Grinding machine

Abstract

The embodiment of the invention provides a grinding machine. The grinding machine comprises a grinding shell, a screening device and a stirring device. The grinding shell is provided with a grinding cavity, a discharging hole and a stirring cavity, the discharging hole is located in the top side of the grinding cavity, the stirring cavity is communicated with the grinding cavity through the discharging hole, and a material flowing path passing through the discharging hole is formed between the stirring cavity and the grinding cavity. The screening device is arranged at the discharging hole so as to limit the grinding medium to flow along the material flowing path. At least part of the stirring device is located in the stirring cavity so as to stir materials in the stirring cavity. According to the grinding machine, the probability that the grinding medium makes contact with other parts in the grinding machine and is abraded can be reduced, and therefore the service life of equipment is prolonged.

Description

Technical Field

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

[0002] Natural asphalt, also known as ground asphalt or mineral asphalt, is formed when the light components evaporate and then, under sunlight, are polymerized by oxygen in the air to form mineral asphalt. It is primarily composed of asphaltenes, colloids, and small amounts of other inorganic substances, such as metals and non-metals. The raw natural asphalt ore is crushed and ground, and then a processing fluid is added to the resulting asphalt powder to form a natural asphalt slurry.

[0003] However, during the grinding process of the grinder in the related art, the grinding medium is likely to escape from the grinding chamber and come into contact with other components inside the grinder, thereby causing significant wear to the relevant components. Summary of the Invention

[0004] In view of this, the main purpose of the embodiments of the present application is to provide a grinding machine that reduces the probability of wear and tear caused by contact between the grinding medium and other components inside the grinding machine.

[0005] To achieve the above objectives, the technical solution of the embodiment of the present application is implemented as follows:

[0006] The present application provides a grinding machine, comprising:

[0007] a grinding shell having a grinding chamber, a discharge hole, and a stirring chamber, wherein the discharge hole is located at the top side of the grinding chamber, and the stirring chamber is connected to the grinding chamber through the discharge hole, and a material flow path is formed between the stirring chamber and the grinding chamber through the discharge hole;

[0008] a screening device, the screening device being arranged at the discharge hole to restrict the flow of the grinding medium along the material flow path;

[0009] A stirring device, at least part of which is located in the stirring chamber to stir the material in the stirring chamber.

[0010] In one embodiment, the screening device includes a screen, which is located at the discharge hole. The stirring device includes a stirring assembly and a driving member, which is driven and connected to the stirring assembly. The stirring assembly is located on the side of the screen away from the grinding chamber.

[0011] In one embodiment, the stirring assembly includes a rotor, which includes a first connecting portion and a rotating blade. The driving member is drivingly connected to the first connecting portion. The rotating blade is located on a side of the first connecting portion close to the screen and is radially inclined relative to the first connecting portion.

[0012] In one embodiment, the rotor includes a plurality of rotating blades, each of which is arranged at intervals along the circumference of the first connecting portion to form a rotating cavity together with the first connecting portion, and at least a portion of the screen is located in the rotating cavity.

[0013] In one embodiment, the stirring assembly includes a stirring member, which includes a second connecting portion and a plurality of stirring blades. The driving member is drivingly connected to the second connecting portion, and the stirring blades are arranged at intervals along the circumference of the second connecting portion.

[0014] In one embodiment, the stirring blade is inclined relative to a first direction, where the first direction is a direction away from the grinding chamber to close to the grinding chamber.

[0015] In one embodiment, the screening device includes a grate plate, which is located in the discharge hole. The grate plate includes a plurality of grates, and each of the grates is arranged at intervals along the extension direction of the grinding chamber to form a first feed channel. The first feed channel is respectively connected to the stirring chamber and the grinding chamber. Along the direction from approaching the grinding chamber to away from the grinding chamber, the cross-sectional area of ​​at least a part of the first feed channel gradually increases.

[0016] In one embodiment, the screening device includes a separator, which is located on the side of the grate plate away from the grinding chamber. The separator has a separation chamber and a feed hole. One end of the separation chamber is connected to the first feed channel, and the other end is connected to the stirring chamber through the feed hole. The hole wall of the feed hole extends toward one side of the separation chamber to form a blocking wall. The bottom end of the blocking wall is lower than the top cavity wall of the separation chamber to guide the grinding medium in the separation chamber to move toward the side away from the feed hole.

[0017] In one embodiment, the blocking wall encloses a second feed channel, and the end of the second feed channel facing away from the feed hole is connected to the separation chamber. Along the direction from approaching the grate plate to away from the grate plate, the cross-sectional area of ​​at least a portion of the second feed channel gradually increases.

