Grinding roller head protection plate of coal mill

Abstract

The utility model discloses a coal mill grinding roller head guard plate, which relates to the technical field of coal mills, and comprises a mounting base and a coal mill head, the output end of the mounting base is fixedly connected with a power shaft, the power shaft is sleeved with a protection mechanism and a fixing mechanism, the protection mechanism comprises a support bearing, a fixing ring and a lower protection plate, the fixing mechanism comprises a connecting protection plate and a connecting ring, the bottom of the connecting protection plate is fixedly connected with a connecting rod, the power shaft is fixed through the mounting base, the power shaft drives the coal grinding head to rotate, coal briquettes in the coal mill are ground, the lower protection plate is fixed through the supporting bearing and the fixing ring, and the coal grinding head is fixed through the supporting bearing and the fixing ring. The power shaft is protected through the lower protection plate, the connecting rod is inserted into the connecting ring, the connecting protection plate and the lower protection plate are connected together, the power shaft is wrapped and covered through the connecting protection plate and the lower protection plate, the power shaft is prevented from being exposed to the outside, and the service life of the grinding roller head is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of coal mill technology, specifically a coal mill roller head guard plate. Background Technology

[0002] A coal mill is a machine that crushes and grinds coal into pulverized coal; it is an important auxiliary equipment for pulverized coal boilers. Types include vertical mills, high-pressure suspension roller mills, medium-speed micro-powder mills, high-pressure trapezoidal mills, and Raymond mills. The coal grinding process involves the crushing of coal and the continuous increase of its surface area. Coal is ground into pulverized coal in a coal mill primarily through three methods: crushing, impact crushing, and grinding.

[0003] When the grinding roller head grinds coal, a hot air stream blows the coal powder upwards out of the coal mill. As the coal powder is blown, the air carries the coal particles to impact the grinding roller, which easily increases the wear of the grinding roller and reduces the service life of the grinding roller head. To address this issue, we provide a coal mill grinding roller head guard plate. Utility Model Content

[0004] The purpose of this utility model is to provide a protective plate for the grinding roller head of a coal mill to solve the problems mentioned in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coal mill roller head guard plate, comprising a mounting base and a coal mill head, wherein a power shaft is fixedly connected to the output end of the mounting base, and the power shaft is fixedly connected to the coal mill head; a protective mechanism and a fixing mechanism are sleeved on the outside of the power shaft; the protective mechanism includes a support bearing, a fixing ring, and a lower protective plate, and the support bearing is engaged with the coal mill head; the fixing mechanism includes a connecting guard plate and a connecting ring, and the connecting ring is fixedly connected to the lower protective plate; a connecting rod is fixedly connected to the bottom of the connecting guard plate, and the connecting rod is engaged with the connecting ring.

[0006] Preferably, a fixing bolt is fitted inside the fixing ring, and the fixing bolt is threadedly connected to the mounting base. A support rod is fixedly connected inside the lower protective plate. The fixing ring is fixedly installed on the surface of the mounting base by the fixing bolt, which improves the convenience of fixing and installing the fixing ring.

[0007] Preferably, a first limiting groove is provided at the bottom of the fixing ring, and a first limiting block is fixedly connected inside the lower protective plate. The first limiting block is slidably connected to the first limiting groove. The first limiting block and the first limiting groove are interlocked to fix one end of the lower protective plate to the fixing ring.

[0008] Preferably, a first buffer pad is fixedly connected inside the lower protective plate, and a second buffer pad is fixedly connected inside the connecting protective plate. Both the first and second buffer pads abut against each other with the support bearing. The first and second buffer pads support and fix the support bearing and can offset the vibration generated by the grinding of the coal head.

[0009] Preferably, the surface of the fixing ring is provided with a second limiting groove, and a second limiting block is fixedly connected inside the connecting guard plate, and the second limiting block is engaged with the second limiting groove. Through the second limiting block and the second limiting groove, one end of the connecting guard plate is fixed together with the fixing ring.

