Grinding mill and discharge device

Abstract

This application provides a grinding mill and a discharge device. The grinding mill includes a grinding cylinder and a discharge device. The grinding cylinder has a grinding chamber and a discharge port communicating with the grinding chamber. The axial direction of the grinding cylinder is perpendicular to the height direction of the grinding mill. The discharge device has a material inlet and a material outlet. The material inlet communicates with the discharge port, and the material outlet communicates with the material inlet and is located on the top side of the material inlet. In the grinding mill and discharge device of this application embodiment, the material in the discharge device will flow upward. The grinding media is relatively heavier than the material and is not easy to escape upward, thereby reducing the probability of the grinding media in the grinding chamber entering the discharge device, improving the service life of the discharge device. Furthermore, in the event of damage to the discharge device, after the grinding mill stops, the material in the discharge device will flow back into the grinding chamber under the action of gravity, thereby significantly reducing the difficulty of maintenance and the downtime during maintenance.

Description

Technical Field

[0001] The embodiments of this application relate to the field of grinding and processing equipment, and more particularly to a grinding machine and a discharge device. Background Technology

[0002] Grinding mills are used to grind materials to achieve the desired size. To achieve better grinding results, grinding media are usually added to the grinding cylinder of the grinding mill.

[0003] In related technologies, the grinding cylinder is usually placed horizontally and the material is discharged from the end, making maintenance extremely inconvenient after the discharge device is damaged. Utility Model Content

[0004] In view of this, the present application aims to provide a grinding mill and a discharge device that can improve the life of the discharge device and facilitate the maintenance of the discharge device.

[0005] This application provides a grinding machine, which includes: a grinding cylinder having a grinding chamber and a discharge port communicating with the grinding chamber, wherein the axial direction of the grinding cylinder is perpendicular to the height direction of the grinding machine; and a discharge device having a material inlet and a material outlet, wherein the material inlet is communicating with the discharge port, and the material outlet is communicating with the material inlet and is disposed on the top side of the material inlet.

[0006] In some embodiments, the housing has the material inlet and the screen has the material outlet.

[0007] In some embodiments, the screen is a cylindrical structure with its axial direction parallel to the height direction. The screen includes a top wall and a bottom wall distributed along the height direction, and a circumferential wall connecting the top wall and the bottom wall. The material outlet is formed in the top wall, and the screen holes are formed at least in the circumferential wall.

[0008] In some embodiments, the discharge device includes a discharge pipe communicating with the material outlet. The discharge pipe includes a first pipe section and a second pipe section arranged at an angle. The first pipe section is connected to the top wall and extends along the height direction, and the end of the second pipe section away from the first pipe section extends out of the housing.

[0009] In some embodiments, the stop mechanism includes a filter plate, the thickness direction of which is parallel to the height direction, and the filter plate has a material flow channel that extends through the filter plate along the height direction.

[0010] In some embodiments, the flow area of ​​the material channel increases along the direction close to the screen; and / or the filter plate includes an annular body and a plurality of side-by-side and spaced baffles, the opposite ends of the baffles extending in the direction of extension being connected to the annular body, and the material channel is formed between adjacent baffles; and / or at least a portion of the filter plate is disposed in the discharge port, and along the height direction, the side surface of the filter plate facing away from the screen does not extend beyond the inner surface of the grinding cylinder.

[0011] In some embodiments, the discharge device further includes a connecting cylinder that connects the grinding cylinder and the housing.

[0012] In some embodiments, the discharge device further includes a liner covering the inner surface of the connecting cylinder; and / or the connecting cylinder is provided with an observation window.

[0013] In some embodiments, the discharge device further includes a guide that applies centrifugal force to the material.

[0014] In some embodiments, the screen is formed as a cylindrical structure with its axial direction parallel to the height direction, and the guide includes a drive unit and a rotor, the drive unit being used to drive the rotor to rotate about the central axis of the screen within the mounting cavity.

[0015] In some embodiments, the rotor includes a plurality of disturbance arms distributed circumferentially along the screen and extending along the height direction.

[0016] In some embodiments, the screen includes an outer cylinder and an inner cylinder arranged coaxially. The outer cylinder includes a top wall, a bottom wall, and a circumferential wall connecting the top wall and the bottom wall. The inner cylinder passes through the top wall and the bottom wall. The drive unit includes a motor and a rotating shaft connected to the motor. The rotating shaft passes through the inner cylinder. The rotor is connected to one end of the rotating shaft near the stop mechanism.

[0017] In some embodiments, the grinding machine includes a grinding element disposed within the grinding chamber, the grinding element being configured to rotate unidirectionally about the central axis of the grinding cylinder, wherein, along the rotation direction of the grinding element, the geometric center of the discharge port is located downstream of a reference surface, the reference surface being parallel to the height direction of the grinding machine and the central axis of the grinding cylinder being located within the reference surface.

[0018] Embodiments of this application also provide a discharge device, which is the discharge device of the grinding mill described in any of the above embodiments.

[0019] In the discharge device and grinding mill of this application embodiment, the material in the discharge device will flow upward. The grinding media is relatively heavy compared to the material and is not easy to escape upward, thereby reducing the probability of the grinding media in the grinding chamber entering the discharge device and improving the service life of the discharge device. In the event of damage to the discharge device, after the grinding mill stops, the material in the discharge device will flow back into the grinding chamber under the action of gravity, thereby significantly reducing the difficulty of maintenance and the downtime during maintenance. Attached Figure Description

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

[0021] Figure 2 This is a schematic diagram of the discharge device according to an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the structure of the screen according to an embodiment of this application;

[0023] Figure 4 This is a schematic diagram of the filter plate according to an embodiment of this application;

[0024] Figure 5 for Figure 2 A magnified view of part A in the middle;

[0025] Figure 6 This is a schematic diagram of the rotor structure according to an embodiment of this application;

[0026] Figure 7 This is a schematic diagram showing the positional relationship between the discharge port, grinding cylinder, and discharge device in an embodiment of this application.