[0018] In one embodiment, the stirring device further comprises a connecting shaft, the driving member is drivingly connected to the connecting shaft, and a mechanical seal or packing (filling) seal is used at the connection between the driving member and the connecting shaft.

[0019] An embodiment of the present application provides a grinding mill, comprising a grinding shell, a screening device and a stirring device. The grinding shell has a grinding chamber, a discharge hole and a stirring chamber. The discharge hole is located on the top side of the grinding chamber, and the stirring chamber is connected to the grinding chamber through the discharge hole. A material flow path passing through the discharge hole is formed between the stirring chamber and the grinding chamber. The screening device is arranged at the discharge hole to limit the flow of the grinding medium along the material flow path. At least part of the stirring device is located in the stirring chamber to stir the material in the stirring chamber. Thus, on the one hand, by limiting the flow direction of the grinding medium through the screening device, the grinding medium can be prevented from entering the subsequent process with the material, and the probability of the grinding medium contacting and wearing other components inside the grinder is reduced, thereby extending the service life of the equipment. On the other hand, by the upper discharge method, the risk of the material accumulating in the discharge hole and causing the discharge hole to be blocked can be reduced, thereby improving the discharge effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a grinding machine according to an embodiment of the present application;

[0021] Figure 2 for Figure 1 A schematic structural diagram of the grinding machine from another perspective;

[0022] Figure 3 This is a structural diagram of a grate plate according to an embodiment of the present application;

[0023] Figure 4 for Figure 3 A structural diagram of the middle grate plate from another perspective;

[0024] Figure 5 for Figure 3 Cross-section of the middle grate plate;

[0025] Figure 6 This is a schematic structural diagram of a separation element according to an embodiment of the present application;

[0026] Figure 7 A schematic structural diagram of a separation member according to an embodiment of the present application from another perspective;

[0027] Figure 8 This is a schematic structural diagram of a rotor according to an embodiment of the present application;

[0028] Figure 9 This is a schematic structural diagram of a stirring element according to an embodiment of the present application.

[0029] Description of Reference Numerals

[0030] 10. Grinding shell; 10a. Grinding chamber; 10b. Discharge hole; 10c. Stirring chamber; 20. Screening device; 21. Screen; 22. Grate plate; 221. Grate; 2211. First guide surface; 2212. Second guide surface; 2213. Third guide surface; 2214. Fourth guide surface; 22a. First feed channel; 222. Fixing part; 2221. Mounting step; 23. Separating member; 23a. Separating chamber; 23b. Feed hole; 231. Blocking wall; 232. Support body; 232a. Observation port; 233. Upper end plate; 23c. Second feed channel; 23d. Fixing groove; 30. Stirring device; 31. Driving member; 32. Rotor; 321. First connecting part; 322. Rotating blade; 33. Stirring member; 331. Second connecting part; 332. Stirring blade; 34. Connecting shaft. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. The following embodiments are only used to more clearly illustrate the technical solutions of the present application and are therefore only used as examples and are not intended to limit the scope of protection of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0032] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0034] An embodiment of the present application provides a grinding machine. Figure 1 and Figure 2 The grinding machine includes a grinding shell 10, a screening device 20 and a stirring device 30.

[0035] The grinding shell 10 has a grinding chamber 10a, a discharge hole 10b and a stirring chamber 10c. The discharge hole 10b is located on the top side of the grinding chamber 10a, and the stirring chamber 10c is connected to the grinding chamber 10a through the discharge hole 10b. A material flow path passing through the discharge hole 10b is formed between the stirring chamber 10c and the grinding chamber 10a.

[0036] The screening device 20 is provided at the discharge hole 10b to restrict the grinding media from flowing along the material flow path.

[0037] At least a portion of the stirring device 30 is located in the stirring chamber 10 c to stir the material in the stirring chamber 10 c.

[0038] Specifically, the grinding shell 10 refers to a component in the grinding machine for accommodating and grinding materials to be ground, and a grinding chamber 10a is provided inside.

[0039] The discharge hole 10b refers to the channel through which the ground material is discharged from the grinding chamber 10a.

[0040] The stirring chamber 10c is connected to the grinding chamber 10a through the discharge hole 10b, receives the material output from the grinding chamber 10a and stirs the material to prevent the material from settling and clogging the discharge hole 10b.

[0041] The screening device 20 refers to a component located at the discharge hole 10b, which allows the material to pass through on the one hand, and blocks the grinding media on the other hand to prevent it from entering the subsequent process with the material.

[0042] The structural type of the screening device 20 is not limited, as long as it can prevent the grinding media from flowing along the material flow path into the stirring chamber 10c.

[0043] The stirring device 30 is a component located in the stirring chamber 10c for stirring the material.

