Grid plate and grinding machine

Abstract

The embodiment of the invention provides a grid plate and a grinding miller, the grid plate is used for being matched with a discharge hole of a grinding cylinder, the grinding cylinder is provided with a grinding cavity communicated with the discharge hole, and the grid plate comprises a fixing part and a plurality of grates. The fixing part is used for being installed in the discharging hole, and the fixing part is provided with an installation space. The perforated strainers are arranged in the mounting space at intervals, so that a material passing channel is formed between every two adjacent perforated strainers, and the cross sectional area of at least partial area of each material passing channel is gradually reduced in the direction away from the grinding cavity and close to the grinding cavity. According to the grid plate, on one hand, the grinding medium can be prevented from escaping from the grinding cavity, and on the other hand, grinding medium accumulation can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of material grinding, and in particular to a grate plate and a grinder. 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] During operation, a grate plate is installed to prevent the grinding media from escaping the grinding chamber. However, during the grinding process, some of the grinding media in the grinding cylinder inevitably passes through the grate plate. Under the influence of gravity, the grinding media accumulates on the grate plate. This accumulation phenomenon seriously affects the discharge efficiency of the grinder and causes poor discharge. Summary of the Invention

[0004] In view of this, the main purpose of the embodiments of the present application is to provide a grate plate and a grinding cylinder that can reduce the accumulation of grinding media.

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

[0006] The embodiment of the present application provides a grate plate, which is used to cooperate with the discharge hole of a grinding cylinder, wherein the grinding cylinder has a grinding cavity connected to the discharge hole, and the grate plate includes:

[0007] A fixing portion, the fixing portion being used to be installed in the discharge hole, and the fixing portion having an installation space;

[0008] A plurality of grates are arranged at intervals in the installation space so that a material transfer channel is formed between adjacent grates, and the cross-sectional area of ​​at least a portion of the material transfer channel gradually decreases along the direction away from the grinding chamber to the direction close to the grinding chamber.

[0009] In one embodiment, the cross-sectional area of ​​at least one end of the grate away from the grinding chamber gradually increases along the direction away from the grinding chamber to closer to the grinding chamber.

[0010] In one embodiment, the grate has a first guide surface and a second guide surface on opposite sides along the spacing direction, respectively, the first guide surface and the second guide surface are in contact with each other on the side facing away from the grinding chamber, and along the direction approaching the grinding chamber, the first guide surface and the second guide surface extend in a direction away from each other.

[0011] In one embodiment, the grate further has a third guide surface and a fourth guide surface, the third guide surface is located on the side of the first guide surface close to the grinding chamber, and the fourth guide surface is located on the side of the second guide surface close to the grinding chamber, and the third guide surface and the fourth guide surface of two adjacent grates are parallel and opposite to each other.

[0012] In one embodiment, the grate plate is arc-shaped, and the curvature of the grate plate is the same as the curvature of the wall of the grinding cylinder.

[0013] In one embodiment, the grates are arranged at intervals along the extension direction of the grinding cylinder.

[0014] In one embodiment, on a side of the fixing portion close to the grinding chamber, a portion of the outer edge of the fixing portion along the circumferential direction is recessed to form a mounting step, and the mounting step is used to abut against the outer end surface of the barrel wall of the discharge hole.

[0015] The installation step is arc-shaped, and the curvature of the installation step is the same as the curvature of the barrel wall of the grinding barrel.

[0016] On the other hand, an embodiment of the present application provides a grinder, comprising a grinding cylinder, a discharging device and a grate plate as described above, wherein the cylinder wall of the grinding cylinder has a discharging hole, the grate plate is arranged in the discharging hole, and the discharging device is connected to the grinding chamber through the discharging hole.

[0017] In one embodiment, the discharge hole is located at the top of the grinding cylinder.

