Thermal energy power coal grinding mechanism of power plant

Abstract

The invention provides a power plant heat energy power coal grinding mechanism, and belongs to the technical field of coal grinding, the power plant heat energy power coal grinding mechanism comprises a collection box, a storage box, a material pushing assembly, a rotating disc, a conical coal grinding assembly, a driving assembly, a scraper blade and a second motor, the storage box is installed above the collection box and used for storing coal to be ground, one end of the storage box is open, and the other end of the storage box is open; the storage box is provided with an opening, the rotary disc is arranged at the end, provided with the opening, of the storage box, the pushing assembly is arranged in the storage box and used for applying pushing force towards the opening direction to the to-be-ground coal in the storage box, so that the to-be-ground coal is tightly attached to the rotary disc, and the conical coal grinding assemblies are multiple in number. Compared with the prior art, when the rotary table drives the conical coal grinding assemblies to rotate so as to grind and crush coal, coal slag, clamped among the conical coal grinding assemblies, on one side of the rotary table can be automatically cleaned online, and the coal slag cleaning device has the advantages of being good in coal slag cleaning effect and high in coal grinding and crushing efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of coal grinding, in particular to a thermal power coal grinding mechanism for a power plant. Background Art

[0002] The coal grinding mechanism of the thermal power of a power plant refers to the equipment used in the power plant to grind coal into fine powder and supply it to the combustion system.

[0003] When existing coal grinding mechanisms grind and crush coal, most of them rely on the power mechanism to rotate the grinding disc, and rely on the friction and shearing effect between a number of tooth-like protrusions on one side of the grinding disc and the coal to grind and crush the coal. After the grinding disc has ground and crushed the coal for a certain period of time, the several tooth-like protrusions on one side of the grinding disc will be filled with coal slag, and the presence of the coal slag will cause the tooth-like protrusions to reduce the subsequent grinding effect of the coal. Therefore, the coal slag on one side of the grinding disc needs to be cleaned regularly. However, when cleaning the coal slag on one side of the grinding disc, on the one hand, the coal grinding mechanism needs to stop running, which affects the coal grinding efficiency. On the other hand, since the coal slag is stuck relatively tightly between the several tooth-like protrusions, it is relatively difficult to clean the coal slag. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a thermal power coal grinding mechanism for a power plant.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A thermal power coal grinding mechanism for a power plant comprises a collecting box, a storage box, a material pushing assembly, a rotating disk, a conical coal grinding assembly, a driving assembly, a scraper and a second motor. The storage box is installed above the collecting box and is used to store the coal to be ground. One end of the storage box is open. The turntable is arranged at an open end of the storage box. The pushing assembly is arranged inside the storage box, and is used to apply a thrust toward the opening to the coal to be ground inside the storage box, so that the coal to be ground is closely attached to the turntable. The conical coal grinding components are provided in a plurality of groups, and the plurality of conical coal grinding components penetrate the turntable and movably cooperate with the turntable. The second motor is arranged on the side of the turntable, and is used to drive the turntable to rotate. When the turntable rotates, it drives the plurality of conical coal grinding assemblies to rotate, so as to grind the coal to be ground. The driving assembly is arranged on one side of the turntable. When the conical coal grinding assembly in a certain area of ​​the turntable is rotated away from the open position of the storage box, the driving assembly is used to drive the conical coal grinding assembly in the area to move relative to the turntable, so that the surface of the turntable facing the storage box remains flat. One end of the scraper is fixedly connected to the collection box, and the other end is in contact with a surface of the rotating disk facing the storage box.

[0006] As a further improvement of the present invention: the conical coal grinding assembly comprises a rod and a cone, The turntable is provided with a through hole, the rod passes through the turntable from the through hole, and the cone is fixedly arranged at one end of the rod facing the storage box.

[0007] As a further improvement of the present invention: the driving assembly includes an abutment disk, The abutment plate is fixedly mounted on the inner wall of the collection box, the abutment plate is arranged on a side of the turntable away from the storage box, a groove is provided on a side of the abutment plate facing the turntable, the second motor is fixedly mounted on the side wall of the abutment plate, and an output shaft of the second motor passes through the abutment plate and is connected to the turntable. The scraper is arranged opposite to the groove, An annular stopper is fixedly provided on the outside of one end of the rod away from the cone, and the annular stopper is connected to the turntable via a second elastic member, which is used to provide elastic support for the rod so that the end of the rod away from the cone abuts against the side wall of the abutment plate.

[0008] As a further improvement of the present invention: the edge of the groove is in an arc-shaped structure, and the end of the rod away from the cone is in a hemispherical structure.

[0009] As a further improvement of the present invention: the pusher assembly includes a first elastic member and a push plate, The push plate is movably arranged inside the storage box. One end of the first elastic member is connected to the inner wall of the storage box, and the other end is connected to the push plate, so as to provide elastic support for the push plate.

[0010] As a further improvement of the present invention: the pusher assembly further includes a first motor, a reel and a pull rope. The first motor is fixedly mounted on the outer wall of the storage box, the reel is arranged at the output end of the first motor, one end of the pull rope is wound around the outside of the reel, and the other end extends into the storage box and is connected to the push plate.

[0011] As a further improvement of the present invention: the side wall of the storage box is fixedly connected to the collection box via a plurality of support rods.