[0044] The structure type of the stirring device 30 is not limited, as long as it can stir the material in the stirring chamber 10c.

[0045] At least a portion of the stirring device 30 is located in the stirring chamber 10 c , which means that the entire stirring device 30 is located in the stirring chamber 10 c , or only a portion of the stirring device 30 is located in the stirring chamber 10 c .

[0046] The grinding mill of the present application includes a grinding shell 10, a screening device 20 and a stirring device 30. The grinding shell 10 has a grinding chamber 10a, a discharge hole 10b and a stirring chamber 10c. The discharge hole 10b is located on the top side of the grinding chamber 10a, and the stirring chamber 10c is connected to the grinding chamber 10a through the discharge hole 10b. A material flow path passing through the discharge hole 10b is formed between the stirring chamber 10c and the grinding chamber 10a. The screening device 20 is arranged at the discharge hole 10b to limit the flow of the grinding medium along the material flow path. At least part of the area of ​​the stirring device 30 is located in the stirring chamber 10c to stir the material in the stirring chamber 10c. Therefore, on the one hand, by limiting the flow direction of the grinding medium through the screening device 20, the grinding medium can be prevented from entering the subsequent process with the material, reducing the probability of wear caused by contact between the grinding medium and other components inside the grinder, thereby extending the service life of the equipment. On the other hand, the upper discharge method can reduce the risk of material accumulation in the discharge hole 10b causing blockage of the discharge hole 10b, thereby improving the discharge effect.

[0047] In one embodiment, please refer to Figure 1 and Figure 2 The screening device 20 includes a screen 21, which is located at the discharge hole 10b. The stirring device 30 includes a stirring assembly and a driving member 31, which is driven by the stirring assembly. The stirring assembly is located on the side of the screen 21 away from the grinding chamber 10a. As a result, on the one hand, only materials that reach a specific particle size enter the stirring chamber 10c, avoiding the mixing of insufficiently ground materials or grinding media, ensuring the quality uniformity of the materials entering the stirring process, and helping to improve the quality of the final product. On the other hand, the stirring device 30 stirs and flushes the materials entering the stirring chamber 10c, which can reduce the probability of the screen 21 being blocked by the materials.

[0048] Specifically, the screen 21 refers to a component with a filtering function. The screen 21 can screen the ground material, allowing the qualified material to pass through and intercepting the material that does not meet the screening conditions.

[0049] The aperture size of the screen 21 is determined according to actual conditions.

[0050] The stirring component refers to the component in the stirring device 30 used to stir the material. The stirring component is located on the side of the screen 21 away from the grinding chamber 10a. After the material passes through the screen 21 and enters the stirring chamber 10c, the material in the stirring chamber 10c can be directly stirred. On the one hand, the material is mixed evenly, and on the other hand, the probability of the screen 21 being blocked by the material can be reduced.

[0051] The driving member 31 is a component that provides a power source for the stirring assembly and can drive the stirring assembly to rotate.

[0052] In one embodiment, please refer to Figure 1 、 Figure 2 and Figure 8 The stirring assembly includes a rotor 32, which includes a first connecting portion 321 and rotating blades 322. The driving member 31 is drivingly connected to the first connecting portion 321. The rotating blades 322 are located on a side of the first connecting portion 321 close to the screen 21 and are inclined relative to the radial direction of the first connecting portion 321. As a result, vortexes can be formed during the rotation of the rotor 32, thereby improving the stirring efficiency.

[0053] Specifically, the first connection portion 321 is a component that connects the driving member 31 and the rotating blade 322. The first connection portion 321 transmits the power output by the driving member 31 to the rotating blade 322, so that the rotating blade 322 can rotate with the driving of the driving member 31.

[0054] Specifically, the structural type of the first connecting portion 321 is not limited.

[0055] For example, the first connection portion 321 has a first connection hole, and a partial area of ​​the driving member 31 is inserted into the first connection hole to drive the first connection portion 321 to rotate.

[0056] In one embodiment, the first connecting portion 321 has a first connecting hole, and the driving member 31 includes a driving shaft that passes through the first connecting hole. One of the first connecting hole and the driving shaft has a first engaging groove, and the other has a first engaging portion that engages with the first engaging groove. This ensures a more stable connection between the driving member 31 and the first connecting portion 321 during rotation.

[0057] The rotating blades 322 refer to components mounted on the rotor 32. The rotating blades 322 promote the flow of materials by rotating to achieve a stirring function.

[0058] The radial inclination angle of the rotating blade 322 relative to the first connecting portion 321 is not limited, as long as a vortex can be formed during the rotation process.