[0018] The embodiment of the present application provides a grate plate and a grinder, wherein the grate plate is used to cooperate with the discharge hole of a grinding cylinder, and the grinding cylinder has a grinding chamber connected to the discharge hole. The grate plate includes a fixed portion and a plurality of grates. The fixed portion is used to be installed in the discharge hole, and the fixed portion has an installation space. The grates are spaced apart in the installation space so that a feed channel is formed between adjacent grates, and the cross-sectional area of ​​at least a portion of the feed channel gradually decreases as it moves away from the grinding chamber and toward the grinding chamber. Thus, by gradually reducing the cross-sectional area of ​​the feed channel formed between adjacent grates as it moves away from the grinding chamber and toward the grinding chamber, on the one hand, it is possible to prevent the grinding medium from escaping the grinding chamber, and only materials that meet the specified particle size standard can pass through smoothly. Materials that do not meet the standard remain in the grinding chamber and continue to be ground due to the obstruction of the channel, 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 falls back onto the grate plate under the action of gravity. The feed channel can guide the grinding media on the grate plate back into the grinding cylinder, which helps prevent the grinding media from accumulating and clogging in the feed channel, thereby ensuring the smooth flow of the grate plate and improving the grinding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a grate plate according to an embodiment of the present application;

[0020] Figure 2 for Figure 1 A structural diagram of the middle grate plate from another perspective;

[0021] Figure 3 for Figure 1 Cross-section of the middle grate plate;

[0022] Figure 4 This is a schematic structural diagram of a grinding machine according to another embodiment of the present application;

[0023] Figure 5 for Figure 4 Schematic diagram of the structure of the grinding machine from another perspective.

[0024] Description of Reference Numerals

[0025] 10. Grate plate; 11. Fixing part; 111. Mounting step; 12. Grate; 121. First guide surface; 122. Second guide surface; 123. Third guide surface; 124. Fourth guide surface; 10a. Feed channel; 20. Grinding cylinder; 20a. Discharge hole; 20b. Grinding chamber; 30. Discharge device. DETAILED DESCRIPTION

[0026] 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.

[0027] 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.

[0028] 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.

[0029] An embodiment of the present application provides a grate plate 10, see Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The grate plate 10 is used to cooperate with the discharge hole 20 a of the grinding cylinder 20 . The grinding cylinder 20 has a grinding cavity 20 b connected to the discharge hole 20 a . The grate plate 10 includes a fixing portion 11 and a plurality of grates 12 .

[0030] The fixing portion 11 is used to be installed in the discharge hole 20 a , and the fixing portion 11 has an installation space.

[0031] The grates 12 are spaced apart in the installation space to form a feed channel 10a between adjacent grates 12. The cross-sectional area of ​​at least part of the feed channel 10a gradually decreases from away from the grinding chamber 20b to closer to the grinding chamber 20b.

[0032] Specifically, the grate plate 10 refers to a component installed at the discharge hole 20a of the grinder, which plays the role of controlling the passage of materials and screening the materials.

[0033] The grinding cylinder 20 refers to a component in the grinding machine for accommodating and grinding the material to be ground, and has a grinding chamber 20b inside.

[0034] The discharge hole 20 a refers to a channel through which the ground material is discharged from the grinding cylinder 20 .

[0035] The fixing portion 11 is a part of the grate plate 10 and is used to fix the grate plate 10 at the discharge hole 20 a.

[0036] The structure and shape of the fixing portion 11 are not limited, as long as it can be disposed in the discharge hole 20a.

[0037] For example, the fixing portion 11 is approximately annular, and the space inside the fixing portion 11 is the installation space.

[0038] A plurality of grates 12 are spaced apart in the installation space to form a material transfer channel 10a.

[0039] The extending direction of the grate 12 is not limited.

[0040] Exemplarily, the extending direction of the grate 12 is parallel to the extending direction of the grinding cylinder 20 .

[0041] Exemplarily, the extending direction of the grate 12 is perpendicular to the extending direction of the grinding cylinder 20 .

[0042] Exemplarily, the extending direction of a portion of the grates 12 is parallel to the extending direction of the grinding cylinder 20 , and the extending direction of a portion of the grates 12 is perpendicular to the extending direction of the grinding cylinder 20 .

[0043] For example, the extension direction of the grate 12 and the extension direction of the grinding cylinder 20 form a certain angle.

[0044] The directions in which the grates 12 are spaced apart are not limited.

[0045] For example, the direction in which the grates 12 are spaced apart is perpendicular to the extending direction of the grinding cylinder 20 .

[0046] For example, the direction in which the grates 12 are spaced apart from each other forms a certain angle with the extending direction of the grinding cylinder 20 .