[0027] Explanation of reference numerals in the attached figures

[0028] 100. Discharge device; 10. Shell; 10a. Mounting cavity; 10b. Material inlet; 20. Screen; 20a. Filter chamber; 20b. Material outlet; 21. Outer cylinder; 211. Circumferential wall; 212. Top wall; 213. Bottom wall; 22. Inner cylinder; 30. Stopping mechanism; 31. Filter plate; 31a. Material flow channel; 311. Annular body; 312. Baffle rib; 312a. First guide surface; 312b. Second guide surface; 40. Discharge pipe; 41. First pipe section; 42. Second pipe section Section; 50, Connecting cylinder; 60, Liner kit; 60a, Observation area; 70, Guide; 71, Drive unit; 711, Motor; 712, Rotating shaft; 72, Rotor; 721, Disturbance arm; 722, Adapter plate; 723, Reinforcing ring; 200, Grinding cylinder; 200a, Grinding chamber; 200b, Discharge port; 200c, Feed port; 200d, Grinding media inlet; 200e, Material discharge port; 200f, Grinding media discharge port; 300, Grinding component; 301, Grinding disc. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0030] The specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction. For example, different combinations of specific technical features can form different embodiments and technical solutions. To avoid unnecessary repetition, the various possible combinations of the specific technical features in this application will not be described separately.

[0031] In the following description, the terms "first," "second," etc., are used merely to distinguish different objects and do not indicate that the objects have the sameness or relationship. It should be understood that the directional descriptions "above," "below," "outside," and "inside" refer to the orientation under normal use conditions, while "left" and "right" refer to the left and right directions shown in the corresponding diagrams, which may or may not be the left and right directions under normal use conditions.

[0032] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. "A plurality of" means two or more.

[0033] In the description of this application, "height direction", "axial direction of the grinding cylinder", orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. The "height direction" is the direction indicated by arrow L1 in the drawings, and the "axial direction of the grinding cylinder" is the direction indicated by arrow L2 in the drawings. It should be understood that these orientation terms are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0034] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0035] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0036] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0037] Reference Figure 1 The grinding machine of this application embodiment includes a grinding cylinder 200 having a grinding chamber 200a. The axial direction of the grinding cylinder 200 is perpendicular to the height direction of the grinding machine, and the grinding cylinder 200 has a discharge port 200b communicating with the grinding chamber 200a.

[0038] Here, the height direction of the grinder is the direction of gravity during actual use, and the axial direction of the grinding cylinder 200 is specifically the horizontal direction during actual use.

[0039] The grinding cylinder 200 is specifically a cylindrical structure, and the grinding chamber 200a is specifically a cylindrical chamber.

[0040] In some embodiments, specifically, a discharge port 200b is formed on the top side of the grinding cylinder 200. The discharge port 200b is formed on the top side of the grinding cylinder 200, specifically meaning that the discharge port 200b is formed on the circumferential wall of the grinding cylinder 200, and is bounded by a plane that passes through the central axis of the grinding cylinder 200 (grinding chamber 200a) and is perpendicular to the height direction, with at least a portion of the discharge port 200b located above this plane.

[0041] The discharge port 200b is connected to the grinding chamber 200a, which specifically means that the material inside the grinding chamber 200a can reach the outside of the grinding chamber 200a through the discharge port 200b.

[0042] In addition to the discharge port 200b, the grinding cylinder 200 also has a feed port 200c and a grinding media inlet 200d communicating with the grinding chamber 200a. The feed port 200c is used to feed materials into the grinding chamber 200a, and the grinding media inlet 200d is used to feed grinding media into the grinding chamber 200a. The grinding machine may include a material feeding device communicating with the feed port 200c and / or a grinding media feeding device communicating with the grinding media inlet 200d. The specific structural form of the above devices can be determined according to the specific types of materials and grinding media, and there are no restrictions on this.

[0043] The grinding cylinder 200 has a feed end and a discharge end at its two ends along its axial direction, respectively. The feed inlet 200c is located on the side closer to the feed end, and the discharge outlet 200b is located on the side closer to the discharge end. It can be understood that during actual use, material will be continuously fed into the grinding chamber 200a from the feed inlet 200c. Therefore, the material in the grinding chamber 200a will move from the feed end to the discharge end of the grinding cylinder 200 under the action of pressure difference.

[0044] The grinding media inlet 200d is located between the feed inlet 200c and the discharge outlet 200b along the axial direction of the grinding cylinder 200. The specific location is not limited. It can be set on the side near the feed end, the side near the discharge end, or the middle position along the axial direction of the grinding cylinder 200.

[0045] In some embodiments, the grinding cylinder 200 further has a grinding media discharge port 200f communicating with the grinding chamber 200a. The grinding media discharge port 200f is located on the side near the discharge end and is used to discharge grinding media. As an example, the grinding media discharge port 200f is located on the end face of the discharge end of the grinding cylinder 200 and is located relatively close to the bottom end of the grinding cylinder 200. Since the density of the grinding media is usually greater than the density of the material, the grinding media usually settles at the bottom of the grinding chamber 200a after the grinder stops. Setting the grinding media discharge port 200f here helps to improve the discharge efficiency.