[0059] In one embodiment, please refer to Figure 1 、 Figure 2 and Figure 8 The rotor 32 includes a plurality of rotating blades 322, each of which is spaced apart circumferentially around the first connecting portion 321 to form a rotating cavity with the first connecting portion 321. At least a portion of the screen 21 is located within the rotating cavity. As a result, the rotating blades 322 generate eddies during rotation, which flush the grinding media within the screen 21, thereby reducing the risk of material and grinding media clogging the screen 21. Furthermore, the circumferential spacing of the rotating blades 322 around the first connecting portion 321 evenly promotes material flow, improving mixing efficiency and preventing localized insufficient mixing.

[0060] Specifically, at least a portion of the screen 21 is located in the rotating chamber, which means that the entire screen 21 is located in the rotating chamber, or only a portion of the screen 21 is located in the rotating chamber.

[0061] The inclination angles of the rotating blades 322 relative to the radial direction of the first connecting portion 321 may be the same or different.

[0062] The distance between the rotating blades 322 along the circumferential direction of the first connecting portion 321 is not limited.

[0063] In one embodiment, please refer to Figure 1 、 Figure 2 and Figure 9 The stirring assembly includes a stirring member 33, which includes a second connecting portion 331 and a plurality of stirring blades 332. The driving member 31 is drivingly connected to the second connecting portion 331, and the stirring blades 332 are arranged at intervals along the circumference of the second connecting portion 331. As a result, the driving member 31 drives the second connecting portion 331 to rotate, thereby driving the plurality of stirring blades 332 to rotate, thereby further improving the stirring efficiency. At the same time, for the grinding medium that inevitably enters the stirring chamber 10c, the stirring by the stirring blades 332 can cause the grinding medium to be centrifuged to the side of the grinding shell 10, thereby reducing the damage caused by the grinding medium to the mechanical seal in the grinder.

[0064] Specifically, the shape and number of the stirring blades 332 are not limited.

[0065] The structural type of the second connection portion 331 is not limited.

[0066] For example, the second connection portion 331 has a second connection hole, and a portion of the driving member 31 is inserted into the connection hole to drive the second connection portion 331 to rotate.

[0067] In one embodiment, the second connecting portion 331 has a second connecting hole, and the driving member 31 includes a drive shaft that passes through the second connecting hole. One of the second connecting hole and the drive shaft has a second engaging groove, and the other has a second engaging portion that engages with the second engaging groove. This ensures a more stable connection between the driving member 31 and the second connecting portion 331 during rotation.

[0068] In one embodiment, please refer to Figure 9 The stirring blade 332 is inclined relative to the first direction, and the first direction is a direction away from the grinding chamber 10a and closer to the grinding chamber 10a. In this way, the stirring effect can be further enhanced.

[0069] Specifically, the inclination angle of the stirring blade 332 relative to the first direction is not limited.

[0070] The inclination angles of the stirring blades 332 may be the same or different.

[0071] In one embodiment, please refer to Figures 1 to 5 The screening device 20 includes a grate plate 22 positioned within the discharge opening 10b. The grate plate 22 includes a plurality of grates 221 spaced apart along the extension direction of the grinding chamber 10a to form a first feed channel 22a. The first feed channel 22a communicates with the stirring chamber 10c and the grinding chamber 10a, respectively. The cross-sectional area of ​​at least a portion of the first feed channel 22a gradually increases from approaching the grinding chamber 10a to departing from the grinding chamber 10a. Thus, by gradually increasing the cross-sectional area of ​​the first feed channel 22a formed between adjacent grates 221 from approaching the grinding chamber 10a to departing from the grinding chamber 10a, only materials meeting a specified particle size standard can pass through smoothly. Substandard materials, due to obstructed passage, remain in the grinding chamber 10a for further grinding, thereby ensuring that the final discharge particle size is uniform and meets the requirements, thereby improving product quality. On the other hand, during the grinding process, part of the grinding media that passes through the grate plate 22 falls back onto the grate plate 22 under the action of gravity. The first feed channel 22a can guide the grinding media on the grate plate 22 back into the grinding chamber 10a, which helps prevent the grinding media from accumulating and clogging in the first feed channel 22a, thereby ensuring the smooth flow of the grate plate 22 and improving the grinding effect.

[0072] Specifically, the grate plate 22 refers to a component installed in the discharge hole 10b of the grinder, which plays the role of controlling the passage of materials and screening the materials.

[0073] The structural type of the grate plate 22 is not limited.

[0074] In a specific embodiment, the grate plate 22 includes a fixing portion, which is used to be installed in the discharge hole 10b. The fixing portion has an installation space, and each grate 221 is arranged at intervals along the extension direction of the grinding chamber 10a and is arranged at intervals in the installation space to form a first material transfer channel 22a between adjacent grates 221.