[0047] For example, the grates 12 are spaced apart along the extension direction of the grinding cylinder 20. Thus, on the one hand, the material can be screened more effectively, and on the other hand, the phenomenon of material flowing back from the discharge port into the grinding chamber 20b can be reduced, making the material flow smoother and improving the grinding efficiency.

[0048] On the one hand, the material passing channel 10a can screen the ground material so that only the material that has reached a certain particle size standard can pass through smoothly. On the other hand, the grinding media that has fallen back onto the grate plate 10 can be guided to reenter the grinding chamber 20b.

[0049] The cross-sectional area of ​​at least part of the feed channel 10a gradually decreases, which means that along the direction away from the grinding chamber 20b to the direction close to the grinding chamber 20b, the cross-sectional area of ​​the entire feed channel 10a gradually decreases, or the cross-sectional area of ​​part of the feed channel 10a away from the grinding chamber 20b gradually decreases.

[0050] The manner in which the cross section of the feed channel 10a is reduced is not limited.

[0051] Exemplarily, along the direction away from the grinding chamber 20b to the direction close to the grinding chamber 20b, the cross-sectional area of ​​at least one end of the grate 12 away from the grinding chamber 20b gradually increases.

[0052] Specifically, the cross-sectional area refers to the cross-sectional area of ​​the grate 12 perpendicular to the first direction, wherein the first direction refers to the direction from away from the grinding chamber 20b to close to the grinding chamber 20b.

[0053] The cross-sectional area of ​​the grate 12 may be increased in a linear or nonlinear manner.

[0054] The grate plate 10 of the present embodiment is configured to engage with the discharge hole 20a of the grinding cylinder 20. The grinding cylinder 20 has a grinding chamber 20b communicating with the discharge hole 20a. The grate plate 10 includes a fixing portion 11 and a plurality of grates 12. The fixing portion 11 is configured to be mounted within the discharge hole 20a and has a mounting space. The grates 12 are spaced apart within the mounting space to form a feed channel 10a between adjacent grates 12. The cross-sectional area of ​​at least a portion of the feed channel 10a gradually decreases as the cross-section moves away from the grinding chamber 20b and toward the grinding chamber 20b. Thus, by gradually reducing the cross-sectional area of ​​the feed channel 10a formed between adjacent grates 12 in the direction away from the grinding chamber 20b and closer to the grinding chamber 20b, on the one hand, it can prevent the grinding medium from escaping the grinding chamber, and only materials that meet the specified particle size standards can pass through smoothly. Materials that do not meet the standards are blocked in the channel and remain in the grinding chamber 20b for further grinding, thereby ensuring that the final output particle size is uniform and meets the requirements, thereby improving product quality. On the other hand, during the grinding process, some of the grinding media that passes through the grate plate 10 falls back onto the grate plate 10 under the action of gravity. The feed channel 10a can guide the grinding media on the grate plate 10 back into the grinding cylinder 20, helping to prevent the grinding media from accumulating and clogging in the feed channel 10a, thereby ensuring the smooth flow of the grate plate 10 and improving the grinding effect.

[0055] In one embodiment, please refer to Figure 3 The grate 12 has a first guide surface 121 and a second guide surface 122 on opposite sides of the grate plate 12. The first and second guide surfaces 121, 122 contact each other on the sides facing away from the grinding chamber 20b. As they approach the grinding chamber 20b, the first and second guide surfaces 121, 122 extend away from each other. Thus, the first and second guide surfaces 121, 122 guide the grinding media that has fallen back onto the grate plate 10 back into the grinding chamber 20b, preventing the grinding media from accumulating on the sides and clogging the feed channel 10a of the grate plate 10.

[0056] Specifically, the first guide surface 121 and the second guide surface 122 refer to surfaces on the grate 12 for guiding the grinding media that fall back onto the grate plate 10 to re-enter the grinding chamber 20 b.

[0057] Along the spacing direction of the grate 12 , the first guide surface 121 and the second guide surface 122 are provided on opposite sides of the grate 12 .

