Vertical grinder

Abstract

The vertical grinder provided by the embodiment of the application has only two screen meshes, and the number of the screen meshes is less than that in the prior art. In the process of disassembling and assembling the screen meshes, only two oppositely arranged screen meshes need to be disassembled and assembled, and the process is relatively simple and convenient.

Description

Technical Field

[0001] This application relates to the field of grinding equipment technology, and more particularly to a vertical grinding machine. Background Technology

[0002] In the prior art, vertical grinders have guide holes on the partition wall of the cylinder, and each guide hole is equipped with a screen. However, the screens of existing vertical grinders are difficult to disassemble and install, and are not convenient to disassemble and install. Summary of the Invention

[0003] In view of this, the present application aims to provide a vertical grinding machine to make the disassembly and assembly of the screen more convenient.

[0004] To achieve the above objectives, embodiments of this application provide a vertical grinding machine, comprising:

[0005] A grinding cylinder includes a cylinder body and a partition wall formed within the cylinder body, the partition wall dividing the cylinder body into a grinding chamber and a flow guiding chamber, the flow guiding chamber surrounding the upper outer periphery of the grinding chamber, and a flow guiding hole formed on the partition wall communicating between the grinding chamber and the flow guiding chamber; and

[0006] Two screens are arranged opposite each other, covering the flow guide holes.

[0007] In one embodiment, the screen includes connecting posts and stiffening plates, the connecting posts and stiffening plates being cross-connected to form screen holes, and both the connecting posts and the stiffening plates covering the guide holes.

[0008] In one embodiment, the screen further includes a separator and a clamping member. The clamping member is provided at both ends of the connecting column. The stiffener and the separator are both disposed between the clamping members at both ends. The separator is located between two adjacent stiffeners. The separator and the stiffener are both movable along the axial direction of the connecting column. The clamping member abuts against the stiffener to press the stiffener and the separator together.

[0009] In one embodiment, the screen further includes an mounting ring, the connecting post and the stiffening plate are both disposed within the mounting ring, the mounting ring is connected to the connecting post and the stiffening plate respectively, and the mounting ring is connected to the partition wall.

[0010] In one embodiment, a discharge port is formed on the cylinder, and the guide hole is aligned with the discharge port radially along the cylinder.

[0011] In one embodiment, an inspection port is also formed on the cylinder, and the inspection port is arranged opposite to the discharge port.

[0012] In one embodiment, a groove is formed on the partition wall and disposed at the edge of the flow guide hole, the groove being configured to partially accommodate the screen.

[0013] In one embodiment, the groove opening is away from the grinding chamber.

[0014] In one embodiment, the grinding cylinder further includes a cover plate disposed at the top of the cylinder body.

[0015] In one embodiment, the cover plate includes a first cover plate and a second cover plate connected to each other, the second cover plate surrounding the first cover plate, the first cover plate covering the grinding chamber, and the second cover plate covering the flow guiding chamber.

[0016] In one embodiment, a discharge port is formed on the cylinder body. The cylinder body includes a first cylinder wall, a second cylinder wall, and a third cylinder wall. A partition wall is disposed at the top of the first cylinder wall. The second cylinder wall and the third cylinder wall are both surrounding the partition wall. The second cylinder wall is connected to the first cylinder wall and the third cylinder wall respectively. The flow guiding cavity is located between the partition wall and the third cylinder wall. The first cylinder wall and the partition wall form the grinding cavity. The discharge port is formed on the second cylinder wall and / or the third cylinder wall.

[0017] The second cylinder wall gradually slopes towards the bottom of the first cylinder wall on the side facing the discharge port.

[0018] The vertical grinder of this application embodiment uses only two screens, which is less than the number of screens in the prior art. In the process of disassembling and assembling the screens, only the two screens arranged opposite each other need to be disassembled and assembled, making the disassembly and assembly process simple and convenient. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a vertical grinding machine according to one embodiment of this application;

[0020] Figure 2 for Figure 1 Sectional view at position AA in the middle;

[0021] Figure 3 This is a schematic diagram of the structure of a screen in one embodiment of this application;

[0022] Figure 4 In one embodiment of this application Figure 3 The cross-sectional view at location BB shows the cross-connecting columns, stiffening plates, and separators between adjacent stiffening plates. The clamping members are not shown in the figure.