[0075] Specifically, the fixing portion is a part of the grate plate 22 and is used to fix the grate plate 22 at the discharge hole 10b.

[0076] The structure and shape of the fixing portion are not limited, as long as it can be disposed in the discharge hole 10b.

[0077] For example, the fixing portion is approximately annular, and the space inside the fixing portion is the installation space.

[0078] The cross-sectional area of ​​at least a portion of the first feed channel 22a gradually increases, which means that along the direction from approaching the grinding chamber 10a to away from the grinding chamber 10a, the cross-sectional area of ​​the entire first feed channel 22a gradually increases, or the cross-sectional area of ​​a portion of the first feed channel 22a away from the grinding chamber 10a gradually increases.

[0079] There is no limitation on the manner in which the cross section of the first feed channel 22a is increased.

[0080] Illustratively, along the direction from approaching the grinding chamber 10a to away from the grinding chamber 10a, the cross-sectional area of ​​at least one end of the grate 221 away from the grinding chamber 10a gradually decreases.

[0081] Specifically, the cross-sectional area refers to the cross-sectional area of ​​the grate 221 perpendicular to the first direction.

[0082] The cross-sectional area of ​​the grate 221 may be reduced in a linear or nonlinear manner.

[0083] In one embodiment, please refer to Figure 1 、 Figure 2 、 Figure 6 and Figure 7 The screening device 20 includes a separator 23, which is located on the side of the grate plate 22 facing away from the grinding chamber 10a. The separator 23 has a separation chamber 23a and a feed hole 23b. One end of the separation chamber 23a is connected to the first feed channel 22a, and the other end is connected to the stirring chamber 10c through the feed hole 23b. The wall of the feed hole 23b extends toward the side of the separation chamber 23a to form a blocking wall 231. The bottom end of the blocking wall 231 is lower than the top wall of the separation chamber 23a, thereby guiding the grinding media in the separation chamber 23a toward the side away from the feed hole 23b. Thus, the blocking wall 231 blocks the grinding media, preventing the grinding media from entering the subsequent process with the material, and performing a secondary interception of the grinding media intercepted by the grate plate 22, thereby improving the purity of the ground material. On the other hand, the blocking wall 231 can guide the grinding media that have left the grinding chamber 10a through the discharge hole 10b back into the grinding chamber 10a, reducing the situation where the material is not fully ground due to the reduction of the grinding media, thereby improving the grinding efficiency and the grinding effect of the material.

[0084] Specifically, the separation member 23 is a component provided at the discharge hole 10b for guiding the grinding media that has escaped from the grinding chamber 10a back to the grinding chamber 10a.

[0085] The material passage hole 23b refers to a channel communicating with the separation chamber 23a, and is used for allowing the ground material to pass through and leave the separation chamber 23a.

[0086] The blocking wall 231 refers to a structure formed by the hole wall of the feed hole 23b extending into the separation chamber 23a, and is used to block the grinding medium and prevent it from passing through the feed hole 23b and entering the subsequent process.

[0087] In one embodiment, please refer to Figure 1 、 Figure 2 、 Figure 6 and Figure 7 The barrier wall 231 encloses a second material transfer channel 23c. The end of the second material transfer channel 23c facing away from the material transfer hole 23b communicates with the separation chamber 23a. The cross-sectional area of ​​at least a portion of the second material transfer channel 23c gradually increases from approaching the grate plate 22 to away from the grate plate 22. This prevents the risk of material blockage caused by the narrow space of the second material transfer channel 23c during flow.

[0088] Specifically, when the material enters the second feed channel 23c from the feed hole 23b, the second feed channel 23c becomes wider, so that the material can be dispersed in the second feed channel 23c, reducing the risk of blockage, and thus allowing the ground material to be smoothly discharged from the second feed channel 23c.

[0089] The second material transfer channel 23c refers to a channel formed by the inner wall of the blocking wall 231 for materials to pass through.

[0090] The cross-sectional area of ​​at least a part of the second feed channel 23c gradually increases, which means that along the direction from approaching the grate plate 22 to away from the grate plate 22, the cross-sectional area of ​​the entire area of ​​the second feed channel 23c gradually increases, or the cross-sectional area of ​​a part of the second feed channel 23c gradually increases.

[0091] In one embodiment, please refer to Figure 1 and Figure 2 The stirring device 30 further includes a connecting shaft 34, to which the driving member 31 is drivingly connected. The connection between the driving member 31 and the connecting shaft 34 is sealed with a mechanical seal or packing. This effectively prevents leakage of the internal medium and intrusion of external impurities, ensuring a stable working environment within the stirring device 30, avoiding material loss and environmental pollution caused by medium leakage, and equipment failure caused by impurity intrusion, thereby ensuring long-term stable operation of the stirring device 30 and improving production efficiency.