[0058] The first guide surface 121 and the second guide surface 122 contact each other on one side away from the grinding chamber 20b, and extend away from each other on the other side. As a result, the cross-sectional area of ​​the material transfer channel 10a formed by adjacent grates 12 gradually decreases along the direction away from the grinding chamber 20b to the direction close to the grinding chamber 20b, which is conducive to guiding the grinding media that falls back on the grate plate 10 to re-enter the grinding chamber 20b.

[0059] The shape of the first guide surface 121 is not limited.

[0060] For example, the first guide surface 121 may be a plane, an arc surface, or other shapes.

[0061] The shape of the second guide surface 122 is not limited.

[0062] For example, the second guide surface 122 may be a plane, a curved surface, or other shapes.

[0063] The extension angle and extension length of the first guide surface 121 and the second guide surface 122 are not limited, as long as they can guide the grinding media back into the grinding cylinder 20 .

[0064] In one embodiment, please refer to Figure 3 The grate 12 also has a third guide surface 123 and a fourth guide surface 124. The third guide surface 123 is located on the side of the first guide surface 121 closer to the grinding chamber 20b, and the fourth guide surface 124 is located on the side of the second guide surface 122 closer to the grinding chamber 20b. The third guide surface 123 and the fourth guide surface 124 of two adjacent grates 12 are parallel and opposite to each other. This allows for more orderly movement of the material and grinding media within the feed channel 10a, thereby improving grinding efficiency.

[0065] Specifically, the first guide surface 121 and the third guide surface 123 are located on one side of the grate 12, and the second guide surface 122 and the fourth guide surface 124 are located on the other side of the grate 12. The first guide surface 121 and the third guide surface 123 of adjacent grates 12 are respectively arranged opposite to the second guide surface 122 and the fourth guide surface 124, thereby forming a material transfer channel 10a, which helps to guide the flow of materials and grinding media more accurately.

[0066] The shape of the third guide surface 123 is not limited.

[0067] For example, the third guide surface 123 is a plane.

[0068] The shape of the fourth guide surface 124 is not limited.

[0069] For example, the fourth guide surface 124 is a plane.

[0070] In one embodiment, please refer to Figure 3 、 Figure 4 and Figure 5 The grate plate 10 is curved, and its curvature is the same as that of the wall of the grinding cylinder 20. This allows the grate plate 10 to fit tightly against the wall of the grinding cylinder 20, reducing the risk of material stagnation or leakage in the gap between the grate plate 10 and the grinding cylinder 20, improving material flow efficiency and, in turn, enhancing grinding efficiency. Furthermore, it enhances the stability of the grate plate 10 installation.

[0071] Specifically, the degree of curvature of the grate plate 10 is the same as the degree of curvature of the wall of the grinding cylinder 20, meaning that the curvature of the grate plate 10 and the curvature of the wall of the grinding cylinder 20 form an isocircular relationship. In other words, the circle on which the arc of the grate plate 10 lies isocircular with the circle on which the arc of the wall of the grinding cylinder 20 lies, i.e., the radius of the circular surfaces of the grate plate 10 and the grinding cylinder 20 is the same.

[0072] In one embodiment, please refer to Figure 3 The spacing between adjacent grates 12 is greater than or equal to twice the diameter of the grinding medium and less than or equal to four times the diameter of the grinding medium. For example, the spacing between adjacent grates 12 is two, three, or four times the diameter of the grinding medium. Maintaining the spacing between adjacent grates 12 within the above range facilitates the passage of material and helps the grinding medium on the grate plate 10 return to the grinding cylinder 20.

[0073] In one embodiment, please refer to Figure 2 and Figure 4 On the side of the fixing portion 11 near the grinding chamber 20b, a portion of the outer circumferential edge of the fixing portion 11 is recessed to form a mounting step 111. The mounting step 111 is configured to abut against the outer end surface of the wall of the discharge hole 20a. This improves the stability of the grate plate 10 and prevents it from loosening during the grinding process.

[0074] Specifically, the dimensions of the mounting step 111 are compatible with the dimensions of the discharge hole 20a. That is, when the mounting step 111 abuts the outer end surface of the wall of the discharge hole 20a, the portion of the fixing portion 11 near the grinding chamber 20b mates with the wall of the discharge hole 20a. This reduces the risk of material stagnation or leakage in the gap between the grate plate 10 and the discharge hole 20a.

