CN210646644U - Vertical roller mill scraping plate device - Google Patents
Vertical roller mill scraping plate device Download PDFInfo
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- CN210646644U CN210646644U CN201921327841.8U CN201921327841U CN210646644U CN 210646644 U CN210646644 U CN 210646644U CN 201921327841 U CN201921327841 U CN 201921327841U CN 210646644 U CN210646644 U CN 210646644U
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Abstract
The utility model relates to a vertical roller mill scraping plate device, which comprises a grinding disc, a scraping plate frame component and a scraping plate; two rows of threaded holes are arranged on the annular boss in the middle of the grinding disc; the scraper frame assembly comprises a supporting plate, a first arc-shaped rib plate, a second arc-shaped rib plate and a circumference connecting plate; the circumferential connecting plate is arranged on an annular boss in the middle of the grinding disc; a supporting plate is welded on the circumferential connecting plate; arc-shaped rib plates are welded between the supporting plate and the circumferential connecting plate; the scraper plate is installed on a supporting plate on the scraper frame assembly through a fastening assembly. The utility model has simple structure and reasonable design, and can effectively prevent the fracture of the scraping plate and the abrasion of the air duct; the overall rigidity of the scraper frame is increased, the installation clearance of the scraper plate is reasonably adjustable, the possibility of air leakage of the air channel mill-through rear system is effectively reduced, the service life of the scraper plate is effectively prolonged by adding wear-resistant materials, the personnel of convenience can be quickly replaced in a narrow space, and the operation efficiency of the vertical mill is guaranteed without influencing continuous production.
Description
Technical Field
The utility model belongs to the technical field of non-metallic ore grinding equipment, especially, relate to a flitch device is scraped to vertical roller mill.
Background
The vertical mill is an energy-saving grinding device which is widely applied to industries such as non-metallic minerals, cement building materials, steel, electric power and the like at present. The vertical roller mill is used for grinding, drying and selecting the raw materials under the negative pressure operation state. In the operation process, after the materials are primarily ground by the grinding disc and the grinding roller, one part of finished products are winnowed to enter the powder concentrator, the other part of materials are blown back to the grinding disc by the air in the air duct to be secondarily ground, and the other part of materials can fall into the air duct, are scraped into the outer discharge port by the scraping plate and are sent into the grinding mill again through the outer circulating system to be ground. Generally, only one outer discharge port is designed on the vertical mill, so when the mill runs, some outer discharge materials can be discharged after rotating a circle along with the scraper plate, the more the outer discharge materials in front of the scraper plate are accumulated in the process, the outer discharge materials move to the outer edge of the scraper plate under the action of centrifugal force, and the outer discharge materials are subjected to extrusion friction between the scraper plate and the air duct shell.
The existing scraping plate device of the vertical mill is only that a single scraping plate is simply connected with the bottom surface of the upper part of the grinding disc through bolts, and all the scraping plates are connected to form a whole with poor rigidity. The scraping plate with the structure belongs to a thin-wall large part, and when more materials are discharged outside in the air channel and large blocks exist, the scraping plate and the connecting bolt are broken frequently, so that the scraping plate located at the lower part falls off, and the scraping function cannot be realized. The air duct is a large rivet welding splicing piece, and the scraping plate is often scraped and interfered with the inner wall of the air duct due to the time setting error, so that the air duct and the scraping plate are greatly abraded. According to the characteristics of the vertical mill structure and the grinding process, if the structural design of the scraping plate of the vertical mill is unreasonable, the discharge of materials is influenced, and in the production link, if the air channel mill penetrates through and leaks cold air, the production indexes such as heat consumption, power consumption and the like of unit finished products are influenced, and finally, the air consumption and the stable operation of a vertical mill system are influenced.
In production practice, the inventors have found that the above method has major drawbacks: on one hand, the scraper plate has a large structure and insufficient thin strength, and is easy to break when being subjected to external force; on the other hand, the scraping plate is easy to wear and the installation position is not adjustable, so that air leakage caused by wearing of the air duct is easy to occur. Therefore, the vertical roller mill scraper device can improve the abrasion resistance and prolong the service life under the environment that more powdery materials and blocky materials exist in the air duct. Meanwhile, when the vertical mill needs to be overhauled and replaced, personnel can conveniently and rapidly replace the vertical mill in a narrow space, and the problem that continuous production is not affected so as to ensure the operation stability of the vertical mill is a problem which needs to be solved urgently.
Disclosure of Invention
The utility model discloses a solve the technical problem that exists among the known art and provide a structural design reasonable, manufacturing is simple, and installation adjustment is convenient to powdery material and massive material more environment can smoothly scrape the material into the outer row's mouth in the wind channel, can effectively increase parts life again, reduce the possibility that the wind channel bottom ground was worn, furthest has guaranteed the balance of the system wind that immediately grinds, thereby make the novel vertical roller mill scraping plate device that immediately grinds can steady operation.