[0023] Figure 5In one embodiment of this application Figure 3 The cross-sectional view at position BB shows the pressure block in the clamping member, but the bolts in the clamping member are not shown in the figure.

[0024] Figure 6 In one embodiment of this application Figure 3 The cross-sectional view at position BB shows the mounting ring, but the clamping element is not shown.

[0025] Figure 7 for Figure 6 A cross-sectional view at position CC shown;

[0026] Figure 8 This is a schematic diagram of the assembly of the screen and the partition wall;

[0027] Figure 9 for Figure 8 An enlarged view at position D in the middle, which exaggerates the gap between the mounting ring and the groove.

[0028] Explanation of reference numerals in the attached drawings: Grinding cylinder 1; Cylinder body 11; Spacer wall 111; Guide hole 1111; Groove 1112; Grinding chamber 112; Guide chamber 113; Discharge port 114; Inspection port 115; First cylinder wall 116; Second cylinder wall 117; Third cylinder wall 118; Cover plate 12; First cover plate 121; Second cover plate 122; Screen 2; Connecting column 21; Rib 22; Separator 23; Anchoring component 24; Mounting ring 25; Stirring device 3. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed descriptions in the specific implementation should be understood as explanations of the purpose of this application and should not be regarded as undue limitations on this application.

[0030] In the description of this application, "upper," "lower," "top," "bottom," orientation, or positional relationship are based on the appendix. Figure 1 The orientations or positional relationships shown are intended 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, and therefore should not be construed as a limitation of this application.

[0031] As part of the inventive concept of this application, before describing the embodiments of this application, it is necessary to analyze the reasons why the screen of the existing vertical grinding machine is not easy to disassemble and assemble, and to derive the technical solution of the embodiments of this application through reasonable analysis.

[0032] The existing grinding machine has eight guide holes on the partition wall of the cylinder, and each guide hole is covered with a screen, for a total of eight screens spaced apart. Due to the large number of screens, each screen needs to be disassembled and reassembled during the screen assembly and disassembly process, which is cumbersome, labor-intensive, and inconvenient.

[0033] Therefore, this application provides a vertical grinding machine. Please refer to [link to relevant documentation]. Figure 1 and Figure 2 The system includes a grinding cylinder 1 and a screen 2. The grinding cylinder 1 includes a cylinder body 11 and a partition wall 111 formed inside the cylinder body 11. The partition wall 111 divides the inside of the cylinder body 11 into a grinding chamber 112 and a flow guiding chamber 113. The flow guiding chamber 113 surrounds the upper outer periphery of the grinding chamber 112. The partition wall 111 has flow guiding holes 1111 that connect the grinding chamber 112 and the flow guiding chamber 113. The screen 2 covers the flow guiding holes 1111. There are two screens 2, and the two screens 2 are arranged opposite to each other.

[0034] The material enters the grinding chamber 112 of the grinder for stirring and grinding. After stirring and grinding, the material enters the guide chamber 113 through the guide hole 1111 and the screen 2 covering the guide hole 1111.

[0035] The vertical grinder of this application embodiment uses only two screens 2. Compared with the eight screens 2 arranged at intervals in the prior art, the number of screens 2 in this application embodiment is less than that in the prior art. In the process of disassembling and assembling the screens 2, the vertical grinder of this application embodiment only needs to disassemble and assemble the two screens 2 that are arranged opposite each other, and the disassembly and assembly process is relatively simple and convenient.