[0046] In some embodiments, the grinding cylinder 200 further has a material discharge port 200e communicating with the grinding chamber 200a. Unlike the discharge port 200b described above, the material discharge port 200e is used to discharge material from the grinding chamber 200a in case of an accident. Under normal use, the material discharge port 200e is in a closed state. As an example, the material discharge port 200e is located on the end face of the discharge end of the grinding cylinder 200 and is positioned relatively close to the top of the grinding cylinder 200. This facilitates control of the discharge volume and discharge rate of the material discharge port 200e and reduces the probability that grinding media will be discharged from the material discharge port 200e.

[0047] The grinding machine also includes a grinding element 300, which is disposed within the grinding chamber 200a and is rotatable about the central axis of the grinding cylinder 200. The specific structural form of the grinding element 300 is not limited. As an example, the grinding element 300 includes a plurality of grinding discs 301 distributed along the axial direction of the grinding cylinder 200. The plurality of grinding discs 301 are rotatable independently and / or synchronously about the central axis of the grinding cylinder 200.

[0048] The grinding machine may include a drive device for driving the grinding workpiece 300 to rotate, and the specific structure of the drive device is not limited.

[0049] The grinding element 300 serves two purposes: firstly, it agitates the material and grinding media, ensuring thorough mixing and mutual friction to achieve grinding; secondly, it provides power for the material and grinding media to move from the feed end to the discharge end.

[0050] Reference Figure 1 and Figure 2 The discharge device 100 of this application embodiment has a material inlet 10b and a material outlet 20b. The material inlet 10b is connected to the discharge outlet 200b, and the material outlet 20b is connected to the material inlet 10b and is disposed on the top side of the material inlet 10b. It should be noted that in this embodiment, the discharge outlet 200b can be disposed on the top side of the grinding cylinder 200, or on the axial end face, radial side face, etc. of the grinding cylinder 200, and there is no limitation thereto.

[0051] It is understandable that in actual use, the feed inlet 200c of the grinding cylinder 200 will be continuously fed with materials, and the materials at the material outlet 20b of the discharge device 100 will also be continuously discharged. Therefore, there will be a pressure difference between the feed inlet 200c, the discharge outlet 200b and the material outlet 20b. In addition, as mentioned above, the grinding element 300 can also provide power for the flow of materials. The materials will be able to use these forces to resist gravity, thereby realizing the flow from the material inlet 10b to the material outlet 20b along the height direction to complete the discharge.

[0052] In related technologies, grinding mills with horizontally placed grinding cylinders (i.e., with the axial direction perpendicular to the height direction of the grinding mill) are usually configured to discharge material from the axial end face of the grinding cylinder, and the material outlet and material inlet of the discharge device are roughly horizontally distributed. When the discharge device is damaged, the material in the grinding cylinder must be discharged before repair and replacement can be carried out. The repair is difficult and requires a long downtime, especially when the material is asphalt or other materials that need to be heated during the grinding process. Before discharging the material, it is necessary to wait for the material to cool down, which further prolongs the downtime.

[0053] In this embodiment, the material outlet 20b of the discharge device 100 is located on the top side of the material inlet 10b. The material in the discharge device 100 will flow upward. In the event of damage to the discharge device 100, the material in the discharge device 100 will flow back into the grinding chamber under the action of gravity after the grinder stops. This can significantly reduce the maintenance difficulty of the discharge device 100 and the downtime during maintenance.

[0054] Furthermore, it is understood that the grinding media mixed in the material are relatively highly affected by gravity. Therefore, in actual use, as the material flows from the material inlet 10b to the material outlet 20b, the grinding media may fall back into the grinding chamber 200a under the action of gravity, which helps to reduce the wear between the grinding media and the discharge device 100 and improve the service life of the discharge device 100.

[0055] In some embodiments, refer to Figure 1 and Figure 2 The discharge device 100 of this application embodiment includes a housing 10 and a screen 20.

[0056] The housing 10 has a mounting cavity 10a, and the screen 20 is disposed in the mounting cavity 10a. The screen 20 has a filtering cavity 20a and screen holes connected to the filtering cavity 20a. The specific structural form of the housing 10 and the screen 20 is not limited, as long as the mounting cavity 10a, the filtering cavity 20a and the screen holes can be formed. The aperture of the screen holes can be specifically determined by those skilled in the art according to the actual desired particle size of the material, and there is no limitation thereto.

[0057] One of the housing 10 and the screen 20 has a material inlet 10b and the other has a material outlet 20b.

[0058] exist Figure 1 and Figure 2In the illustrated embodiment, the housing 10 has a material inlet 10b, and the screen 20 has a material outlet 20b. The material inlet 10b communicates with the mounting cavity 10a, and the material outlet 20b communicates with the filtering cavity 20a, thereby achieving communication between the material inlet 10b and the material outlet 20b. In this embodiment, material enters the mounting cavity 10a of the housing 10 from the material inlet 10b, then enters the filtering cavity 20a of the screen 20 through the screen holes, and finally is discharged through the material outlet 20b.

[0059] Of course, in some other embodiments, the housing 10 may have a material outlet 20b and the screen 20 may have a material inlet 10b. The material outlet 20b is connected to the mounting cavity 10a, and the material inlet 10b is connected to the filtering cavity 20a, thereby achieving communication between the material inlet 10b and the material outlet 20b. In this embodiment, the material will enter the filtering cavity 20a of the screen 20 from the material inlet 10b, then enter the mounting cavity 10a of the housing 10 through the screen holes, and finally be discharged through the material outlet 20b.

[0060] In this application, the description will mainly focus on the case where the shell 10 has a material inlet 10b and the screen 20 has a material outlet 20b.