The utility model discloses a solve the technical scheme that technical problem that exists among the well-known technique took and be:
a novel vertical roller mill scraping plate device comprises a grinding disc, a scraping plate frame assembly arranged on the grinding disc and a scraping plate arranged on the scraping plate frame assembly; an annular space area with upper ventilation and lower discharge is formed between the grinding disc and the vertical roller mill air duct; the method is characterized in that: the middle part of the grinding disc is provided with an annular boss, and the boss is provided with two rows of threaded holes in the circumferential direction;
the scraper frame assembly comprises a supporting plate, a first arc-shaped rib plate, a second arc-shaped rib plate and a circumference connecting plate; the circumferential connecting plate is attached to the annular boss in the middle of the grinding disc, and two rows of through holes corresponding to the threaded holes in the boss are formed in the circumferential connecting plate; six supporting plates are uniformly welded on the outer circumference of the circumferential connecting plate; a first arc-shaped rib plate and three second arc-shaped rib plates are welded between each supporting plate and the circumferential connecting plate;
the scraping plate is provided with a scraping plate height adjusting long hole; the scraper plate is installed on a support plate on the scraper frame assembly through a fastening assembly.
The utility model discloses can also adopt following technical measure:
in order to prolong the service life of the scraping plate, a wear-resistant layer is built up on the basis of the original material at the bottom of the scraping plate.
Preferably, in the technical scheme, the height of the wear-resistant layer is 100mm, and the thickness of the wear-resistant layer is 5 mm.
Above-mentioned technical scheme is preferred, in order to guarantee to scrape the material in the wind channel into outer row mouth, not produce too much long-pending material. Meanwhile, the bottom and the side wall of the air duct can not generate scratch and friction due to larger materials. According to actual working conditions, the scraper plate keeps a 30mm installation clearance with the bottom and the side wall of the air duct.
According to the preferable technical scheme, the first arc-shaped rib plate and the second arc-shaped rib plate are welded on the same side of the supporting plate, the scraping plate is installed on the opposite side of the supporting plate, and the hardfacing layer faces downwards.
The utility model has the advantages and positive effects that: because the above technical scheme is adopted in the utility model, have simple structure, reasonable in design, can prevent effectively to scrape the fracture of flitch and the wearing and tearing in wind channel. Normal work under the more environment of powdery material and cubic material in the wind channel, scrape the increase of plate holder global rigidity, scrape the reasonable adjustable of flitch installation gap, reduced the wind channel effectively and worn the possibility of back system air leakage, thereby effectively prolonged the life who scrapes the flitch through increasing wear-resisting material, easy wearing and tearing spare manufacturing is easy, but quick replacement, thereby the personnel of being convenient for quick replacement in narrow and small space does not influence continuous production and guarantees the operating efficiency who immediately grinds.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the scraper frame structure;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is an enlarged view of portion I of FIG. 2;
FIG. 5 is a top view of FIG. 4;
fig. 6 is a schematic view of the scraper plate structure.
In the figure: 1. a grinding disc; 1-1, annular boss; 1-2, a threaded hole; 2. an air duct; 3. a bolt; 4. a nut; 5. a gasket; 6. a scraping plate; 6-1, long holes; 6-2, wear-resistant layer; 7. a squeegee assembly; 7-1, a support plate; 7-2, first arc-shaped rib plates; 7-3, second arc-shaped rib plates; 7-4, a circumferential connecting plate; 7-40 and through holes.
Detailed Description
For further understanding of the contents, features and effects of the present invention, the following embodiments are exemplified and will be described in detail with reference to the accompanying drawings:
referring to fig. 1 to 6, a novel vertical roller mill scraping plate device comprises a grinding disc 1, a scraping plate frame assembly 7 mounted on the grinding disc, and a scraping plate 6 mounted on the scraping plate frame assembly; an annular space area with upper ventilation and lower discharge is formed between the grinding disc 1 and the vertical roller mill air duct 2; the middle part of the grinding disc is provided with an annular boss 1-1, and the boss is provided with two rows of threaded holes 1-2 in the circumferential direction;
the scraper frame assembly 7 comprises a supporting plate 7-1, a first arc-shaped rib plate 7-2, a second arc-shaped rib plate 7-3 and a circumferential connecting plate 7-4; the circumferential connecting plate is attached to an annular boss in the middle of the grinding disc, two rows of through holes 7-40 corresponding to threaded holes in the boss are formed in the circumferential connecting plate, and the circumferential connecting plate is mounted on the annular boss through a fastener; six support plates 7-1 are uniformly welded on the outer circumference of the circumferential connecting plate; a first arc-shaped rib plate 7-1 and three second arc-shaped rib plates 7-2 are welded between each supporting plate and the circumferential connecting plate; the scraping plate 6 is provided with a scraping plate height adjusting long hole 6-1; the scraping plate is arranged on a supporting plate 7-1 on the scraping plate frame component through a fastening component consisting of bolts 3 and 4, a nut 4 and a gasket 5.
