CN220215222U - Scraping device of mill - Google Patents
Scraping device of mill Download PDFInfo
- Publication number
- CN220215222U CN220215222U CN202321597344.6U CN202321597344U CN220215222U CN 220215222 U CN220215222 U CN 220215222U CN 202321597344 U CN202321597344 U CN 202321597344U CN 220215222 U CN220215222 U CN 220215222U
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- CN
- China
- Prior art keywords
- scraping
- plate
- mill
- rotating shaft
- scraping plate
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Links
- 238000007790 scraping Methods 0.000 title claims abstract description 77
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000003818 cinder Substances 0.000 description 12
- 239000003245 coal Substances 0.000 description 7
- 239000002893 slag Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
Landscapes
- Crushing And Grinding (AREA)
Abstract
The utility model discloses a scraping device of a mill, which comprises a fixed frame and a scraping assembly rotationally connected with the bottom of the fixed frame through a rotating shaft, wherein the rotating shaft is provided with a torsion spring, two ends of the torsion spring are respectively abutted against the fixed frame and the scraping assembly, and the rotating angle of the scraping assembly is controlled; the scraping assembly comprises a scraping plate and a lining plate, wherein the lining plate is fixedly connected with one side of the lower end of the scraping plate through a screw, the upper end of the scraping plate is rotationally connected with the rotating shaft, two ends of the torsion spring are respectively abutted against the baffle and the scraping plate, and the cross section of the lower end of the scraping plate is right trapezoid. The utility model has the characteristics of simple structure, strong practicability, easy maintenance and the like, when the torque generated by friction exceeds the set value of the torsion spring, the scraping plate deflects to achieve the avoiding effect, so that the problems of abrasion or breakage and the like caused by overlarge load are avoided, the lining plate and the scraping plate are detachably connected, and the lining plate can be directly replaced, thereby reducing the replacement difficulty and the maintenance cost.
Description
Technical Field
The utility model relates to the technical field of slag removing devices of a mill, in particular to a scraping device of the mill.
Background
Coal mines need to be ground by a mill after being mined. In actual operation, the crushed coal mines have different sizes, and large-particle coal slag or foreign matters are needed to be selected from the flow channels of the mill. Therefore, a scraper is generally additionally arranged in the mill, and in the process of rotating along with the mill, the scraper can scrape out large-particle coal cinder or foreign matters in the runner so as to achieve the purpose of screening.
However, the device has the following problems in the actual use process, because the scraping plate is welded with the mill, if larger foreign matters exist during scraping, the scraping plate vibrates slightly, the service life of the scraping plate can be influenced after the service time is long, the scraping plate is directly broken due to overlarge stress, and therefore the maintenance cost of the scraping plate is increased, and the whole scraping plate needs to be replaced.
Disclosure of Invention
The utility model aims to solve the problems, and designs a scraping device of a mill, wherein a scraping plate can automatically avoid during scraping.
The technical scheme of the utility model for achieving the purpose is that the scraping device of the mill comprises a fixed frame and a scraping assembly rotationally connected with the bottom of the fixed frame through a rotating shaft, wherein a torsion spring is arranged on the rotating shaft, two ends of the torsion spring are respectively abutted against the fixed frame and the scraping assembly, and the rotating angle of the scraping assembly is controlled;
the scraping assembly comprises a scraping plate and a lining plate, the lining plate is fixedly connected with one side of the lower end of the scraping plate through a screw, the upper end of the scraping plate is rotationally connected with the rotating shaft, two ends of the torsion spring are respectively abutted to the baffle and the scraping plate, and the section of the lower end of the scraping plate is right trapezoid.
Preferably, the fixing frame is composed of a bracket and a supporting frame, wherein the supporting frame is fixedly connected with the bottom of the bracket through bolts, and the bracket is fixedly connected with the grinding machine.
Preferably, a baffle is arranged at the bottom of the bracket, and the baffle and the scraping plate are arranged side by side and are close to one end of the rotating shaft.