[0061] In this embodiment, as an example, the housing 10 is generally formed as a cylindrical structure with its axial direction parallel to the height direction, and the housing 10 is open along the height direction toward the grinding cylinder 200 to form a material inlet 10b.

[0062] The end of the housing 10 closest to the grinding cylinder 200 along the height direction is connected to the grinding cylinder 200. This connection can be direct or indirect through an intermediate structure. The specific connection method is not limited, such as welding, fastener connection, etc. Alternatively, at least a part of the housing 10 and the grinding cylinder 200 can form an integral structure.

[0063] The screen 20 is disposed within the mounting cavity 10a of the housing 10. The screen 20 has a filter cavity 20a, screen holes communicating with the filter cavity 20a, and a material outlet 20b communicating with the filter cavity 20a. The screen holes connect the filter cavity 20a and the mounting cavity 10a. Along the height direction of the grinder, the material outlet 20b is located on the top side of the material inlet 10b.

[0064] The specific structure of the screen 20 is not limited, as long as it can form the above-mentioned filter chamber 20a, screen holes and material outlet 20b. The specific aperture of the screen holes can be determined according to the desired particle size of the material, and there is no restriction on it.

[0065] In this embodiment, by configuring the discharge device 100 to include a housing 10 and a screen 20, the material can be screened by the screen 20 before being discharged, thereby helping to improve the grinding accuracy.

[0066] In some embodiments, specifically, the housing 10 has a material inlet 10b and the screen 20 has a material outlet 20b.

[0067] In some embodiments, refer to Figure 2 and Figure 3 The screen 20 is configured as a cylindrical structure with its axial direction parallel to its height direction. The screen 20 includes a top wall 212 and a bottom wall 213 distributed along the height direction, and a circumferential wall 211 connecting the top wall 212 and the bottom wall 213. The top wall 212 is located on the side away from the stop mechanism 30. The material outlet 20b is formed on the top wall 212. The screen holes are formed at least on the circumferential wall 211.

[0068] Here, the top wall 212 and the bottom wall 213 respectively cover the openings on both sides of the circumferential wall 211 along the height direction. The circumferential wall 211 and the top wall 212 and the bottom wall 213 can be connected by welding, bonding, snap-fitting, fastener connection or other means, or the circumferential wall 211 and the top wall 212 and the bottom wall 213 can be formed as an integral structure, and there is no limitation on this.

[0069] Screen holes are formed at least on the circumferential wall 211 of the screen 20, and in some embodiments, screen holes may also be formed on the bottom wall 213.

[0070] In this embodiment, the screen 20 with this structural form helps to increase the volume of the filter chamber 20a and the density of the screen holes, thereby improving the screening efficiency of the screen 20.

[0071] In the above embodiments, further referring to Figure 2 The discharge device 100 includes a discharge pipe 40 connected to the material outlet 20b. The discharge pipe 40 includes a first pipe section 41 and a second pipe section 42 arranged at an angle. The first pipe section 41 is connected to the top wall 212 and extends along the height direction. The end of the second pipe section 42 away from the first pipe section 41 extends out of the housing 10.

[0072] In this embodiment, by setting the above-mentioned discharge pipe 40, it will help to change the outflow direction of the material, which will help the operator to flexibly choose the receiving direction and reduce the difficulty of receiving the material. The specific angle between the first pipe section 41 and the second pipe section 42 of the discharge pipe 40 can be specifically determined by those skilled in the art according to actual usage requirements, and there is no limitation thereto. As an example, in an embodiment where the height direction is the height direction of the grinder, the central axis of the first pipe section 41 and the central axis of the second pipe section 42 are set at approximately a 90-degree angle.

[0073] In some embodiments, refer to Figure 1 and Figure 2The discharge device 100 also includes a stop mechanism 30, which is located on the bottom side of the screen 20 and connects the discharge port 200b and the material inlet 10b. The stop mechanism 30 is used to block the grinding media in the material. Taking the housing 10 having a material inlet 10b and the screen 20 having a material outlet 20b as an example, the stop mechanism 30 is specifically used to block the grinding media in the material from entering the mounting cavity 10a.

[0074] Taking a shell 10 having a material inlet 10b and a screen 20 having a material outlet 20b as an example, in actual use, the material will roughly follow... Figure 2 The material flows in the direction indicated by the middle arrow. Specifically, under the pressure difference between the inlet 200c, the outlet 200b, and the material outlet 20b, the material flowing to the outlet end of the grinding cylinder 200 will flow out from the outlet 200b and enter the mounting cavity 10a of the housing 10 via the stop mechanism 30 and the material inlet 10b. Then, the material with the required particle size will be able to pass through the sieve holes into the filter cavity 20a of the screen 20 and be discharged through the material outlet 20b.

[0075] The stop mechanism 30 is specifically used to prevent grinding media mixed in the material from entering the mounting cavity 10a. As an example, the stop mechanism 30 has one or more channels that allow material to pass through but prevent grinding media from passing through. The channels connect the discharge port 200b and the material inlet 10b. Specifically, the material can pass through the channels while the grinding media cannot pass through the channels by controlling the flow area of ​​the channels.

[0076] In this embodiment, a stop mechanism 30 is provided between the screen 20 and the discharge port 200b of the grinding cylinder 200. The stop mechanism 30 can block the grinding media in the material, thereby further reducing the probability of the grinding media contacting the screen 20 and causing wear, and thus improving the service life of the screen 20.

[0077] It should be noted that in some other embodiments, the discharge device 100 may not include the aforementioned stop mechanism 30, and the material inlet 10b of the discharge device 100 may be directly connected to the discharge port 200b of the grinding cylinder 200.

