Grinding roller angle adjusting device of coal mill
By setting the heads of the guide shell bolts and the pressing frame bolts in the outside and in the cavity in the coal mill, the problem of inconvenient removal of the guide plate of the existing coal mill is solved, and the rapid removal and replacement of the guide plate is achieved, and the working efficiency is improved.
Patent Information
- Application Number
- CN202421810021.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-07-30
AI Technical Summary
The guide plates of existing coal mills are connected by countershot bolts, which leads to inconvenience and time-consuming disassembly, especially when installing gaskets or replacing guide plates, the countershot bolts need to be removed.
By setting the head of the guide shell bolt on the outside of the guide shell bolt and setting the head of the pressing frame bolt in the cavity, the guide shell bolt and pressing frame bolt are convenient and quick to screw out the guide plate, thereby simplifying the process of disassembly and replacement.
It realizes rapid disassembly and replacement of guide plates, simplifies the process of adding gaskets, reduces operating time and energy, and improves work efficiency.
Smart Images
Figure CN223010705U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coal mill, in particular to an angle adjusting device for the grinding roller of a coal mill. Background Art
[0002] The grinding roller of the coal mill is connected with the pressure frame, and the angle of the grinding roller is adjusted by the up and down movement of the pressure frame; the pressure frame is slidably connected in the guide housing, and guide plates are provided on the outer side of the pressure frame and the inner side of the guide housing; the centrifugal force generated by the rotation of the grinding roller will cause collision wear between the guide plates. After wear, the gap between the guide blocks will increase. When the gap increases to more than 8 mm, gaskets need to be added for adjustment, and when the guide plates are severely worn, they need to be replaced.
[0003] The existing guide plates of the coal mill are connected by countersunk head bolts. When adding gaskets and replacing the guide plates, the countersunk head bolts need to be disassembled. The installation position of the countersunk head bolts makes it very inconvenient to disassemble them, which is time-consuming and laborious. Content of the Utility Model
[0004] The main purpose of the utility model is to provide an angle adjusting device for the grinding roller of a coal mill to solve the problems in the above-mentioned existing technology.
[0005] To achieve the above purpose, the utility model provides an angle adjusting device for the grinding roller of a coal mill, which includes a guide housing, a pressure frame slidably connected inside the guide housing, and a grinding roller connected with the pressure frame; a pressure frame guide plate is connected to the outer side of the pressure frame through a pressure frame bolt, and a guide housing guide plate is connected to the inner side of the guide housing through a guide housing bolt; the head of the guide housing bolt is located outside the guide housing guide plate, a threaded hole for connecting with the guide housing bolt is provided on the guide housing guide plate, and a through hole for the guide housing bolt to pass through is provided on the guide housing.
[0006] Further, a guide housing limit nut is connected to the guide housing bolt, and the guide housing limit nut is located outside the guide housing.
[0007] Further, a cavity is provided inside the pressure frame, the head of the pressure frame bolt is located inside the cavity, a threaded hole for connecting with the pressure frame bolt is provided on the pressure frame guide plate, and a through hole for the pressure frame bolt to pass through is provided on the pressure frame.
[0008] Further, a pressure frame limit bolt is connected to the pressure frame bolt, and the pressure frame limit bolt is located inside the cavity.
[0009] Further, the pressure frame is hinged to the grinding roller bracket through a pin shaft, the grinding roller is rotatably connected to the grinding roller bracket, and a grinding disc is provided below the grinding roller.
[0010] By arranging the head of the guide housing bolt outside the guide housing bolt and the head of the pressure frame bolt inside the cavity, the utility model can conveniently and quickly screw out the guide housing bolt and the pressure frame bolt, so as to facilitate adding gaskets and replacing the guide plates.
[0011] By providing a guide housing limit nut and a pressure frame limit bolt, the utility model can adjust the available lengths of the guide housing bolts and the pressure frame bolts, so that the bolts can still be used after adding gaskets, ensuring the fastening effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The schematic diagrams in the specification, which form a part of this application, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not unduly limit the utility model.
[0013] Figure 1 It is a schematic diagram of the connection between the pressure frame and the pressure roller in the embodiment;
[0014] Figure 2 It is a sectional view of the guide housing and the pressure frame in the embodiment;
[0015] Figure 3 It is a sectional view of the guide housing and the pressure frame in the prior art.
[0016] In the figure: 1. Pressure frame; 2. Grinding roller; 3. Guide housing; 4. Pressure frame bolt; 5. Pressure frame guide plate; 6. Guide housing bolt; 7. Guide housing guide plate; 8. Pressure frame limit bolt; 9. Pin shaft; 10. Grinding roller support; 11. Grinding disc; 12. Guide housing limit nut. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the drawings and combine with the embodiments to detail the utility model.