Preferably, the lower end surface of the lining plate is lower than the lower end surface of the scraping plate.
Preferably, bolts and washers are arranged at two ends of the rotating shaft, the washers are sleeved on the bolts, and the bolts are in threaded connection with the rotating shaft.
Preferably, the rotation angle of the scraping assembly is not more than 45 degrees.
Compared with the prior art, the beneficial effects are that:
the scraper blade has the characteristics of simple structure, strong practicability, easy maintenance and the like, when the torque generated by friction exceeds the set value of the torsion spring, the scraper blade deflects to achieve the avoiding effect, so that the problems of abrasion or breakage and the like caused by overlarge load are avoided.
Drawings
FIG. 1 is a schematic side elevational view of the present utility model;
fig. 2 is a schematic elevational view of the present utility model.
In the figure, 1, a fixing frame; 11. a bracket; 111. a mounting plate; 112. a support plate; 113. a square plate; 12. a support frame; 2. a scraping assembly; 21. a scraper; 22. a lining plate; 3. a rotating shaft; 4. a torsion spring; 5. a bolt; 6. a gasket; 7. and a baffle.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1 and 2, a scraping device of a mill is installed on the mill and is used for removing large-particle foreign matters and coal slag, and the scraping device mainly comprises a fixing frame 1, a rotating shaft 3, a torsion spring 4, a scraping assembly 2 and other components, wherein the fixing frame 1 is composed of two parts: the support 11 and the support frame 12, the support 11 is formed by a square mounting plate 111, two triangular-like support plates 112 and a square plate 113, one side of the two triangular plates is fixedly connected with the mounting plate 111, the square plate 113 is horizontally fixed at the bottom of the support plate 112, thus the stability of the overall structure of the support 11 can be greatly improved, the mounting plate 111 is fixedly connected with a mill, the square plate 113 is provided with the fixed support frame 12, and the support frame 12 is fixedly arranged at the bottom of the square plate 113 through bolts 5.
Referring to fig. 2, the scraping assembly 2 mainly comprises a scraping plate 21 and a lining plate 22, the lining plate 22 is fixed on one side of the lower end surface of the scraping plate 21 facing the cinder (i.e. one side facing the cinder when the scraping plate 21 rotates) through screws, and the height of the lower end surface of the lining plate 22 is lower than that of the lower end surface of the scraping plate 21, so that the lining plate 22 can be directly contacted with cinder when the cinder is scraped, a plurality of oblong holes are formed in the scraping plate 21 for convenient adjustment, the lining plate 22 is fixed on the scraping plate 21 through the oblong holes by the screws, and the upper and lower heights of the lining plate 22 can be adjusted through the oblong holes according to actual use requirements, so that cinder with different sizes is scraped.
Referring to fig. 1, the cross section of the lower end of the scraper 21 is in a right trapezoid shape, which has two functions, namely, the contact surface of the scraper 21 and cinder is thickened, the supporting capability of the scraper 21 is greatly improved, deformation and bending cannot easily occur, the maintenance period of the scraper 21 can be further prolonged, the bearing capacity of the lining plate 22 can be improved, and the counterweight of the scraper is additionally arranged, so that the scraper cannot easily vibrate; and one end of the lining plate 22, which is far away from the mill, is provided with an arc-shaped avoiding part which is matched with the runner on the mill and can be close to the runner as much as possible.
When the cinder is scraped, the cinder is mainly scraped through the lining plate 22, the scraping plate 21 plays a supporting role, abrasion of the scraping plate 21 can be reduced, and the lining plate 22 and the scraping plate 21 are detachably connected, so that when the lining plate 22 cannot be used after being abraded, the lining plate 22 can be replaced, and maintenance cost of the device can be reduced.