[0078] In some embodiments, refer to Figure 2 and Figure 4 The stop mechanism 30 includes a filter plate 31, the thickness direction of the filter plate 31 is parallel to the height direction, and the filter plate 31 has a material flow channel 31a that extends through the filter plate 31 along the height direction.

[0079] As an example, in the orthographic projection along the height direction, the projection of the filter plate 31 roughly coincides with the projection of the discharge port 200b, or the projection of the filter plate 31 extends beyond the projection of the discharge port 200b.

[0080] The filter plate 31 can be located inside or outside the discharge port 200b, and there is no restriction on this.

[0081] The filter plate 31 is connected to the grinding cylinder 200. The specific connection method is not limited, such as welding, bonding, snap-fitting, fastener connection, etc.

[0082] The filter plate 31 may have one or more material flow channels 31a. As mentioned above, the material can pass through the material flow channel 31a while the grinding media cannot pass through the material flow channel 31a by reasonably setting the flow area of ​​the material flow channel 31a (i.e., the area of ​​the cross section perpendicular to the material flow direction).

[0083] In this embodiment, the stop mechanism 30 with this structural form helps to simplify the structure of the discharge device 100 and reduce costs.

[0084] In some embodiments, refer to Figure 5 Along the direction closer to the screen 20, the flow area of ​​the material flow channel 31a increases.

[0085] As mentioned above, the flow area of ​​the material flow channel 31a refers to the area of ​​the cross section perpendicular to the material flow direction (i.e., the height direction of the grinder).

[0086] Here, the flow area of ​​the material flow channel 31a can be continuously increased from the end away from the screen 20 to the end closer to the screen 20, or it can be increased only in one or a few sections, while the flow area of ​​the rest remains roughly unchanged.

[0087] The increase in the circulation area of ​​logistics channels can be linear or stepwise, and there is no restriction on this.

[0088] It is understandable that although the material flow channel 31a is designed to prevent the passage of grinding media, the grinding media will also experience a certain degree of wear and tear during actual use, resulting in a reduction in volume. Therefore, the material flowing into the material flow channel 31a may still contain grinding media. In this embodiment, the flow area of ​​the material flow channel 31a is set to increase along the direction close to the screen 20 (that is, the actual flow direction of the material). In this way, the grinding media that has entered the material flow channel 31a can pass through the material flow channel 31a more smoothly, reducing the probability of the material flow channel 31a being blocked by the grinding media.

[0089] It should be noted that in some other embodiments, the flow area of ​​the material flow channel 31a along the height direction can also be set to remain approximately unchanged.

[0090] In some embodiments, refer to Figure 4 and Figure 5The filter plate 31 includes an annular body 311 and multiple baffles 312 arranged side by side and spaced apart. The two ends of the baffles 312 in the extending direction are connected to the annular body 311, and a material flow channel 31a is formed between adjacent baffles 312.

[0091] Here, the specific shape of the annular body 311 is not limited. As an example, in an embodiment where at least a portion of the filter plate 31 is disposed within the discharge port 200b, the annular body 311 can be fitted to the inner surface of the discharge port 200b. Of course, in embodiments where the filter plate 31 is disposed outside the discharge port 200b, the annular body 311 can be of any shape.

[0092] Here, the parallel arrangement of the retaining ribs 312 specifically means that the extension directions of each retaining rib 312 are roughly parallel. The connection method between the retaining ribs 312 and the annular body 311 is not limited, such as welding, bonding, snap-fitting, fastener connection, etc., or the retaining ribs 312 can form an integral structure with the annular body 311.

[0093] In this embodiment, the filter plate 31 with this structural form helps to increase the total area of ​​the material flow channel 31a, thereby increasing the material flow rate.

[0094] Furthermore, in this embodiment, reference is made to... Figure 4 and Figure 5 Along the arrangement direction of the baffle 312, the baffle 312 has a first guide surface 312a and a second guide surface 312b. In two adjacent baffles 312, the first guide surface 312a of one baffle 312 and the second guide surface 312b of the other baffle 312 are arranged opposite to each other. Along the direction close to the screen 20, the first guide surface 312a and the corresponding second guide surface 312b extend inclinedly away from each other, thereby increasing the flow area of ​​the material flow channel 31a along the direction close to the screen 20.

[0095] In some embodiments, refer to Figure 4 and Figure 5 At least a portion of the filter plate 31 is disposed within the discharge port 200b, and along the height direction, the surface of the filter plate 31 facing away from the screen 20 does not extend beyond the inner surface of the grinding cylinder 200.

[0096] Taking the discharge port 200b located on the top side of the grinding cylinder 200 as an example, the surface of the filter plate 31 facing away from the screen 20 is formed into an arc shape. It can be understood that the specific curvature of the arc shape of the filter plate 31 can be determined according to the curvature of the wall surface of the filter cylinder corresponding to the discharge port 200b. In some embodiments, specifically, the arc shape of the filter plate 31 is coplanar with the inner surface of the grinding cylinder 200.

[0097] In this embodiment, by setting the side surface of the filter plate 31 away from the screen 20 to not exceed the inner surface of the grinding cylinder 200, it helps to reduce the probability of wear between the filter plate 31 and the grinding media and materials in the grinding chamber 200a, and improve the service life of the filter plate 31.

[0098] In some embodiments, the discharge port 200b disposed on the top side of the filter plate 31 of the grinding cylinder 200 can be formed as an arc-shaped plate. In other words, both the surface of the filter plate 31 facing the screen 20 and the surface facing away from the screen 20 can be formed as arc-shaped surfaces. This allows the filter plate 31 to better fit the grinding cylinder 200, improving its positional stability and stopping performance.