[0075] In one embodiment, the mounting step 111 is curved, and the degree of curvature of the mounting step 111 is the same as the curvature of the wall of the grinding cylinder 20. This allows the mounting step 111 to fit tightly against the wall of the grinding cylinder 20, reducing the risk of material stagnation or leakage in the gap between the mounting step 111 and the grinding cylinder 20, improving material flow efficiency and, consequently, grinding efficiency. Furthermore, it enhances the stability of the grate plate 10.

[0076] Another embodiment of the present application provides a grinding machine. Figure 4 The grinding machine includes a grinding cylinder 20, a discharge device 30, and a grate plate 10 according to any of the above-described embodiments. The wall of the grinding cylinder 20 defines a discharge hole 20a, the grate plate 10 is disposed within the discharge hole 20a, and the discharge device 30 communicates with the grinding chamber 20b through the discharge hole 20a. This reduces the risk of accumulation of grinding media on the grate plate 10, thereby clogging the grate plate 10's feed passage 10a.

[0077] In one embodiment, please refer to Figure 4 , the discharge hole 20a is located at the top of the grinding cylinder 20. Thus, by arranging the discharge hole 20a at the top of the grinding cylinder 20, the impact force of the material on the screen when discharged is reduced, thereby extending the service life of the screen and reducing the replacement frequency of the screen.

[0078] Specifically, the discharge hole 20a is located at the top of the grinding cylinder 20, which means that the extension direction of the grinding cylinder 20 is horizontal, and the discharge hole 20a is located on the cylinder wall at the top of the grinding cylinder 20. In other words, the discharge mode of the grinding machine is a top discharge mode.

[0079] 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.

[0080] 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 grate plate, characterized in that: The grate plate is used to cooperate with the discharge hole of the grinding cylinder, and the grinding cylinder has a grinding cavity connected to the discharge hole. The grate plate includes: A fixing portion, the fixing portion being used to be installed in the discharge hole, and the fixing portion having an installation space; A plurality of grates are arranged at intervals in the installation space so that a material transfer channel is formed between adjacent grates, and the cross-sectional area of ​​at least a portion of the material transfer channel gradually decreases along the direction away from the grinding chamber to the direction close to the grinding chamber.

2. The grate plate according to claim 1, characterized in that: Along the direction away from the grinding chamber to approaching the grinding chamber, the cross-sectional area of ​​at least one end of the grate away from the grinding chamber gradually increases.

3. The grate plate according to claim 2, characterized in that: The grate has a first guide surface and a second guide surface on opposite sides along the spacing direction, respectively. The first guide surface and the second guide surface are in contact with each other on the side facing away from the grinding chamber, and along the direction approaching the grinding chamber, the first guide surface and the second guide surface extend in a direction away from each other.

4. The grate plate according to claim 3, characterized in that: The grate also has a third guide surface and a fourth guide surface. The third guide surface is located on the side of the first guide surface close to the grinding chamber, and the fourth guide surface is located on the side of the second guide surface close to the grinding chamber. The third guide surface and the fourth guide surface of two adjacent grates are parallel and opposite to each other.

5. The grate plate according to claim 1, characterized in that: The grate plate is arc-shaped, and the curvature of the grate plate is the same as the curvature of the cylinder wall of the grinding cylinder.

6. The grate plate according to any one of claims 1 to 5, characterized in that: The grates are arranged at intervals along the extending direction of the grinding cylinder.

7. The grate plate according to any one of claims 1 to 5, characterized in that: On a side of the fixing portion close to the grinding chamber, a portion of the outer edge of the fixing portion along the circumferential direction is recessed to form a mounting step, and the mounting step is used to abut against the outer end surface of the barrel wall of the discharge hole.

8. The grate plate according to claim 7, characterized in that: The installation step is arc-shaped, and the curvature of the installation step is the same as the curvature of the barrel wall of the grinding barrel.

9. A grinding machine, characterized in that: It comprises a grinding cylinder, a discharging device and a grate plate according to any one of claims 1 to 8, wherein the wall of the grinding cylinder has a discharging hole, the grate plate is arranged in the discharging hole, and the discharging device is connected to the grinding chamber through the discharging hole.

10. The grinding machine according to claim 9, characterized in that The discharge hole is located at the top of the grinding cylinder.

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