[0010] Preferably, there are two connecting guard plates, and the top ends of the two connecting guard plates are staggered and snapped together. The top ends of the two connecting guard plates are assembled and connected by connecting bolts. The connecting bolts are perpendicular to the second limiting block, which improves the stability of the connection of the connecting guard plates.

[0011] Preferably, a protective cover is fitted over the connecting bolt, and one end of the protective cover is slidably connected to the connecting guard plate. The other end of the protective cover is fixedly connected to a fixing buckle, which engages with the connecting guard plate. The fixing buckle positions the protective cover and fixes it to the surface of the connecting guard plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This application uses a mounting base to fix the power shaft and provide power to the power shaft, causing the power shaft to drive the coal grinding head to rotate and grind the coal inside the coal mill. The lower protective plate is fixed by a support bearing and a fixing ring. The lower protective plate protects the power shaft, reduces the friction of the blown coal powder particles on the power shaft, and improves the service life of the power shaft. A connecting rod is inserted into the connecting ring to fix the connecting guard plate, thus connecting the connecting guard plate and the lower protective plate together. The connecting guard plate and the lower protective plate wrap and cover the power shaft, preventing the power shaft from being exposed inside the coal mill and improving the service life of the power shaft.

[0014] 2. This application uses fixing bolts to fix the fixing ring to the surface of the mounting base, improving the convenience of fixing the ring. The first limiting block and the first limiting groove interlock to fix one end of the lower protective plate to the fixing ring, improving the stability of the lower protective plate installation. The first and second buffer pads support and fix the support bearing, and can also offset the vibration generated by the coal grinding head, improving the stability of the protective device operation. The second limiting block and the second limiting groove fix one end of the connecting protective plate to the fixing ring, improving the stability of the connecting protective plate operation. The two connecting protective plates are connected together by connecting bolts, with the connecting bolts perpendicular to the second limiting block, improving the stability of the connecting protective plate connection. The protective cover is positioned by fixing buckles and fixed to the surface of the connecting protective plate. The protective cover protects the connecting bolts, improving their service life. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a coal mill roller head guard plate according to the present invention;

[0016] Figure 2 This is an exploded view of the overall structure of a coal mill roller head guard plate according to the present invention;

[0017] Figure 3 This is a cross-sectional view of the protective mechanism of the grinding roller head guard plate of a coal mill according to the present invention.

[0018] Figure 4 This is an exploded structural diagram of the fixing mechanism for the grinding roller head guard plate of a coal mill according to the present invention.

[0019] Figure 5 This utility model relates to a protective plate for the grinding roller head of a coal mill. Figure 4 Enlarged schematic diagram of the structure at point A in the middle.

[0020] The following are the labeling elements in the diagram: 1. Mounting base; 2. Power shaft; 3. Coal grinding head; 4. Protective mechanism; 401. Support bearing; 402. Fixing ring; 403. Fixing bolt; 404. Lower protective plate; 405. Support rod; 406. First buffer pad; 407. First limiting groove; 408. First limiting block; 5. Fixing mechanism; 501. Connecting guard plate; 502. Connecting ring; 503. Connecting rod; 504. Second limiting groove; 505. Second limiting block; 506. Second buffer pad; 507. Connecting bolt; 508. Protective cover; 509. Fixing buckle. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example: Figure 1 - Figure 5 As shown, this utility model provides a technical solution for a coal mill grinding roller head guard plate, including a mounting base 1 and a coal grinding head 3. The output end of the mounting base 1 is fixedly connected to a power shaft 2, and the power shaft 2 is fixedly connected to the coal grinding head 3. The mounting base 1 fixes the power shaft 2 and provides power to the power shaft 2, so that the power shaft 2 drives the coal grinding head 3 to rotate and grind the coal blocks inside the coal mill.

[0023] The mounting base 1, power shaft 2, and coal grinding head 3 are assembled into a coal mill grinding roller head, and all of them are existing equipment. This application will not go into detail about their detailed parameters and models.

[0024] The power shaft 2 is externally fitted with a protective mechanism 4 and a fixing mechanism 5. The protective mechanism 4 includes a support bearing 401, a fixing ring 402 and a lower protective plate 404. The support bearing 401 is engaged with the coal grinding head 3. The lower protective plate 404 is fixed by the support bearing 401 and the fixing ring 402. The lower protective plate 404 protects the power shaft 2, reduces the friction of the blown coal powder particles on the power shaft 2, and improves the service life of the power shaft 2.

[0025] The fixing ring 402 is fitted with a fixing bolt 403 inside, and the fixing bolt 403 is threadedly connected to the mounting base 1. The lower protective plate 404 is fixedly connected with a support rod 405 inside. The fixing ring 402 is fixedly installed on the surface of the mounting base 1 by the fixing bolt 403, which improves the convenience of fixing the fixing ring 402.

[0026] The bottom of the fixing ring 402 is provided with a first limiting groove 407. The lower protective plate 404 is fixedly connected to a first limiting block 408, and the first limiting block 408 is slidably connected to the first limiting groove 407. By interlocking the first limiting block 408 and the first limiting groove 407, one end of the lower protective plate 404 is fixedly connected to the fixing ring 402, thereby improving the stability of the installation of the lower protective plate 404.

[0027] The lower protective plate 404 is internally fixedly connected to a first buffer pad 406, and the connecting protective plate 501 is internally fixedly connected to a second buffer pad 506. Both the first buffer pad 406 and the second buffer pad 506 are in contact with the support bearing 401. The first buffer pad 406 and the second buffer pad 506 support and fix the support bearing 401, and can also offset the vibration generated by the grinding of the coal head 3, thereby improving the stability of the protective device operation.

[0028] The first buffer pad 406 and the second buffer pad 506 are high-temperature resistant buffer materials. This application will not elaborate on their detailed parameters and models.

[0029] The fixing mechanism 5 includes a connecting guard plate 501 and a connecting ring 502. The connecting ring 502 is fixedly connected to the lower guard plate 404. A connecting rod 503 is fixedly connected to the bottom of the connecting guard plate 501. The connecting rod 503 is engaged with the connecting ring 502. The connecting rod 503 is inserted into the connecting ring 502 to fix the connecting guard plate 501, thereby connecting the connecting guard plate 501 and the lower guard plate 404 together. The connecting guard plate 501 and the lower guard plate 404 wrap and cover the power shaft 2 to prevent the power shaft 2 from being exposed inside the coal mill and to improve the service life of the power shaft 2.

[0030] The surface of the fixed ring 402 is provided with a second limiting groove 504, and a second limiting block 505 is fixedly connected inside the connecting guard plate 501. The second limiting block 505 is engaged with the second limiting groove 504. Through the second limiting block 505 and the second limiting groove 504, one end of the connecting guard plate 501 is fixed together with the fixed ring 402, thereby improving the stability of the connecting guard plate 501 during operation.

[0031] There are two connecting guard plates 501, and the top ends of the two connecting guard plates 501 are staggered and snapped together. The top ends of the two connecting guard plates 501 are assembled and connected by connecting bolts 507. The two connecting guard plates 501 are connected together by connecting bolts 507, and the connecting bolts 507 are perpendicular to the second limiting block 505, which improves the stability of the connection of the connecting guard plates 501.

[0032] A protective cover 508 is fitted over the connecting bolt 507. One end of the protective cover 508 is slidably connected to the connecting guard plate 501, and the other end of the protective cover 508 is fixedly connected to a fixing buckle 509. The fixing buckle 509 is engaged with the connecting guard plate 501. By inserting one end of the protective cover 508 into the connecting guard plate 501 and engaging with the connecting guard plate 501 through the fixing buckle 509, the protective cover 508 is fixed to the surface of the connecting guard plate 501 through two sets of staggered fixing methods. The protective cover 508 protects the connecting bolt 507 and improves the service life of the connecting bolt 507.

[0033] In use, this utility model is as follows: First, the fixing ring 402 is fixedly installed on the surface of the mounting base 1 using fixing bolts 403, and the support bearing 401 is sleeved on the middle of the coal grinding head 3. Then, the first limiting block 408 is inserted into the first limiting groove 407, and the first buffer pad 406 abuts against the surface of the support bearing 401 to position the lower protective plate 404. This controls the two connecting protective plates 501 to move closer to each other, so that the connecting rod 503 is inserted into the connecting ring 502, and the second limiting block 505 and the second limiting groove 504 are engaged to position the two connecting protective plates 501. The lower protective plate 404 is fixed by the connecting guard plate 501. The two connecting guard plates 501 are connected together by the connecting bolts 507. The protective cover 508 is pulled down so that one end of the protective cover 508 is inserted into the connecting guard plate 501 and is locked with the connecting guard plate 501 by the fixing buckle 509, thus fixing the protective cover 508 and protecting the connecting bolts 507, extending the service life of the connecting bolts 507. The connecting guard plate 501 and the lower protective plate 404 wrap and cover the power shaft 2 to prevent the power shaft 2 from being exposed inside the coal mill and extend the service life of the grinding roller head.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A mill roller head guard plate for a coal mill, comprising a mounting base (1) and a mill head (3), characterized in that: The output end of the mounting base (1) is fixedly connected to a power shaft (2), and the power shaft (2) is fixedly connected to the coal grinding head (3). The power shaft (2) is fitted with a protective mechanism (4) and a fixing mechanism (5). The protective mechanism (4) includes a support bearing (401), a fixing ring (402) and a lower protective plate (404). The support bearing (401) is engaged with the coal grinding head (3). The fixing mechanism (5) includes a connecting guard plate (501) and a connecting ring (502). The connecting ring (502) is fixedly connected to the lower protective plate (404). The bottom of the connecting guard plate (501) is fixedly connected to a connecting rod (503), and the connecting rod (503) is engaged with the connecting ring (502).

2. The mill roller head guard plate of a coal mill according to claim 1, characterized in that: The fixing ring (402) is fitted with a fixing bolt (403) inside, and the fixing bolt (403) is threadedly connected to the mounting base (1). The lower protective plate (404) is fixedly connected with a support rod (405).

3. A mill roller head guard plate according to claim 1, characterized in that: The bottom of the fixed ring (402) is provided with a first limiting groove (407), and the lower protective plate (404) is fixedly connected with a first limiting block (408), and the first limiting block (408) is slidably connected to the first limiting groove (407).

4. A mill roller head guard plate according to claim 1, characterized in that: The lower protective plate (404) is fixedly connected to a first buffer pad (406), and the connecting protective plate (501) is fixedly connected to a second buffer pad (506), and both the first buffer pad (406) and the second buffer pad (506) are in contact with the supporting bearing (401).

5. A mill roller head guard plate according to claim 1, characterized in that: The surface of the fixing ring (402) is provided with a second limiting groove (504), and the inside of the connecting guard plate (501) is fixedly connected with a second limiting block (505), and the second limiting block (505) is engaged with the second limiting groove (504).

6. A mill roller head guard plate according to claim 1, characterized in that: Two connecting guard plates (501) are provided, and the top ends of the two connecting guard plates (501) are staggered and snapped together. The top ends of the two connecting guard plates (501) are assembled and connected by connecting bolts (507).

7. A mill roller head guard plate according to claim 6, characterized in that: The connecting bolt (507) is covered with a protective cover (508), and one end of the protective cover (508) is slidably connected to the connecting guard plate (501). The other end of the protective cover (508) is fixedly connected with a fixing buckle (509), and the fixing buckle (509) is engaged with the connecting guard plate (501).

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