[0099] In some embodiments, the annular body 311 has a stepped surface facing the grinding cylinder 200, and the stepped surface abuts against the outer surface of the grinding cylinder 200. This achieves a fixed connection between the filter plate 31 and the grinding cylinder 200. Here, the stepped surface and the outer surface of the grinding cylinder 200 can be fixed by welding, bonding, fasteners, or other connection methods. Alternatively, the stepped surface and the outer surface of the grinding cylinder 200 can simply abut against each other without a fixed connection; in this case, the positional stability of the filter plate 31 can be maintained by its own weight.

[0100] In some embodiments, refer to Figure 4 and Figure 5 The discharge port 200b is located on the top side of the grinding cylinder 200, and the material flow channel 31a extends along the circumference of the grinding cylinder 200.

[0101] Taking the filter plate 31, which includes an annular body 311 and baffle 312, as an example, the baffle 312 is configured to extend along the circumference of the grinding cylinder 200, thereby realizing that the material flow channel 31a extends along the circumference of the grinding cylinder 200.

[0102] As mentioned above, the grinding cylinder 200 may contain a grinding element 300. The grinding element 300 is configured to rotate around the central axis of the grinding cylinder 200. In this case, the material and grinding media within the grinding cylinder 200 will undergo circular motion under the centrifugal force provided by the grinding element 300. In this embodiment, the material flow channel 31a is configured to extend circumferentially along the grinding cylinder 200. This reduces the resistance of the filter plate 31 to the material, allowing the material to quickly pass through the media flow channel under centrifugal force. Furthermore, this configuration effectively reduces the impact of the grinding media within the grinding chamber 200a on the filter plate 31 (e.g., the impact on the baffle 312), thereby extending the service life of the filter plate 31.

[0103] In some embodiments, refer to Figure 2 The discharge device 100 also includes a connecting cylinder 50, which connects the grinding cylinder 200 and the housing 10.

[0104] Here, the connecting cylinder 50 is specifically formed as a cylindrical structure with its axial direction parallel to the height direction. The housing 10 and the connecting cylinder 50 can be connected by fasteners (e.g., flanges), or by welding, snap-fitting, etc., or they can be formed as an integral structure. The connecting cylinder 50 and the grinding cylinder 200 can also be connected by fasteners, welding, etc., or the connecting cylinder 50 and the grinding cylinder 200 can be formed as an integral structure. In some specific embodiments, the connecting cylinder 50 and the grinding cylinder 200 are formed as an integral structure, and the connecting cylinder 50 is connected to the housing 10 by a flange.

[0105] In this embodiment, by providing a connecting cylinder 50, the distance between the long stop mechanism 30 and the screen 20 along the height direction can be reduced. For the grinding media that has passed through the stop mechanism 30, when it moves towards the screen 20 inside the connecting cylinder 50, it will be affected by gravity, and the probability of it entering the mounting cavity 10a and contacting the screen 20 is low. Thus, the probability of wear between the grinding media and the screen 20 can be further reduced. On the other hand, in this embodiment, the connecting cylinder 50 can also serve as a transition between the housing 10 and the grinding cylinder 200, thereby reducing the difficulty of connecting the housing 10 and the grinding cylinder 200.

[0106] Of course, in some other embodiments, the connecting cylinder 50 may not be provided, and the housing 10 may be directly connected to the grinding cylinder 200.

[0107] In some embodiments, refer to Figure 2 The discharge device 100 also includes a liner 60, which covers the inner surface of the connecting cylinder 50.

[0108] Here, "the liner 60 covering the inner surface of the connecting cylinder 50" means that the liner 60 covers part or all of the inner surface of the connecting cylinder 50. As an example, the liner 60 has a cylindrical structure, and the outer surface of the liner 60 is fitted to the inner surface of the connecting cylinder 50.

[0109] In this embodiment, the liner 60 is mainly used to improve the wear resistance of the connecting cylinder 50. For highly viscous materials such as asphalt, it can also reduce the coefficient of friction and improve the material's throughput. Those skilled in the art can select wear-resistant materials to prepare the liner 60. The specific material can be determined based on the material actually being processed by the grinder and the grinding material used. For example, the material of the liner 60 can be a metallic material, such as cemented carbide (e.g., tungsten carbide, titanium carbide), powder metallurgy alloy (e.g., high wear-resistant aluminum alloy, iron-based powder metallurgy material), special steel, etc. Alternatively, the material of the liner 60 can be a non-metallic material, such as engineering plastics (e.g., modified nylon, polyoxymethylene, polyetheretherketone, polytetrafluoroethylene, etc.), ceramic materials (e.g., alumina, silicon nitride, etc.). It is understood that the aforementioned stop mechanism 30 can also be prepared using such materials.

[0110] In some embodiments, the liner 60 further covers the inner surface of the connection between the housing 10 and the connecting cylinder 50, thereby enabling the liner 60 to further improve the sealing performance between the housing 10 and the connecting cylinder 50.

[0111] In some embodiments, the connecting cylinder 50 is provided with an observation window (not shown in the figure). Here, the observation window specifically refers to a structure that can transmit light, and it is mainly used to observe the material flow within the connecting cylinder 50.

[0112] The specific structural form of the observation window is not limited. As an example, the observation window includes a window body and a blocking member disposed on the side of the window body opposite to the interior of the connecting cylinder 50. The blocking member is movably connected to the connecting cylinder 50, allowing it to move between a first position that blocks the window body and a second position that exposes the window body. When observation is needed, the operator can move the blocking member to the second position for observation, and after observation, move the blocking member back to the first position. Of course, in some embodiments, the observation window may only include the window body and not the blocking member.