[0092] In one embodiment, please refer to Figure 5The grate 221 has a first guide surface 2211 and a second guide surface 2212 on opposite sides of the grate plate 221. The first and second guide surfaces 2211, 2212 contact each other on the sides facing away from the grinding chamber 10a. As they approach the grinding chamber 10a, the first and second guide surfaces 2211, 2212 extend away from each other. Thus, the first and second guide surfaces 2211, 2212 guide the grinding media that has fallen back onto the grate plate 22 back into the grinding chamber 10a, preventing the grinding media from accumulating on the edges and clogging the first feed channel 22a of the grate plate 22.

[0093] Specifically, the first guide surface 2211 and the second guide surface 2212 refer to surfaces on the grate 221 for guiding the grinding media that fall back on the grate plate 22 to re-enter the grinding chamber 10a.

[0094] Along the spacing direction of the grate 221 , the first guide surface 2211 and the second guide surface 2212 are provided on opposite sides of the grate 221 .

[0095] The first guide surface 2211 and the second guide surface 2212 contact each other on one side away from the grinding chamber 10a, and extend away from each other on the other side. As a result, the cross-sectional area of ​​the first feed channel 22a formed by adjacent grates 221 gradually decreases along the direction away from the grinding chamber 10a to the direction close to the grinding chamber 10a, which is conducive to guiding the grinding media that falls back on the grate plate 22 to re-enter the grinding chamber 10a.

[0096] The shape of the first guide surface 2211 is not limited.

[0097] For example, the first guide surface 2211 may be a plane, a curved surface, or other shapes.

[0098] The shape of the second guide surface 2212 is not limited.

[0099] For example, the second guide surface 2212 can be a plane, a curved surface, or other shapes.

[0100] The extension angle and extension length of the first guide surface 2211 and the second guide surface 2212 are not limited, as long as they can guide the grinding medium back into the grinding chamber 10a.

[0101] In one embodiment, please refer to Figure 5The grate 221 also has a third guide surface 2213 and a fourth guide surface 2214. The third guide surface 2213 is located on the side of the first guide surface 2211 closest to the grinding chamber 10a, and the fourth guide surface 2214 is located on the side of the second guide surface 2212 closest to the grinding chamber 10a. The third guide surface 2213 and the fourth guide surface 2214 of two adjacent grates 221 are parallel and opposite to each other. This allows for more orderly movement of the material and grinding media within the first feed channel 22a, thereby improving grinding efficiency.

[0102] Specifically, the first guide surface 2211 and the third guide surface 2213 are located on one side of the grate 221, and the second guide surface 2212 and the fourth guide surface 2214 are located on the other side of the grate 221. The first guide surface 2211 and the third guide surface 2213 of adjacent grates 221 are respectively arranged opposite to the second guide surface 2212 and the fourth guide surface 2214, thereby forming a first material transfer channel 22a, which helps to guide the flow of materials and grinding media more accurately.

[0103] The shape of the third guide surface 2213 is not limited.

[0104] For example, the third guide surface 2213 is a plane.

[0105] The shape of the fourth guide surface 2214 is not limited.

[0106] For example, the fourth guide surface 2214 is a plane.

[0107] In one embodiment, please refer to Figure 2 and Figure 4 The grate plate 22 is arc-shaped, and the curvature of the grate plate 22 is the same as the curvature of the cylindrical wall of the grinding shell 10. As a result, the grate plate 22 can be closely fitted to the cylindrical wall of the grinding shell 10, reducing the risk of material being trapped or leaking in the gap between the grate plate 22 and the grinding shell 10, improving the material passing efficiency, and thus improving the grinding efficiency.

[0108] Specifically, the degree of curvature of the grate plate 22 being the same as the degree of curvature of the cylindrical wall of the grinding shell 10 means that the curvature of the grate plate 22 and the curvature of the cylindrical wall of the grinding shell 10 form an isocircular relationship. In other words, the circle on which the arc of the grate plate 22 lies isocircular with the circle on which the arc of the cylindrical wall of the grinding shell 10 lies, that is, the radius of the circular surface on which the grate plate 22 and the grinding shell 10 lie is the same.

[0109] In one embodiment, please refer to Figure 2 and Figure 4On the side of the fixing portion 222 near the grinding chamber 10a, a portion of the outer circumferential edge of the fixing portion 222 is recessed to form a mounting step 2221. The mounting step 2221 is configured to abut against the outer end surface of the wall of the discharge hole 10b. This improves the stability of the grate plate 22 and prevents it from loosening during the grinding process.