[0036] It is understandable that the screen 2 can be installed on the partition wall 111 using pins or bolts. Disassembling the screen 2 requires loosening the pins or bolts, while installing it requires tightening them. Existing vertical grinders have eight screens 2 connected to the partition wall 111, resulting in a large number of pins or bolts, leading to a heavy workload and inconvenience. The vertical grinder of this embodiment uses a structure with two screens 2 arranged opposite each other, reducing the number of pins or bolts that need to be removed during screen 2 assembly and disassembly, thus simplifying the process.

[0037] Understandably, since the screens 2 are arranged opposite each other, and the guide holes 1111 are usually one-to-one with the screens 2, two screens 2 correspond to two guide holes 1111, and the two guide holes 1111 covered by the screens 2 are also arranged opposite each other. On both sides perpendicular to the direction of the opposite arrangement of the guide holes 1111, the partition wall 111 can form a relatively uniform support for the load on the top of the cylinder 11. This avoids the situation where all the guide holes 1111 are set on one side of the partition wall 111, resulting in one side of the partition wall 111 having better support capacity, while the other side has weaker support capacity due to the concentrated arrangement of the guide holes 1111.

[0038] It is understandable that the screen 2 in the prior art is usually made of steel wire mesh. When the area of ​​the screen 2 is large, the screen 2 is more likely to deform. Therefore, in one embodiment, please refer to... Figure 3 and Figure 4 The screen 2 includes connecting posts 21 and stiffening plates 22, which are cross-connected to form screen holes. Both connecting posts 21 and stiffening plates 22 cover the guide holes 1111. Thus, because the connecting posts 21 and stiffening plates 22 have greater rigidity than the steel wire, the screen 2 formed by the interlacing of connecting posts 21 and stiffening plates 22 has greater rigidity than the steel wire mesh, resulting in stronger resistance to deformation. When the area of ​​the screen 2 is large, the possibility of deformation is relatively small.

[0039] It is understood that the screen 2 is typically deformed along the direction in which it is arranged on the feed side and the discharge side. Therefore, in one embodiment, please refer to... Figure 3 and 4 The surface of the stiffener 22 is perpendicular to the connecting shaft. Thus, the direction of the feed side and the discharge side is basically parallel to the surface of the stiffener 22. For the sheet metal, the resistance to deformation along the direction parallel to the sheet metal surface is stronger than the resistance to deformation along the direction perpendicular to the sheet metal surface. Therefore, it is beneficial to improve the ability of the screen 2 to resist deformation along the direction of the feed side and the discharge side of the screen 2. Figure 3 The surface of stiffener 22 is shown.

[0040] It is understandable that when the screen 2 is installed on the partition wall 111, the feed side of the screen 2 is the side of the screen 2 facing the grinding chamber 112, and the discharge side of the screen 2 is the side of the screen 2 facing the guide flow chamber 113.

[0041] In one embodiment, the stiffener 22 may be tangent to the connecting column 21.

[0042] In one embodiment, the stiffener 22 may be welded to the connecting column 21.

[0043] It is understood that the connection between the stiffening plate 22 and the connecting column 21 is not limited to welding. In one embodiment, please refer to... Figure 4The screen 2 also includes a separator 23 and a clamping member 24. Clamping members 24 are provided at both ends of the connecting column 21. Ribs 22 and separators 23 are both disposed between the clamping members 24 at both ends. The separator 23 is located between two adjacent ribs 22. Both the separator 23 and the ribs 22 can move axially along the connecting column 21. The clamping member 24 abuts against the ribs 22 to press the ribs 22 and separator 23 together. Thus, in the working state, the ribs 22 are separated by the separators 23, and the clamping member 24 abuts against the ribs 22 to press the ribs 22 and separator 23 together, thereby forming the screen 2 for filtration. When the screen openings of screen 2 are clogged with material, screen 2 needs to be cleaned. The clamping member 24 can be disengaged from the rib plate 22, and the rib plate 22 and separator 23 will no longer be pressed together. Both the rib plate 22 and separator 23 can then move axially along the connecting column 21, increasing the distance between adjacent rib plates 22 to facilitate the removal of material clogging the screen 2. Alternatively, after the clamping member 24 is disengaged from the rib plate 22, the rib plate 22 and separator 23 can be removed from the connecting column 21. After the clogged material is cleared, the rib plate 22 and separator 23 can be reinstalled onto the connecting column 21. Therefore, cleaning the material clogging the screen 2 is relatively convenient.