[0113] The specific location of the observation window is not limited. As an example, the connecting cylinder 50 is provided with an observation window on at least one side of the radial direction of the grinding cylinder 200 (a direction that is perpendicular to both the axial direction of the grinding cylinder and the height direction of the grinding machine), so that the operator can easily approach and observe.

[0114] In this embodiment, by providing an observation window in the connecting cylinder 50, the operator can easily observe the material flow in the connecting cylinder 50 and / or the stop mechanism 30, enabling the operator to handle the blockage in a timely manner and reduce the impact.

[0115] As mentioned above, in some embodiments, a liner 60 is provided inside the connecting cylinder 50. In this embodiment, the liner 60 forms an observation area 60a at the position corresponding to the observation window. Here, the observation area 60a specifically refers to an area that can transmit light. As an example, the observation area 60a can be an area formed by a transparent material (the entire liner 60 can be formed by a transparent material, or the observation area 60a can be formed by a transparent material and the other areas of the liner 60 can be formed by a non-transparent material), or the observation area 60a can be an area formed by partially hollowing out the liner 60.

[0116] In some embodiments, refer to Figure 2 The discharge device 100 also includes a guide 70, which is used to apply centrifugal force to the material.

[0117] The specific structure of the guide 70 is not limited, as long as it can apply centrifugal force to the material.

[0118] In this embodiment, the guide 70 applies centrifugal force to the material, which helps to make the grinding media that is less likely to escape into the mounting cavity 10a undergo centrifugal motion, thereby further reducing the probability of the grinding media coming into contact with the screen 20.

[0119] In some embodiments, refer to Figure 6 The screen 20 is formed as a cylindrical structure with parallel axial height direction. The guide 70 includes a drive part 71 and a rotor 72. The drive part 71 is used to drive the rotor 72 to rotate around the central axis of the screen 20 in the mounting cavity 10a.

[0120] In this embodiment, the specific structure of the screen 20 can be referred to the description in the relevant section above, and will not be repeated here.

[0121] In this embodiment, the rotor 72 rotates within the mounting cavity 10a, and the rotation range is large, so the material will generate a strong centrifugal force during the movement of the rotor 72.

[0122] In some embodiments, refer to Figure 2 and Figure 7 The rotor 72 includes a plurality of disturbance arms 721 distributed circumferentially along the screen 20, and the disturbance arms 721 extend along the height direction.

[0123] It is understood that in this embodiment, a gap is formed between adjacent disturbance arms 721, and the material can pass through the gap between adjacent disturbance arms 721, thereby smoothly flowing from the filter chamber 20a of the screen 20 to the mounting chamber 10a.

[0124] As an example, the rotor 72 includes a transition plate 722 and disturbance arms 721. The transition plate 722 is disposed on the bottom side of the screen 20 and is used to connect to the drive unit 71. One end of each disturbance arm 721 along the height direction is connected to the transition plate 722. In some embodiments, the rotor 72 further includes a reinforcing ring 723, and the other end of each disturbance arm 721 along the height direction is connected to the reinforcing ring 723, thereby improving the structural strength of the disturbance arm 721.

[0125] In some embodiments, the aforementioned adapter plate 722 may further have a through hole extending through the adapter plate 722 along its thickness direction, thereby further reducing the obstruction of the material flow path by the rotor 72.

[0126] In some embodiments, the disturbance arm 721 can be rotatably connected to the aforementioned adapter plate 722 and reinforcing ring 723, allowing the disturbance arm 721 to rotate relative to the adapter plate 722 and reinforcing ring 723 about an axis in the height direction. In this embodiment, the disturbance arm 721 can both revolve and rotate, thereby achieving a better guiding effect.

[0127] In this embodiment, by including multiple disturbance arms 721 distributed circumferentially along the screen 20 in the rotor 72, it is helpful to further enhance the centrifugal force generated when the rotor 72 rotates around the central axis of the screen 20, thereby helping to further reduce the possibility of the grinding media coming into contact with the screen 20.

[0128] In some embodiments, refer to Figure 2 and Figure 3 The screen 20 includes an outer cylinder 21 and an inner cylinder 22 arranged coaxially. The outer cylinder 21 includes a top wall 212, a bottom wall 213, and a circumferential wall 211 connecting the top wall 212 and the bottom wall 213. The inner cylinder 22 forms openings in the top wall 212 and the bottom wall 213. The drive unit 71 includes a motor 711 and a rotating shaft 712 connected to the motor 711. The rotating shaft 712 passes through the inner cylinder 22. The rotor 72 is connected to one end of the rotating shaft 712 near the stop mechanism 30 along the height direction.

[0129] The specific structural forms of the top wall 212, bottom wall 213, and circumferential wall 211 can be referred to the descriptions in the relevant sections above, and will not be repeated here. The inner cylinder 22 penetrating the top wall 212 and bottom wall 213 can mean that the inner cylinder 22 forms an opening in the top wall 212 and / or bottom wall 213, or it can mean that the inner cylinder 22 extends out of the top wall 212 and / or bottom wall 213.

[0130] The motor 711 of the drive unit 71 can be located outside the housing 10. The rotating shaft 712 is connected to the output end of the motor 711. The rotating shaft 712 extends into the housing 10 and extends through the inner cylinder 22 to the side of the screen 20 near the stop mechanism 30 in the height direction, and then connects to the rotor 72, for example, to the adapter plate 722 of the rotor 72 mentioned above.