[0110] Specifically, the dimensions of the mounting step 2221 match those of the discharge hole 10b. That is, when the mounting step 2221 abuts the outer end surface of the wall of the discharge hole 10b, the portion of the fixing portion 222 near the grinding chamber 10a aligns with the wall of the discharge hole 10b. This reduces the risk of material stagnation or leakage in the gap between the grate plate 22 and the discharge hole 10b.

[0111] In one embodiment, please refer to Figure 6 and Figure 7 The separator 23 also includes an upper end plate 233 and a support body 232. The support body 232 is configured to be mounted to the discharge hole 10b. The upper end plate 233 is disposed at one end of the support body 232 and, together with the support body 232, forms a separation chamber 23a. A portion of the upper end plate 233 extends through the support body 232 to form a feed hole 23b. From a direction away from the upper end plate 233 to a direction approaching the upper end plate 233, the outer wall surface of the blocking wall 231 is inclined toward a side away from the center of the second feed channel 23c. This, on the one hand, expands the range of the blocking wall 231 that blocks the grinding medium. On the other hand, it more effectively guides the grinding medium toward the side away from the feed hole 23b, reducing the residence time of the grinding medium within the separation chamber 23a and improving grinding efficiency.

[0112] In one embodiment, please refer to Figure 2 、 Figure 6 and Figure 7 The support body 232 has an arc-shaped portion at one end near the grinding shell 10, and the degree of curvature of the support body 232 is the same as the curvature of the cylindrical wall of the grinding shell 10. This allows the support body 232 to better conform to the shape of the grinding shell 10, resulting in a tighter connection between the separator 23 and the grinding shell 10 and reducing the gap between the connections. This effectively prevents material and grinding media from leaking from the connection between the support body 232 and the grinding shell 10 during the grinding and separation processes, thereby improving the sealing of the entire grinding system.

[0113] Specifically, the degree of curvature of the support body 232 being the same as the curvature of the cylindrical wall of the grinding shell 10 means that the curvature of the area where the support body 232 and the grinding shell 10 meet isocircular with the curvature of the cylindrical wall of the grinding shell 10. In other words, the circle where the arc of the area where the support body 232 and the grinding shell 10 meet isocircular with the circle where the arc of the cylindrical wall of the grinding shell 10 meets, i.e., the radius of the circular surface where the support body 232 and the grinding shell 10 meet is the same as that of the grinding shell 10.

[0114] In one embodiment, please refer to Figure 6 The support body 232 is partially open to form an observation port that communicates with the separation chamber 23a. Through the observation port, the operator can visually observe the working conditions in the separation chamber 23a, identify and address problems in a timely manner, and thus improve the stability and reliability of the equipment operation.

[0115] Specifically, the shape and size of the observation port are not limited, as long as the operator can visually observe the working conditions in the separation chamber 23a through the observation port.

[0116] For example, the shape of the viewing port is circular.

[0117] For another example, the shape of the observation port is rectangular.

[0118] In one embodiment, a cover plate is provided at the observation port that is movable relative to the observation port, thereby preventing foreign matter from entering the separation chamber 23a through the observation port, thereby reducing the purity of the material or affecting the stability of the equipment operation.

[0119] Specifically, the material type of the cover plate is not limited.

[0120] For example, the cover plate is made of a transparent material, thereby protecting the working environment in the separation chamber 23a and making it easy to observe.

[0121] The viewing port may be disposed in any area of ​​the support body 232 .

[0122] For example, the observation port faces the connection between the separation chamber 23a and the second material transfer channel 23c, so that the connection is exposed to the outside field of view. In this way, the operator can directly observe the working conditions of the connection between the separation chamber 23a and the second material transfer channel 23c, and promptly identify and deal with problems, thereby improving the stability and reliability of equipment operation.

[0123] In one embodiment, please refer to Figure 6A portion of the upper end plate 233 is recessed to form a mounting groove, and a portion of the mounting groove is penetrated to form a feed hole 23b. The mounting groove is used to mount the screen 21. Thus, the mounting groove makes the installation process of the screen 21 more convenient, and the screen 21 can be quickly and accurately installed in place, reducing errors and difficulties during the installation process, and improving the installation efficiency of the screen 21.

[0124] In a specific embodiment, a seal is provided at the connection between the installation slot and the screen 21 , thereby improving the sealing effect and reducing the direction of material leakage from the connection between the installation slot and the screen 21 .

[0125] The connection method between the installation groove and the screen 21 is not limited.

[0126] For example, the mounting groove and the screen 21 are connected by fasteners.

[0127] For another example, the mounting groove and the screen 21 are snap-connected.