[0044] It is understandable that the clamping member 24 can take many forms when pressing the rib plate 22 and the separator 23.

[0045] In one embodiment, the clamping member 24 is threadedly connected to the connecting post 21, and the stiffening plate 22 and the separator 23 are pressed together by tightening the threads.

[0046] In one embodiment, the clamping member 24 is a nut, which is threadedly connected to the connecting post 21. Tightening the nut causes it to abut against the stiffener 22, thereby pressing the stiffener 22 and the partition plate together.

[0047] In one embodiment, please refer to Figure 5 The clamping member 24 includes a pressure block and a bolt. The two ends of the connecting column 21 are respectively located in the corresponding pressure block. The bolt is threadedly connected to the connecting column 21. Tightening the bolt makes the bolt abut against the pressure block, thereby pressing the stiffening plate 22 and the separator 23 together through the pressure block.

[0048] In one embodiment, multiple axially arranged positioning grooves can be provided on the connecting column 21, and the clamping member 24 is inserted into the corresponding positioning groove so that the clamping member 24 presses the stiffening plate 22 and the separator 23 together.

[0049] In one embodiment, please refer to Figure 4 and Figure 5 The separator 23 can be a sleeve.

[0050] It is understood that the form of the separator 23 is not limited to a sleeve, as long as it can separate the stiffeners 22 by a certain distance. In one embodiment, the separator 23 can also be plate-shaped.

[0051] In one embodiment, the separator 23 can abut against two adjacent stiffeners 22 respectively.

[0052] In one embodiment, the separator 23 may be welded to either of the two adjacent stiffeners 22.

[0053] In one embodiment, the separator 23 may be integrally formed with either of the two adjacent stiffeners 22.

[0054] In one embodiment, please refer to Figure 6 The screen 2 also includes an mounting ring 25. Connecting posts 21 and connecting stiffeners 22 are both housed within the mounting ring 25. The mounting ring 25 is connected to the connecting posts 21 and stiffeners 22 respectively, and is also connected to the partition wall 111. In this way, multiple connecting posts 21 and multiple stiffeners 22 are connected to the mounting ring 25, and then connected to the partition wall 111 via the mounting ring 25. During the assembly and disassembly of the screen 2, the assembly and disassembly mainly involve the mounting ring 25, making the process relatively convenient.

[0055] In one embodiment, the mounting ring 25 can be welded to the connecting post 21 and the stiffening plate 22 respectively.

[0056] In one embodiment, please refer to Figure 1 and Figure 2 A discharge port 114 is formed on the cylinder 11, and the guide hole 1111 is aligned with the discharge port 114 radially along the cylinder 11. In this way, the material in the grinding chamber 112 enters the guide chamber 113 after being screened by the guide hole 1111 and the screen 2 covering the guide hole 1111. The alignment of the guide hole 1111 with the discharge port 114 radially along the cylinder 11 facilitates the faster discharge of the material in the guide chamber 113 from the discharge port 114 under the action of centrifugal force.

[0057] In one embodiment, it is also possible for the guide hole 1111 and the discharge port 114 to be offset from each other at a certain angle along the radial direction of the cylinder 11.

[0058] It is understandable that material tends to accumulate more easily at the location opposite to the discharge port 114. Therefore, in one embodiment, please refer to... Figure 1 and Figure 2 An inspection port 115 is also formed on the cylinder 11, which is arranged opposite to the discharge port 114. In this way, the accumulation of material in the guide cavity 113 can be checked relatively conveniently and accurately through the inspection port 115.

[0059] In one embodiment, please refer to Figure 8A groove 1112 is formed on the partition wall 111, and the groove 1112 is located at the edge of the guide hole 1111. The groove 1112 is configured to partially accommodate the screen 2. In this way, the sealing performance between the screen 2 and the partition wall 111 is better, which can reduce the possibility of material leakage from the screen 2 and the partition wall 111.