The utility model discloses can also adopt following technical measure:
in order to prolong the service life of the scraping plate, a wear-resistant layer 6-2 is welded on the basis of the original material at the bottom of the scraping plate in a surfacing mode.
Preferably, in the technical scheme, the height of the wear-resistant layer is 100mm, and the thickness of the wear-resistant layer is 5 mm.
Above-mentioned technical scheme is preferred, in order to guarantee to scrape the material in the wind channel into outer row mouth, not produce too much long-pending material. Meanwhile, the bottom and the side wall of the air duct can not generate scratch and friction due to larger materials. According to actual working conditions, the scraper plate keeps a 30mm installation clearance with the bottom and the side wall of the air duct.
According to the preferable technical scheme, the first arc-shaped rib plate and the second arc-shaped rib plate are welded on the same side of the supporting plate, the scraping plate is installed on the opposite side of the supporting plate, and the hardfacing layer faces downwards.
The utility model discloses the theory of operation: in the operation process of the vertical mill, part of materials are not blown back to the grinding disc by wind for secondary grinding and fall into the air duct. The scraping plate device is integrally arranged on the lower portion of the grinding disc and rotates with the grinding disc simultaneously, and along with the rotation of the scraping plate device, the scraping plate on the scraping plate frame can scrape materials accumulated at the bottom of the air duct into the outer discharge port and is sent into the mill again through the outer circulating system for grinding.
The utility model has the advantages of simple structure and reasonable design, can prevent effectively to scrape the fracture of flitch and the wearing and tearing in wind channel. Normal work under the more environment of powdery material and cubic material in the wind channel, scrape the increase of plate holder global rigidity, scrape the reasonable adjustable of flitch installation gap, reduced the wind channel effectively and worn the possibility of back system air leakage, thereby effectively prolonged the life who scrapes the flitch through increasing wear-resisting material, easy wearing and tearing spare manufacturing is easy, but quick replacement, thereby the personnel of being convenient for quick replacement in narrow and small space does not influence continuous production and guarantees the operating efficiency who immediately grinds.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all the modifications and equivalents of the technical spirit of the present invention to any simple modifications of the above embodiments are within the scope of the technical solution of the present invention.
Claims (5)
1. A vertical roller mill scraping plate device comprises a grinding disc, a scraping plate frame assembly arranged on the grinding disc and a scraping plate arranged on the scraping plate frame assembly; an annular space area with upper ventilation and lower discharge is formed between the grinding disc and the vertical roller mill air duct; the method is characterized in that: the middle part of the grinding disc is provided with an annular boss, and the boss is provided with two rows of threaded holes in the circumferential direction;
the scraper frame assembly comprises a supporting plate, a first arc-shaped rib plate, a second arc-shaped rib plate and a circumference connecting plate; the circumferential connecting plate is attached to the annular boss in the middle of the grinding disc, and two rows of through holes corresponding to the threaded holes in the boss are formed in the circumferential connecting plate; six supporting plates are uniformly welded on the outer circumference of the circumferential connecting plate; a first arc-shaped rib plate and three second arc-shaped rib plates are welded between each supporting plate and the circumferential connecting plate;
the scraping plate is provided with a scraping plate height adjusting long hole; the scraper plate is installed on a support plate on the scraper frame assembly through a fastening assembly.
2. The vertical roller mill scraper device according to claim 1, characterized in that: and a wear-resistant layer is formed on the basis of the raw material at the bottom of the scraping plate in a surfacing mode.
3. The vertical roller mill scraper device according to claim 2, characterized in that: the height of wearing layer is 100mm, and thickness is 5 mm.
4. The vertical roller mill scraper device according to claim 1, characterized in that: and the scraper plate keeps a 30mm installation gap with the bottom and the side wall of the air duct.
5. The vertical roller mill scraper device according to claim 1, characterized in that: the first arc-shaped rib plate and the second arc-shaped rib plate are welded on the same side of the supporting plate, the scraping plate is installed on the opposite side of the supporting plate, and the hardfacing layer faces downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921327841.8U CN210646644U (en) | 2019-08-15 | 2019-08-15 | Vertical roller mill scraping plate device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921327841.8U CN210646644U (en) | 2019-08-15 | 2019-08-15 | Vertical roller mill scraping plate device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210646644U true CN210646644U (en) | 2020-06-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921327841.8U Active CN210646644U (en) | 2019-08-15 | 2019-08-15 | Vertical roller mill scraping plate device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210646644U (en) |
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2019
- 2019-08-15 CN CN201921327841.8U patent/CN210646644U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20211216 Address after: 300021 2-2103, Tianhui square, intersection of Nanshi street and Fu'an street, Nanshi street, Heping District, Tianjin Patentee after: Tianjin Yicheng Group Co.,Ltd. Address before: 300131 No.7 Zhushan Road, Guangrong Road, Hongqiao District, Tianjin Patentee before: TIANJIN VOCATIONAL College OF MECHANICS AND ELECTRICITY |