[0128] In one embodiment, please refer to Figure 6 The wall of the feeding hole 23b extends into the mounting groove to enclose the wall of the mounting groove to form a fixing groove 23d, which is used to fix the screen 21. In this way, the connection between the screen 21 and the separator 23 can be made more stable, preventing the screen 21 from being displaced and shaking during the operation of the equipment.

[0129] Specifically, the fixing groove 23d refers to the space formed by the hole wall of the feeding hole 23b extending into the installation groove and enclosed by the wall of the installation groove, which is used to firmly fix the screen 21 to ensure the stable position of the screen 21 during operation.

[0130] In one embodiment, please refer to Figure 1 and Figure 2 The top wall of the separation chamber 23a is arc-shaped, thereby preventing the grinding media and the materials that have not left the second material passage 23c from forming a dead corner or piling up at the top of the separation chamber 23a, thereby reducing the agglomeration of the materials.

[0131] Specifically, the arc angle of the top wall of the separation chamber 23a is not limited, as long as the grinding media and the materials that have not left the second material transfer channel 23c can be returned to the grinding chamber 10a.

[0132] In the description of this application, the descriptions with reference to the terms "in one embodiment", "in some embodiments", "in a specific embodiment", or "exemplary" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine different embodiments or examples described in this application and features of different embodiments or examples without contradiction.

[0133] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application are intended to be within the scope of protection of the present application.

Claims

1. A grinding machine, characterized in that: The grinding machine comprises: a grinding shell having a grinding chamber, a discharge hole, and a stirring chamber, wherein the discharge hole is located at the top side of the grinding chamber, and the stirring chamber is connected to the grinding chamber through the discharge hole, and a material flow path is formed between the stirring chamber and the grinding chamber through the discharge hole; a screening device, the screening device being arranged at the discharge hole to restrict the flow of the grinding medium along the material flow path; A stirring device, at least part of which is located in the stirring chamber to stir the material in the stirring chamber.

2. The grinding machine according to claim 1, characterized in that The screening device includes a screen, which is located at the discharge hole. The stirring device includes a stirring component and a driving member, which is driven and connected to the stirring component. The stirring component is located on the side of the screen away from the grinding chamber.

3. The grinding machine according to claim 2, characterized in that The stirring assembly includes a rotor, which includes a first connecting portion and a rotating blade. The driving member is drivingly connected to the first connecting portion. The rotating blade is located on a side of the first connecting portion close to the screen and is inclined relative to the radial direction of the first connecting portion.

4. The grinding machine according to claim 3, characterized in that The rotor includes a plurality of rotating blades, each of which is spaced apart along the circumference of the first connecting portion to enclose the first connecting portion to form a rotating cavity, and at least a portion of the screen is located in the rotating cavity.

5. The grinding machine according to claim 2, characterized in that The stirring assembly includes a stirring member, which includes a second connecting portion and a plurality of stirring blades. The driving member is drivingly connected to the second connecting portion, and the stirring blades are arranged at intervals along the circumference of the second connecting portion.

6. The grinding machine according to claim 5, characterized in that The stirring blade is inclined relative to a first direction, where the first direction is a direction away from the grinding chamber and closer to the grinding chamber.

7. The grinding machine according to any one of claims 1 to 6, characterized in that The screening device includes a grate plate, which is located in the discharge hole. The grate plate includes a plurality of grates, and the grates are arranged at intervals along the extension direction of the grinding chamber to form a first feed channel. The first feed channel is respectively connected to the stirring chamber and the grinding chamber. Along the direction from approaching the grinding chamber to away from the grinding chamber, the cross-sectional area of ​​at least a part of the first feed channel gradually increases.

8. The grinding machine according to claim 7, characterized in that The screening device includes a separator, which is located on the side of the grate plate away from the grinding chamber. The separator has a separation chamber and a feed hole. One end of the separation chamber is connected with the first feed channel, and the other end is connected with the stirring chamber through the feed hole. The hole wall of the feed hole extends toward one side of the separation chamber to form a blocking wall. The bottom end of the blocking wall is lower than the top cavity wall of the separation chamber to guide the grinding medium in the separation chamber to move toward the side away from the feed hole.

9. The grinding machine according to claim 8, characterized in that The blocking wall encloses a second feed channel, and the end of the second feed channel away from the feed hole is connected to the separation chamber. Along the direction from approaching the grate plate to away from the grate plate, the cross-sectional area of ​​at least part of the second feed channel gradually increases.

10. The grinding machine according to any one of claims 2 to 6, characterized in that: The stirring device further comprises a connecting shaft, the driving member is drivingly connected to the connecting shaft, and a mechanical seal or a packing (filling) seal is used at the connection between the driving member and the connecting shaft.

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