[0018] As Figure 3 shown, for the grinding roller angle adjustment device of the coal mill in the prior art, a pressure frame guide plate 5 is connected to the outside of the pressure frame 1 through a pressure frame bolt 4, and a guide housing guide plate 7 is connected to the inside of the guide housing 3 through a guide housing bolt 6; the head of the guide housing bolt 6 is located in the counterbore inside the guide housing guide plate 7, and the head of the pressure frame bolt 4 is located in the counterbore outside the pressure frame guide plate 5; the tails of the guide housing bolt 6 and the pressure frame bolt 4 are both fixed by fastening nuts; since the inside of the guide housing guide plate 7 is in contact with the outside of the pressure frame guide plate 5, and the movement range of the pressure frame guide plate 5 driven by the pressure frame 1 is limited up and down, when disassembling the guide housing bolt 6, the pressure frame guide plate 5 must be moved upward to remove the lower guide housing bolt 6, and then the pressure frame guide plate 5 must be moved downward to remove the upper guide housing bolt 6, which is rather troublesome; when disassembling the pressure frame bolt 4, the pressure frame bolt 4 can only be removed after the guide housing guide plate 7 is disassembled, which is also rather troublesome.
[0019] As Figures 1 to 2As shown in the figure, according to an embodiment of the present utility model, a grinding roller angle adjusting device for a coal mill is provided, which includes a guide housing 3, a pressure frame 1 slidably connected inside the guide housing 3, and a grinding roller 2 connected to the pressure frame 1; the pressure frame 1 is hinged to a grinding roller support 10 through a pin shaft 9, the grinding roller 2 is rotatably connected to the grinding roller support 10, and a grinding table 11 is provided below the grinding roller 2; the pressure frame 1 slides up and down in the guide housing, and the angle of the grinding roller 2 can be changed.
[0020] As Figure 1 shown in the figure, a pressure frame guide plate 5 is connected to the outside of the pressure frame 1 through a pressure frame bolt 4, and a guide housing guide plate 7 is connected to the inside of the guide housing 3 through a guide housing bolt 6; the pressure frame guide plate 5 and the guide housing guide plate 7 are in contact with each other; the head of the guide housing bolt 6 is located outside the guide housing guide plate 7, a threaded hole connected to the guide housing bolt 6 is provided on the guide housing guide plate 7, and a through hole for the guide housing bolt 6 to pass through is provided on the guide housing 3; the guide housing bolt 6 can be screwed into or taken out from the outside of the guide housing 3.
[0021] As Figure 1 shown in the figure, a cavity is provided inside the pressure frame 1, the head of the pressure frame bolt 4 is located inside the cavity, a threaded hole connected to the pressure frame bolt 4 is provided on the pressure frame guide plate 5, and a through hole for the pressure frame bolt 4 to pass through is provided on the pressure frame 1; the pressure frame bolt 4 can be screwed into or taken out from the cavity.
[0022] As Figure 1 shown in the figure, in an optional embodiment, a guide housing limit nut 12 is connected to the guide housing bolt 6, and the guide housing limit nut 12 is located outside the guide housing 3; a pressure frame limit bolt 8 is connected to the pressure frame bolt 4, and the pressure frame limit bolt 8 is located inside the cavity; by setting the guide housing limit nut 12 and the pressure frame limit bolt 8, the available lengths of the guide housing bolt 6 and the pressure frame bolt 4 can be adjusted, so that the bolts can still be used after adding gaskets, ensuring the fastening effect.
[0023] The working principle of the above embodiment is:
[0024] By setting the head of the guide housing bolt 6 outside the guide housing bolt 6 and setting the head of the pressure frame bolt 4 inside the cavity, the guide housing bolt 6 and the pressure frame bolt 4 can be screwed out conveniently and quickly, so that the guide housing guide plate 7 and the pressure frame guide plate 5 can be disassembled conveniently; thus, it is convenient to add gaskets and replace the guide plates.
[0025] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.
Claims
1. A coal mill roller angle adjustment device, comprising a guide shell (3), a press frame (1) slidably connected to the inside of the guide shell (3), and a grinding roller (2) connected to the press frame (1); characterized in that: The outer side of the pressure frame (1) is connected to a pressure frame guide plate (5) via a pressure frame bolt (4), and the inner side of the guide shell (3) is connected to a guide shell guide plate (7) via a guide shell bolt (6); the head of the guide shell bolt (6) is located on the outer side of the guide shell guide plate (7), the guide shell guide plate (7) is provided with a threaded hole connected to the guide shell bolt (6), and the guide shell (3) is provided with a through hole for the guide shell bolt (6) to pass through.
2. The coal mill roller angle adjustment device according to claim 1, characterized in that: The guide housing bolt (6) is connected to a guide housing limit nut (12), and the guide housing limit nut (12) is located outside the guide housing (3).
3. The coal mill roller angle adjustment device according to claim 2, characterized in that: The press frame (1) is provided with a cavity inside, the head of the press frame bolt (4) is located in the cavity, the press frame guide plate (5) is provided with a threaded hole connected to the press frame bolt (4), and the press frame (1) is provided with a through hole for the press frame bolt (4) to pass through.
4. The coal mill roller angle adjustment device according to claim 3, characterized in that: The frame pressing bolt (4) is connected to a frame pressing limit bolt (8), and the frame pressing limit bolt (8) is located in the cavity.
5. The coal mill roller angle adjustment device according to claim 1, characterized in that: The pressing frame (1) is hingedly connected to a grinding roller bracket (10) via a pin shaft (9); the grinding roller (2) is rotatably connected to the grinding roller bracket (10); and a grinding disc (11) is provided below the grinding roller (2).