. Figure 1 Appendix Figure 3 To drive the two rotating shafts, the grinding machine also includes a first drive mechanism 400 and a second drive mechanism 500. The first drive mechanism 400 includes a first motor 410 and a first transmission assembly connected between the output end of the first motor 410 and the input end of the first rotating shaft 310. The second drive mechanism 500 includes a second motor 510 and a second transmission assembly connected between the output end of the second motor 510 and the input end of the second rotating shaft 320. In this embodiment, both the first and second transmission assemblies are belt drives, meaning they include pulleys connected to the motor output end and the rotating shaft input end respectively, and a belt connecting them. Through these two independent drive mechanisms, the speed and direction of the two moving grinding discs can be flexibly adjusted to adapt to the grinding requirements of different materials.

[0047] Please continue reading the appendix. Figure 2 To assist in material discharge, several paddles 600 are also installed inside the casing 100. These paddles 600 are distributed circumferentially along the grinding disc assembly 200 and are fixedly connected to the first moving grinding disc 210, rotating synchronously with it. The paddles 600 can provide a certain degree of obstruction and guidance to the material rotating with the grinding disc, preventing the material from moving backward on the inner wall of the casing and ensuring that the material can move smoothly towards the material outlet 112.

[0048] In this embodiment, when the grinding machine is in operation, the material to be ground is fed into the casing 100 through the material inlet 111. Driven by the rotation of the first moving grinding disc 210 and the second moving grinding disc 220, the material enters the first grinding zone A and the second grinding zone B for grinding. During the grinding process, the baffles 600 on the first moving grinding disc 210 continuously apply a blocking and guiding effect to the material, driving the material to move towards the material outlet 112. Finally, the finished product that has reached the required grinding fineness is discharged from the material outlet 112.

[0049] Other components of the grinding machine according to embodiments of the present invention, such as motors, belts, pulleys, etc., and their operation are known to those skilled in the art and will not be described in detail here.

[0050] experiment: To verify the grinding effect of the grinder described in the embodiments, a systematic performance test was conducted on the engineering prototype (model: MF-600A) employing the technical solution of this invention. The test results are described below.

[0051] I. Purpose of the Test This test aims to verify the comprehensive performance of the grinding machine of the present invention under actual working conditions, focusing on its performance in terms of production capacity, grinding fineness, and temperature rise control, so as to prove the technological progress of the present invention in terms of efficiency, production capacity and grinding quality compared with existing grinding machines.

[0052] II. Prototype and Testing Environment Description The test prototype is the grinding machine described in the embodiment of the present invention, with a main motor power of 55kW.

[0053] Ambient temperature / humidity: 15±5°C; 50±10%RH.

[0054] Power supply: 380V / 50Hz, three-phase four-wire system.

[0055] Cooling method: The bearings and spindle are cooled by circulating water with a pressure of 0.3 MPa and a temperature of <25°C.

[0056] III. Test Materials and Test Methods The tests used typical materials from the plastics crushing industry: polypropylene (PP), polyethylene (PE), ABS plastic, and high-density polyethylene (HDPE) sheets. The test methods strictly followed industry standards, as detailed below:

[0057] IV: Test Results Explanation 1. Production capacity and particle size test results

[0058] Test results show that the grinding mill of this invention exhibits good production capacity and grinding fineness when processing different plastic materials. The production capacity for PE material reaches 950 kg / h, exceeding the design target of 800 kg / h; the production capacity for PP material reaches 1050 kg / h, with a target particle size pass rate as high as 96.2%. The production capacity for HDPE fine powder is slightly lower, which is attributed to the material characteristics and can be further adjusted by optimizing the grinding blade angle.

[0059] 2. Particle size distribution test results A certain ground material was selected and screened using sieves with apertures ranging from 10 to 80 mesh, resulting in the following table—Sieve aperture and cumulative particle size distribution data:

[0060] The above data shows that, firstly, the cumulative pass rate for particles larger than 50 mesh (0.297 mm) has reached 91%, the cumulative pass rate for particles larger than 60 mesh (0.25 mm) is 94%, and the cumulative pass rate for particles larger than 80 mesh (0.177 mm) is 98%, indicating an extremely low content of ultrafine powder. This proves that the grinding mill of this invention effectively reduces over-grinding. Secondly, the material in the 20-60 mesh range (0.25 mm-0.84 mm) accounts for approximately 46%, which is the main particle size range of the material, accounting for nearly half of the total. The narrow particle size distribution proves that the material is fully dispersed and flows evenly during the grinding process, avoiding the problem of local over- or under-grinding.