[0060] Specifically, Figure 9 The diagram illustrates the path of material leaking between screen 2 and partition wall 111. For clarity, the gap between screen 2 and partition wall 111 is exaggerated. For material to leak between screen 2 and partition wall 111, it needs to move through the opening of groove 1112 to the bottom of groove 1112, and then back from the bottom of groove 1112 to the opening. This multiple bends in the material's movement cause its kinetic energy to decrease, potentially even stopping its movement and reducing the likelihood of leakage. Furthermore, material with a tendency to leak accumulates within groove 1112, effectively blocking the leakage path and further reducing the possibility of leakage.

[0061] It is understandable that the sealing between the screen 2 and the partition wall 111 is achieved through the screen 2 and the groove 1112. The pins are only used to fasten the screen 2. There is no need to reduce the distance between adjacent pins to improve the sealing between the screen 2 and the partition wall 111. Therefore, the distance between adjacent pins can be increased, reducing the number of pins used. This ensures the sealing between the screen 2 and the partition wall 111 and also makes the disassembly and assembly of the screen 2 more convenient.

[0062] In one embodiment, the screen 2 can also be fastened with bolts.

[0063] In one embodiment, please refer to Figure 8 and Figure 9 The opening of the groove 1112 faces away from the grinding chamber 112. With this structure, the material in the grinding chamber 112 is thrown out in a direction that is basically consistent with the opening direction of the groove under the action of centrifugal force. The possibility of material entering the groove 1112 from the opening of the groove is small. Therefore, the possibility of material entering the groove 1112 from the opening of the groove and then turning back to the opening of the groove 1112 through the bottom of the groove is reduced, thus improving the sealing performance between the screen 2 and the partition wall 111.

[0064] In one embodiment, when the screen 2 is provided with an mounting ring 25, the groove 1112 on the partition wall 111 is configured to accommodate the mounting ring 25; when the screen 2 is not provided with an mounting ring 25, the groove 1112 on the partition wall 111 is configured to accommodate the two ends of the connecting column 21 and the stiffener 22 respectively.

[0065] Understandably, vertical grinding mills typically also include a stirring device 3, which is located inside the grinding chamber 112 of the cylinder 11. The stirring device 3 rotates to grind and stir the material inside the grinding chamber 112, and the rotation of the stirring device 3 subjectes the material to centrifugal force.

[0066] It is understood that the screen 2 is not limited to the form of connecting the column 21 and the stiffening plate 22. In one embodiment, the screen 2 may be made of interwoven steel bars.

[0067] In one embodiment, please refer to Figure 1 The grinding cylinder 1 also includes a cover plate 12, which is located at the top of the cylinder body 11. This structure allows the cover plate 12 to seal the grinding chamber 112 and the guide chamber 113. During the operation of the vertical grinder, the material is ground and stirred within the sealed grinding chamber 112, and then enters the sealed guide chamber 113 through the guide hole 1111, minimizing material spillage. Furthermore, after the grinder stops operating, the cover plate 12 can be opened to facilitate cleaning of the grinding chamber 112 and / or the guide chamber 113 when cleaning is required.

[0068] In one embodiment, please refer to Figure 1 The cover plate 12 includes a first cover plate 121 and a second cover plate 122 connected to each other. The second cover plate 122 surrounds the first cover plate 121. The first cover plate 121 covers the grinding chamber 112, and the second cover plate 122 covers the flow guiding chamber 113. In this way, the grinding chamber 112 and / or the flow guiding chamber 113 can be opened and closed independently according to actual needs, thus making the opening and closing of the first cover plate 121 and the second cover plate 122 more targeted.