[0131] In some embodiments, as mentioned above, the axial direction of the grinding cylinder 200 is perpendicular to the height direction. The grinding machine includes a grinding element 300 disposed within the grinding chamber 200a. The grinding element 300 is configured to rotate unidirectionally about the central axis of the grinding cylinder 200. In this embodiment, refer to... Figure 7 Along the rotation direction of the grinding workpiece 300 (in the direction indicated by the arrow in the figure), the geometric center of the discharge port 200b is located downstream of the reference surface.

[0132] Here, the reference plane is parallel to the height direction of the grinder and the central axis of the grinding cylinder 200 is located within the reference plane. In other words, the reference plane is a vertical plane that bisects the grinding chamber 200a.

[0133] It is understood that the grinding element 300 will drive the material and grinding media to make circular motion during the rotation process. In this embodiment, at least a part of the discharge port 200b is set downstream of the reference surface along the rotation direction. In this way, when the grinding media approaches the discharge port 200b, there will be a downward force, which can reduce the probability of the grinding media entering the discharge device 100, thereby reducing the probability of wear between the grinding media and the screen 20.

[0134] As an example, the geometric center of the discharge port 200b is located in the plane where the reference plane is located after rotating 45° in the direction of rotation.

[0135] Of course, in some other embodiments, the geometric center of the discharge port 200b may also be set on the reference surface or upstream of the reference surface along the rotation direction.

[0136] The second aspect of this application provides a discharge device 100, which is the discharge device 100 in the grinding mill described in any of the embodiments above.

[0137] The discharge device of this application embodiment has all the advantages of the grinding machine described in any of the above embodiments, and will not be repeated here.

[0138] In the description of this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine different embodiments or examples described in this application, as well as features of different embodiments or examples.

[0139] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A grinder characterized by, The grinding mill includes: A grinding cylinder has a grinding chamber and a discharge port communicating with the grinding chamber, wherein the axial direction of the grinding cylinder is perpendicular to the height direction of the grinding machine; The discharge device has a material inlet and a material outlet, the material inlet is connected to the discharge outlet, and the material outlet is connected to the material inlet and is disposed on the top side of the material inlet.

2. The grinding machine according to claim 1, characterized in that, The discharge device includes: The housing has a mounting cavity; A screen is disposed within the mounting cavity. The screen has a filter chamber and screen holes communicating with the filter chamber. The screen holes communicate with the filter chamber and the mounting cavity. One of the housing and the screen has the material inlet, and the other has the material outlet.

3. The grinder of claim 2, wherein, The housing has the material inlet, and the screen has the material outlet.

4. The grinder of claim 3, wherein, The screen is a cylindrical structure with its axial direction parallel to the height direction. The screen includes a top wall, a bottom wall, and a circumferential wall connecting the top wall and the bottom wall. The material outlet is formed in the top wall, and the screen holes are formed at least in the circumferential wall.

5. The grinder of claim 4, wherein, The discharge device includes a discharge pipe connected to the material outlet. The discharge pipe includes a first pipe section and a second pipe section arranged at an angle. The first pipe section is connected to the top wall and extends along the height direction. The end of the second pipe section away from the first pipe section extends out of the housing.

6. The grinder of claim 2, wherein, The discharge device includes a stop mechanism disposed on the bottom side of the screen and connected to the discharge port and the material inlet. The stop mechanism is used to block the grinding media in the material.

7. The grinder of claim 6, wherein, The stop mechanism includes a filter plate, the thickness direction of which is parallel to the height direction, and the filter plate has a material flow channel that extends through the filter plate along the height direction.

8. The grinder of claim 7, wherein, Along the direction closer to the screen, the flow area of ​​the material channel increases; and / or The filter plate includes an annular body and multiple parallel and spaced-apart baffles. The opposite ends of each baffle in its extending direction are connected to the annular body, and a material flow channel is formed between adjacent baffles; and / or At least a portion of the filter plate is disposed within the discharge port, and along the height direction, the side of the filter plate facing away from the screen does not extend beyond the inner surface of the grinding cylinder.

9. The grinder of claim 2, wherein, The discharge device also includes a connecting cylinder that connects the grinding cylinder and the housing.

10. The grinder of claim 9, wherein, The discharge device further includes a liner covering the inner surface of the connecting cylinder; and / or The connecting cylinder is equipped with an observation window.

11. The grinder of claim 2, wherein, The discharge device also includes a guide member for applying centrifugal force to the material.

12. The grinder of claim 11, wherein, The screen is formed as a cylindrical structure with its axial direction parallel to the height direction. The guide includes a drive unit and a rotor. The drive unit is used to drive the rotor to rotate around the central axis of the screen within the mounting cavity.

13. The grinder of claim 12, wherein, The rotor includes a plurality of disturbance arms distributed circumferentially along the screen and extending along the height direction.

14. The grinder of claim 12, wherein, The screen includes an outer cylinder and an inner cylinder arranged coaxially. The outer cylinder includes a top wall, a bottom wall, and a circumferential wall connecting the top wall and the bottom wall. The inner cylinder penetrates the top wall and the bottom wall. The drive unit includes a motor and a rotating shaft connected to the motor. The rotating shaft passes through the inner cylinder, and the rotor is connected to the bottom end of the rotating shaft.

15. The grinder of any one of claims 1-14, wherein, The grinding machine includes a grinding element disposed within the grinding chamber. The grinding element is configured to rotate unidirectionally about the central axis of the grinding cylinder. Along the rotation direction of the grinding element, the geometric center of the discharge port is located downstream of a reference surface. The reference surface is parallel to the height direction of the grinding machine, and the central axis of the grinding cylinder is located within the reference surface.

16. A discharge device characterized by The discharge device is the discharge device of the grinding mill according to any one of claims 1-15.

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