[0061] 3. Temperature rise control test results The bearing temperature was monitored during 2 hours of continuous operation, and the results were as follows: Figure 5 The bearing temperature change curve is shown in the figure. It can be seen from the figure that the bearing temperature rises significantly within 20 minutes, rises slowly after 20 minutes, and tends to stabilize after 2 hours, with the peak value close to the limit.

[0062] Summarize: The core performance of the MF-600A grinding machine prototype, namely efficiency, fineness, and energy consumption, meets or even exceeds expectations, demonstrating significant innovation compared to traditional grinding machines.

[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0064] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A grinding machine, comprising a casing and a grinding disc assembly mounted within the casing, characterized in that, The grinding wheel assembly includes: The first moving grinding disc is equipped with several first grinding blades; The second moving grinding disc includes a plurality of second grinding blades, which are arranged facing each other to the plurality of first grinding blades, and the angular displacement directions of the second moving grinding disc and the first moving grinding disc are opposite. The gap between the plurality of first grinding blades and the plurality of second grinding blades forms a first grinding zone; The grinding disc assembly also includes a stationary grinding disc that is stationary relative to the first moving grinding disc and the second moving grinding disc. The stationary grinding disc is provided with a plurality of third grinding blades, which are arranged facing each other with the plurality of first grinding blades or the plurality of second grinding blades. The gap between the third grinding blades and the second grinding blades forms a second grinding zone. The second grinding blades are spaced apart, and the second moving grinding disc also includes a plurality of supports that are connected one-to-one with the plurality of second grinding blades, and a material zone is formed between each pair of the supports. The rotational speed of the second moving grinding disc is greater than that of the first moving grinding disc; A plurality of first grinding tools, a plurality of second grinding tools, and a plurality of third grinding tools are each distributed along a circumference, and the circumferences in which the three tools are located are arranged coaxially. The circumferences in which the first grinding tools are located and the circumferences in which the third grinding tools are located are located on the outer circumferences of the circumferences in which the second grinding tools are located. The second sharpening tool includes a plurality of first blades corresponding to the first sharpening tool and a plurality of second blades corresponding to the third sharpening tool, wherein the first grinding area is located between the first blades and the first sharpening tool, and the second grinding area is located between the second blades and the third sharpening tool; An obtuse angle α is formed between the first and second blades that correspond to each other, and an acute angle β corresponding to the obtuse angle α is formed between the first and third sharpening tools that correspond to each other.

2. The grinding machine according to claim 1, characterized in that, The chassis includes a housing and a cover. The first moving grinding disc and the second moving grinding disc are rotatably mounted inside the housing, and the stationary grinding disc is fixedly mounted on the cover.

3. The grinding machine according to claim 2, characterized in that, The first moving grinding disc and the second moving grinding disc are rotatably connected to the machine housing via a transmission mechanism; The transmission mechanism includes: The first rotating shaft has one end fixedly connected to the bracket of the second moving grinding disc, and the other end extends out from the side of the box body away from the box cover; The second rotating shaft is a hollow shaft, coaxially sleeved outside the first rotating shaft. One end of the shaft is fixedly connected to the first moving grinding disc, and the other end extends from the side of the housing away from the housing cover.

4. The grinding machine according to claim 3, characterized in that, The transmission mechanism further includes a first bearing disposed between the first rotating shaft and the second rotating shaft.

5. The grinding machine according to claim 3, characterized in that, The transmission mechanism further includes a bearing housing fixed on the housing, the second rotating shaft passes through the bearing housing, and the second rotating shaft and the bearing housing are connected by a second bearing.

6. The grinding machine according to claim 3, characterized in that, It also includes a first drive mechanism for driving the first rotating shaft and a second drive mechanism for driving the second rotating shaft.

7. The grinding machine according to claim 1, characterized in that, The chassis is equipped with a material inlet and a material outlet, so that the material ground by the grinding disc assembly can move to the material outlet simultaneously under the drive of the first moving grinding disc and the second moving grinding disc.

8. The grinding machine according to claim 7, characterized in that, The machine casing is also equipped with several levers to stop the movement of materials.

9. The grinding machine according to claim 8, characterized in that, Several of the aforementioned paddles are distributed circumferentially along the grinding disc assembly and are fixedly connected to the first moving grinding disc.

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