[0069] In one embodiment, please refer to Figure 1 A discharge port 114 is formed on the cylinder body 11. The cylinder body 11 includes a first cylinder wall 116, a second cylinder wall 117, and a third cylinder wall 118. A partition wall 111 is disposed at the top of the first cylinder wall 116. The second cylinder wall 117 and the third cylinder wall 118 are both surrounding the partition wall 111. The second cylinder wall 117 is connected to both the first cylinder wall 116 and the third cylinder wall 118. A guide cavity 113 is located between the partition wall 111 and the third cylinder wall 118. The first cylinder wall 116 and the partition wall 111 form a grinding cavity 112. The discharge port 114 is formed on the second cylinder wall 117 and / or the third cylinder wall 118. The second cylinder wall 117 gradually slopes towards the bottom end of the first cylinder wall 116 on the side facing the discharge port 114. With this structure, the material in the guide cavity 113 is guided by the inclined second cylinder wall 117 to converge towards the discharge port 114, which is conducive to the material being discharged from the discharge port 114 and avoids the material accumulating in large quantities in the guide cavity 113.

[0070] The various embodiments / implementations provided in this application can be combined with each other without creating contradictions.

[0071] The above are merely preferred embodiments of this application and are not intended to limit the scope of this 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 vertical grinding machine, characterized in that, include: A grinding cylinder includes a cylinder body and a partition wall formed within the cylinder body, the partition wall dividing the cylinder body into a grinding chamber and a flow guiding chamber, the flow guiding chamber surrounding the upper outer periphery of the grinding chamber, and a flow guiding hole formed on the partition wall communicating between the grinding chamber and the flow guiding chamber; as well as Two screens are arranged opposite to each other, covering the flow guide holes. A discharge port is formed on the cylinder, and the guide hole is aligned with the discharge port along the radial direction of the cylinder. The grinding cylinder also includes a cover plate, which is disposed at the top of the cylinder body.

2. The vertical grinding machine according to claim 1, characterized in that, The screen includes connecting columns and stiffening plates. The connecting columns and stiffening plates are cross-connected to form screen holes. Both the connecting columns and stiffening plates cover the flow guide holes.

3. The vertical grinding machine according to claim 2, characterized in that, The screen also includes a separator and a clamping member. The clamping member is provided at both ends of the connecting column. The stiffener and the separator are both provided between the clamping members at both ends. The separator is located between two adjacent stiffeners. The separator and the stiffener can move along the axial direction of the connecting column. The clamping member abuts against the stiffener to press the stiffener and the separator together.

4. The vertical grinding machine according to claim 2, characterized in that, The screen also includes an installation ring, and the connecting column and the stiffening plate are both disposed inside the installation ring. The installation ring is connected to the connecting column and the stiffening plate respectively, and the installation ring is connected to the partition wall.

5. The vertical grinding machine according to any one of claims 1 to 4, characterized in that, An inspection port is also formed on the cylinder, and the inspection port is arranged opposite to the discharge port.

6. The vertical grinding machine according to any one of claims 1 to 4, characterized in that, A groove is formed on the partition wall and disposed at the edge of the flow guide hole, the groove being configured to partially accommodate the screen.

7. The vertical grinding machine according to claim 6, characterized in that, The groove opening is away from the grinding chamber.

8. The vertical grinding machine according to any one of claims 1 to 4, characterized in that, The cover plate includes a first cover plate and a second cover plate connected to each other, the second cover plate surrounding the first cover plate, the first cover plate covering the grinding chamber, and the second cover plate covering the flow guiding chamber.

9. The vertical grinding machine according to any one of claims 1 to 4, characterized in that, A discharge port is formed on the cylinder body. The cylinder body includes a first cylinder wall, a second cylinder wall, and a third cylinder wall. The partition wall is disposed at the top of the first cylinder wall. The second cylinder wall and the third cylinder wall are both surrounding the partition wall. The second cylinder wall is connected to the first cylinder wall and the third cylinder wall respectively. The flow guiding cavity is located between the partition wall and the third cylinder wall. The first cylinder wall and the partition wall form the grinding cavity. The discharge port is formed on the second cylinder wall and / or the third cylinder wall. The second cylinder wall gradually slopes towards the bottom of the first cylinder wall on the side facing the discharge port.

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