Referring to fig. 1 and 2, the rotating shaft 3 is connected with the supporting frame 12 in a penetrating way, two ends of the rotating shaft 3 extend outwards along two ends of the supporting frame 12, the upper end of the scraping plate 21 is rotationally connected with two ends of the rotating shaft 3, the torsion spring 4 is sleeved on the rotating shaft 3, the bottom of the supporting frame 12 is further provided with a baffle 7 which is parallel to the scraping plate 21, the baffle 7 is close to one end of the rotating shaft 3, the torsion spring 4 is located between the scraping plate 21 and the baffle 7, two ends of the torsion spring 4 are respectively abutted against the scraping plate 21 and the baffle 7, when the stress of the scraping plate 21 exceeds the torque of the torsion spring 4, the lining plate 22 and the scraping plate 21 rotate, so that the avoiding effect can be achieved when large coal slag is encountered, the rotating angle of the scraping plate 21 and the lining plate 22 generally does not exceed 45 degrees, and all coal slag cannot be avoided.
In order to prevent the scraping plate 21 from separating from the rotating shaft 3, washers 6 and bolts 5 are arranged at two ends of the rotating shaft 3, wherein the washers 6 are sleeved on the bolts 5, the bolts 5 are in threaded connection with the end of the rotating shaft 3, and the two washers 6 can play a limiting role.
In general, when the cinder is scraped, the lining plate 22 can be directly contacted with cinder, when the cinder or the foreign matter is collided with the lining plate 22, and when the generated force exceeds the set value of the torsion spring 4, the lining plate 22 and the scraping plate 21 rotate relative to the rotating shaft 3 to play a role of avoiding.
The above technical solution only represents the preferred technical solution of the present utility model, and some changes that may be made by those skilled in the art to some parts of the technical solution represent the principles of the present utility model, and the technical solution falls within the scope of the present utility model.
Claims (6)
1. The scraping device of the mill is characterized by comprising a fixed frame (1) and a scraping assembly (2) rotationally connected with the bottom of the fixed frame (1) through a rotating shaft (3), wherein a torsion spring (4) is arranged on the rotating shaft (3), two ends of the torsion spring (4) are respectively abutted against the fixed frame (1) and the scraping assembly (2), and the rotating angle of the scraping assembly (2) is controlled;
the scraping assembly (2) comprises a scraping plate (21) and a lining plate (22), the lining plate (22) is fixedly connected with one side of the lower end of the scraping plate (21) through a screw, the upper end of the scraping plate (21) is rotationally connected with the rotating shaft (3), two ends of the torsion spring (4) are respectively abutted to the baffle and the scraping plate (21), and the cross section of the lower end of the scraping plate (21) is right trapezoid.
2. Mill scraping device according to claim 1, characterized in that the fixing frame (1) is composed of a bracket (11) and a supporting frame (12), wherein the supporting frame (12) is fixedly connected with the bottom of the bracket (11) through a bolt (5), and the bracket (11) is fixedly connected with the mill.
3. A mill scraping device according to claim 2, characterized in that the bottom of the support (11) is provided with a baffle (7), the baffle (7) and the scraper (21) being arranged side by side and being close to one end of the shaft (3).
4. A mill scraping device according to claim 1, characterized in that the lower end surface of the backing plate (22) is lower than the lower end surface of the scraper (21).
5. The scraping device of the mill according to claim 1, wherein bolts (5) and washers (6) are arranged at two ends of the rotating shaft (3), the washers (6) are sleeved on the bolts (5), and the bolts (5) are in threaded connection with the rotating shaft (3).
6. Mill scraping device according to claim 1, characterized in that the angle of rotation of the scraping assembly (2) does not exceed 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321597344.6U CN220215222U (en) | 2023-06-21 | 2023-06-21 | Scraping device of mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321597344.6U CN220215222U (en) | 2023-06-21 | 2023-06-21 | Scraping device of mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220215222U true CN220215222U (en) | 2023-12-22 |
Family
ID=89180737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321597344.6U Active CN220215222U (en) | 2023-06-21 | 2023-06-21 | Scraping device of mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220215222U (en) |
-
2023
- 2023-06-21 CN CN202321597344.6U patent/CN220215222U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |