A coal mill scraper safety support

Abstract

This utility model relates to the field of scraper support technology and discloses a safety support for a coal mill scraper, comprising: a scraper support installed at one end of the mounting plate, a mounting base installed at one end of the scraper support, a scraper body installed at one end of the mounting base, a protective component including a second fixing plate fixedly installed on the top of the two limiting plates and a first fixing plate fixedly installed on the top of the two connecting plates, a torsion spring fixedly installed between the two second fixing plates and the two first fixing plates, and an auxiliary component for protecting the connecting rod on the connecting rod, which can absorb the impact of coal blocks or the instantaneous vibration during equipment start-up and shutdown, reduce the rigid collision between the scraper and the coal mill housing, reduce noise and structural fatigue risk, reduce frictional loss between the scraper and the support, extend the service life of the scraper body and the support, ensure that the scraper is kept in the designed position, and improve the operating stability of the coal mill.

Description

Technical Field

[0001] This utility model relates to the field of scraper support technology, specifically a safety support for a coal mill scraper. Background Technology

[0002] The coal grinding process is the process of crushing coal and continuously increasing its surface area. To increase the new surface area, the binding forces between solid molecules must be overcome, which requires energy. Coal is ground into pulverized coal in a coal mill, mainly through three methods: crushing, impact crushing, and grinding. Among these, the crushing process consumes the least energy, while the grinding process consumes the most energy. Various coal mills combine two or three of the above methods in the pulverizing process, but the dominant method depends on the type of coal mill.

[0003] Application No. CN202022966368.7 proposes a novel scraper mechanism for stone and coal in a coal mill. This utility model can be used for cleaning stone and coal in a medium-speed coal mill. It has a simple structure, is easy to manufacture, has low cost, and long service life. It is very suitable for coal mill scrapers that cannot be frequently inspected due to load reasons, ensuring that the scraper can still work after the protection action, which is beneficial to improving the safety of the coal mill. However, when the above-mentioned scraper mechanism for stone and coal in a coal mill is in use, it is difficult to effectively generate anti-torsional force between the scraper and the support. As a result, the scraper is prone to collision with the support and the coal mill shell, leading to excessive wear of the scraper or a decrease in grinding efficiency. Over time, the scraper is prone to damage, thus affecting the service life of the scraper and reducing the reliability and safety of the coal mill operation. Utility Model Content

[0004] The purpose of this utility model is to provide a safety support for the scraper of a coal mill, which solves the problem in the background technology that it is difficult to reinforce the joint after connection, so that the joint needs to withstand huge repeated loads, and it is impossible to enhance its ductility and energy dissipation capacity in time. Under repeated seismic forces, the joint is prone to damage, which may lead to partial or even overall structural collapse.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A safety support for a coal mill scraper includes:

[0007] The mounting plate has a scraper bracket installed at one end, two limiting plates installed at one end of the scraper bracket, a mounting base installed at one end of the scraper bracket, a scraper body installed at one end of the mounting base, two connecting plates installed at the end of the mounting base near the limiting plates, and a connecting rod rotatably installed between the two limiting plates.

[0008] A protective component is located between the scraper bracket and the scraper body and is used to buffer and protect the scraper body. The protective component includes a second fixing plate fixedly installed on the top of the two limiting plates and a first fixing plate fixedly installed on the top of the two connecting plates. Torsion springs are fixedly installed between the two second fixing plates and the two first fixing plates. An auxiliary component for protecting the connecting rod is provided on the connecting rod.

[0009] Preferably, the auxiliary component includes two protective sleeves fitted on the connecting rod and receiving grooves opened on opposite sides of the two limiting plates. One end of the protective sleeve is located inside the receiving groove, and the two protective sleeves are respectively located between the two limiting plates and the two connecting plates. Both ends of the protective sleeve are provided with sealing components for sealing the receiving groove.

[0010] Preferably, the sealing assembly includes sealing gaskets mounted on the two protective sleeves and a protective cover fixedly mounted on one end of the two protective sleeves, the protective cover being located outside the limiting plate and in contact with the two limiting plates.

[0011] Preferably, a disassembly assembly is provided between the mounting plate and the scraper bracket. The disassembly assembly includes an upper fixing plate installed on the top of the scraper bracket and a lower fixing plate installed on the bottom of the scraper bracket. Both the upper fixing plate and the lower fixing plate are provided with placement grooves. A fixing assembly for fixing the upper fixing plate and the lower fixing plate to the scraper bracket is provided between the upper fixing plate and the lower fixing plate and the scraper bracket.

[0012] Preferably, the fixing component includes a threaded hole inside the upper fixing plate and a threaded groove inside the lower fixing plate. The top of the upper fixing plate is screwed with an mounting screw, and the bottom of the lower fixing plate is screwed with a fixing screw. The mounting screw and the fixing screw pass through the threaded hole and the threaded groove, respectively, and extend into the interior of the scraper bracket.

[0013] Preferably, one end of the mounting base is provided with a fixing groove, one end of the two connecting plates is located inside the fixing groove, and right-angle pieces are fixedly installed on the outer walls of the two connecting plates. One end of the two right-angle pieces is fixedly connected to the mounting base, and a limit screw is screwed between the mounting base and the scraper body.

[0014] Preferably, the bottom of the mounting plate is fixed with two connecting plates, one end of the connecting plate is attached to the bottom of the lower fixing plate, and one end of the fixing screw passes through the connecting plate and contacts the connecting plate.

[0015] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0016] This invention, through the inclusion of protective components, can absorb the impact of coal blocks or the instantaneous vibration during equipment start-up and shutdown, reduce rigid collisions between the scraper and the mill housing, lower noise and structural fatigue risks, maintain constant contact pressure between the scraper and the grinding disc or cylinder, avoid excessive wear or decreased grinding efficiency due to coal quantity fluctuations, reduce frictional losses between the scraper and the support, extend the service life of the scraper body and support, effectively suppress torsional failure of the scraper during mill operation, ensure the scraper remains in the designed position, improve the operational stability of the mill, and enable the scraper to adapt more flexibly to changes in working conditions, avoiding damage due to sudden changes. It solves the pain points of traditional rigid scraper systems such as rapid wear, easy jamming, and frequent maintenance, significantly improving the reliability, economy, and safety of mill operation. At the same time, it can prevent coal dust from entering the internal parts of the connecting rod and affecting its use, making it more convenient for the scraper to scrape coal blocks. Attached Figure Description

[0017] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0018] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0019] Figure 3 This is a structural diagram of the present invention during disassembly;

[0020] Figure 4 This is a structural schematic diagram of the right-angle component of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the protective component of this utility model;

[0022] Figure 6 This is a structural schematic diagram of the disassembly and assembly components of this utility model.

[0023] The components include: 1. Mounting plate; 2. Scraper bracket; 3. Connecting plate; 4. Scraper body; 5. Protective components; 6. Disassembly and assembly components; 7. Connecting plate; 8. Limiting plate; 9. Mounting base; 10. Limiting screw; 11. Right-angle piece; 12. Connecting rod;

[0024] 51. Protective sleeve; 52. Fixing plate one; 53. Fixing plate two; 54. Torsion spring; 55. Protective cover; 56. Sealing gasket;

[0025] 61. Upper fixing plate; 62. Lower fixing plate; 63. Mounting screws; 64. Fixing screws. Detailed Implementation

[0026] 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.

[0027] Please refer to Figure 1 - Figure 3 A safety support for a scraper of a coal mill includes: a mounting plate 1, a scraper support 2 mounted on one end of the mounting plate 1, two limiting plates 8 mounted on one end of the scraper support 2, a mounting seat 9 mounted on one end of the scraper support 2, a scraper body 4 mounted on one end of the mounting seat 9, two connecting plates 7 mounted on the end of the mounting seat 9 near the limiting plates 8, and a connecting rod 12 rotatably mounted between the two limiting plates 8.

[0028] Please refer to Figure 5 The protective component 5 is located between the scraper bracket 2 and the scraper body 4 and is used to buffer and protect the scraper body 4. The protective component 5 includes a second fixing plate 53 fixedly installed on the top of the two limiting plates 8 and a first fixing plate 52 fixedly installed on the top of the two connecting plates 7. Torsion springs 54 are fixedly installed between the two second fixing plates 53 and the two first fixing plates 52. An auxiliary component for protecting the connecting rod 12 is provided on the connecting rod 12. The auxiliary component includes two protective sleeves 51 sleeved on the connecting rod 12 and a receiving groove opened on the opposite side of the two limiting plates 8. One end of the protective sleeve 51 is inside the receiving groove. The two protective sleeves 51 are respectively located between the two limiting plates 8 and the two connecting plates 7. Both ends of the protective sleeves 51 are provided with sealing components for sealing the receiving groove.

[0029] The protective sleeve 51 is fitted onto the connecting rod 12. During the scraping of coal blocks and coal powder by the scraper body 4, when coal blocks collide with the scraper body 4, the scraper body 4 and the first fixing plate 52 rotate with the connecting rod 12. Simultaneously, the first fixing plate 52 and the second fixing plate 53 pull the torsion spring 54, thereby achieving anti-torsional force on the scraper body 4, improving its service life, and reducing frictional loss between the scraper body 4 and the mounting plate 1, extending the service life of both. This effectively suppresses torsional failure of the scraper body 4 during the operation of the coal mill, ensuring that the scraper body 4 remains in its designed position, improving the operational stability of the coal mill. Furthermore, during the rotation of the scraper body 4 and the connecting rod 12, the protective sleeve 51, the sealing gasket 56, and the protective cover 55 effectively prevent coal powder and coal blocks from entering the interior of the connecting rod 12, thereby improving the efficiency of the connecting rod 12 and the scraper body 4.

[0030] Furthermore, such as Figure 5 As shown, the sealing assembly includes sealing gaskets 56 installed on two protective sleeves 51 and a protective cover 55 fixedly installed on one end of the two protective sleeves 51. The protective cover 55 is located outside the limiting plate 8 and contacts the two limiting plates 8. Based on this, the protective cover 55 and the sealing gaskets 56 can effectively prevent coal dust from entering the interior of the protective sleeves 51, making the connecting rod 12 rotate more convenient and avoiding the difficulty of rotating the connecting rod 12 due to coal dust.

[0031] Furthermore, such as Figure 4 As shown, a fixing groove is provided at one end of the mounting base 9, and one end of each of the two connecting plates 7 is located inside the fixing groove. Right-angle pieces 11 are fixedly installed on the outer walls of the two connecting plates 7. One end of each right-angle piece 11 is fixedly connected to the mounting base 9. A limit screw 10 is screwed between the mounting base 9 and the scraper body 4. Based on this, the right-angle pieces 11 can effectively fix the connecting plates 7 and the mounting base 9, making the fixation between the connecting plates 7 and the mounting base 9 more stable, effectively preventing the connecting plates 7 from falling off the mounting base 9, and improving the safety of the connecting plates 7 and the mounting base 9 during use.

[0032] Please also refer to... Figure 6A disassembly assembly 6 is provided between the mounting plate 1 and the scraper bracket 2. The disassembly assembly 6 includes an upper fixing plate 61 installed on the top of the scraper bracket 2 and a lower fixing plate 62 installed on the bottom of the scraper bracket 2. Both the upper fixing plate 61 and the lower fixing plate 62 have placement grooves. A fixing assembly is provided between the upper fixing plate 61 and the lower fixing plate 62 and the scraper bracket 2 to fix the upper fixing plate 61 and the lower fixing plate 62. The fixing assembly includes a threaded hole opened in the upper fixing plate 61 and a threaded groove opened in the lower fixing plate 62. The top of the upper fixing plate 61 is screwed with a mounting screw 63, and the bottom of the lower fixing plate 62 is screwed with a fixing screw 64. The mounting screw 63 and the fixing screw 64 pass through the threaded hole and the threaded groove respectively and extend into the interior of the scraper bracket 2. Two connecting plates 3 are fixed to the bottom of the mounting plate 1. One end of the connecting plate 3 is attached to the bottom of the lower fixing plate 62. One end of the fixing screw 64 is... The end of the connecting plate 3 passes through and contacts the connecting plate 3. Based on this, when it is necessary to disassemble and assemble the scraper bracket 2 and the mounting plate 1, the upper fixing plate 61 and the lower fixing plate 62 are placed at the top and bottom of the scraper bracket 2, respectively. Then, the bottom of the connecting plate 3 is attached to the bottom of the lower fixing plate 62. Then, the operator aligns the fixing screw 64 and the mounting screw 63 with the threaded groove and the threaded hole, respectively. Then, the operator rotates the mounting screw 63 and the fixing screw 64 to realize the relative movement of the upper fixing plate 61 and the lower fixing plate 62. The mounting screw 63 and the fixing screw 64 are screwed into the interior of the scraper bracket 2, thereby realizing the installation between the upper fixing plate 61, the lower fixing plate 62 and the scraper bracket 2, so that the scraper bracket 2 and the scraper body 4 can be used. Then, the upper fixing plate 61 and the lower fixing plate 62 can be disassembled by rotating the mounting screw 63 and the fixing screw 64 in the opposite direction, thereby realizing the disassembly and assembly of the connecting plate 3 and the scraper bracket 2.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coal mill flight safety support, characterised in that, include: Mounting plate (1), one end of which is mounted with scraper bracket (2), one end of which is mounted with two limiting plates (8), one end of which is mounted with mounting base (9), one end of which is mounted with scraper body (4), and one end of which is mounted with two connecting plates (7) near the limiting plate (8), and a connecting rod (12) is rotatably mounted between the two limiting plates (8); The protective component (5) is located between the scraper bracket (2) and the scraper body (4) and is used to buffer and protect the scraper body (4). The protective component (5) includes a second fixing plate (53) fixedly installed on the top of the two limiting plates (8) and a first fixing plate (52) fixedly installed on the top of the two connecting plates (7). Torsion springs (54) are fixedly installed between the two second fixing plates (53) and the two first fixing plates (52). An auxiliary component for protecting the connecting rod (12) is provided on the connecting rod (12).

2. A coal mill scraper safety support according to claim 1, characterised in that: The auxiliary components include two protective sleeves (51) sleeved on the connecting rod (12) and receiving grooves opened on opposite sides of the two limiting plates (8). One end of the protective sleeve (51) is inside the receiving groove, and the two protective sleeves (51) are respectively located between the two limiting plates (8) and the two connecting plates (7). Both ends of the protective sleeve (51) are provided with sealing components for sealing the receiving groove.

3. A coal mill scraper safety support according to claim 2, characterised in that: The sealing assembly includes sealing gaskets (56) mounted on the two protective sleeves (51) and a protective cover (55) fixedly mounted on one end of the two protective sleeves (51), the protective cover (55) being located outside the limiting plate (8) and in contact with the two limiting plates (8).

4. A coal mill scraper safety support according to claim 1, characterised in that: A disassembly assembly (6) is provided between the mounting plate (1) and the scraper bracket (2). The disassembly assembly (6) includes an upper fixing plate (61) installed on the top of the scraper bracket (2) and a lower fixing plate (62) installed on the bottom of the scraper bracket (2). The upper fixing plate (61) and the lower fixing plate (62) are both provided with placement grooves. A fixing component is provided between the upper fixing plate (61) and the lower fixing plate (62) and the scraper bracket (2) for fixing the upper fixing plate (61) and the lower fixing plate (62).

5. A coal mill scraper safety support according to claim 4, characterised in that: The fixing assembly includes a threaded hole inside the upper fixing plate (61) and a threaded groove inside the lower fixing plate (62). The top of the upper fixing plate (61) is screwed with an mounting screw (63), and the bottom of the lower fixing plate (62) is screwed with a fixing screw (64). The mounting screw (63) and the fixing screw (64) pass through the threaded hole and the threaded groove respectively and extend into the interior of the scraper bracket (2).

6. A coal mill scraper safety support according to claim 1, characterised in that: One end of the mounting base (9) is provided with a fixing groove, and one end of the two connecting plates (7) is located inside the fixing groove. Right-angle pieces (11) are fixedly installed on the outer walls of the two connecting plates (7). One end of the two right-angle pieces (11) is fixedly connected to the mounting base (9). Limit screws (10) are screwed between the mounting base (9) and the scraper body (4).

7. A coal mill scraper safety support according to claim 5, characterised in that: The bottom of the mounting plate (1) is fixed with two connecting plates (3). One end of the connecting plate (3) is attached to the bottom of the lower fixing plate (62). One end of the fixing screw (64) passes through the connecting plate (3) and contacts the connecting plate (3).

Images