[0012] Compared with the prior art, the present invention has the following beneficial effects: In the embodiment of the present invention, when the coal needs to be ground and pulverized, the coal to be ground can be placed inside a storage box, and then a pushing force toward the opening is applied to the coal inside the storage box by a pushing assembly, so that the coal extends out from the opening of the storage box and is tightly attached to the turntable, and then a second motor is used to drive the turntable to rotate, thereby driving a plurality of conical coal grinding assemblies to rotate. When the plurality of conical coal grinding assemblies rotate, the coal can be ground and pulverized through friction and shearing with the coal, and the pulverized coal falls into a collection box for storage; when the conical coal grinding assemblies in a certain area of ​​the turntable grind the coal, as the turntable continues to rotate, the conical coal grinding assemblies in this area rotate away from the open end of the storage box, and at this time, the conical coal grinding assemblies are driven to grind the coal. The component drives the conical coal grinding component in this area to move relative to the turntable, so that one end of the conical coal grinding component no longer protrudes from the turntable surface, thereby keeping the turntable surface flat; then through the relative movement of the scraper with the turntable when the turntable rotates, the scraper can scrape the flat surface of one side of the turntable to scrape off the coal slag remaining on the turntable surface, thereby preventing excessive coal slag attached to one side of the turntable from affecting the subsequent coal grinding and crushing effect. Compared with the prior art, when the turntable drives several conical coal grinding components to rotate to grind and crush the coal, the coal slag stuck between several conical coal grinding components on one side of the turntable can be automatically cleaned online, which has the advantages of good coal slag cleaning effect and high coal grinding and crushing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the structure of a thermal power coal grinding mechanism in a power plant Figure 1 ; Figure 2 A schematic diagram of the structure of a thermal power coal grinding mechanism in a power plant Figure 2 ; Figure 3 It is a structural schematic diagram of the second component in a thermal power coal grinding mechanism of a power plant; Figure 4 for Figure 1 A magnified schematic diagram of the middle A area; Figure 5 for Figure 2 A magnified schematic diagram of the middle B area; In the figure: 10-collection box, 20-storage box, 201-support rod, 30-pushing assembly, 301-first motor, 302-reel, 303-pull rope, 304-first elastic member, 305-push plate, 40-turntable, 401-through hole, 50-conical coal grinding assembly, 501-rod, 502-second elastic member, 503-annular stopper, 504-cone, 60-driving assembly, 601-abutment disk, 602-groove, 70-scraper, 80-second motor. DETAILED DESCRIPTION

[0014] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0015] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0016] See also Figure 1 as well as Figure 2 The present embodiment provides a thermal power coal grinding mechanism of a power plant, including a collecting box 10, a storage box 20, a pushing assembly 30, a turntable 40, a conical coal grinding assembly 50, a driving assembly 60, a scraper 70 and a second motor 80. The storage box 20 is installed above the collecting box 10 and is used to store the coal to be ground. One end of the storage box 20 is open. The turntable 40 is arranged at the open end of the storage box 20. The pushing assembly 30 is arranged inside the storage box 20 and is used to apply a thrust toward the open direction to the coal to be ground inside the storage box 20, so that the coal to be ground is closely attached to the turntable 40. The conical coal grinding assembly 50 is provided with a plurality of groups, and a plurality of the conical coal grinding assemblies 50 pass through the turntable 40 and are connected to the The turntable 40 is movably cooperated, and the second motor 80 is arranged on the side of the turntable 40, and is used to drive the turntable 40 to rotate. When the turntable 40 rotates, it drives the plurality of conical coal grinding assemblies 50 to rotate to grind the coal to be ground. The driving assembly 60 is arranged on one side of the turntable 40. When the conical coal grinding assemblies 50 in a certain area on the turntable 40 are rotated away from the open position of the storage box 20, the driving assembly 60 is used to drive the conical coal grinding assemblies 50 in the area to move relative to the turntable 40, so that the surface of the turntable 40 facing the storage box 20 remains flat, and one end of the scraper 70 is fixedly connected to the collecting box 10, and the other end is attached to the surface of the turntable 40 facing the storage box 20.

[0017] When the coal needs to be ground and pulverized, the coal to be ground can be placed inside the storage box 20, and then the pushing assembly 30 is used to apply a thrust toward the opening direction to the coal inside the storage box 20, so that the coal extends out from the opening of the storage box 20 and is tightly attached to the turntable 40, and then the second motor 80 is used to drive the turntable 40 to rotate, thereby driving the plurality of conical coal grinding assemblies 50 to rotate. When the plurality of conical coal grinding assemblies 50 rotate, the coal can be ground and pulverized through friction and shearing with the coal, and the pulverized coal falls into the collection box 10 for storage; when the conical coal grinding assembly 50 in a certain area on the turntable 40 grinds the coal, As the turntable 40 continues to rotate, the conical coal grinding assembly 50 in this area rotates away from the open end of the storage box 20. At this time, the driving assembly 60 drives the conical coal grinding assembly 50 in this area to move relative to the turntable 40, so that one end of the conical coal grinding assembly 50 no longer protrudes from the surface of the turntable 40, thereby keeping the surface of the turntable 40 flat. Then, through the relative movement of the scraper 70 with the turntable 40 when the turntable 40 rotates, the scraper 70 can scrape the flat surface of one side of the turntable 40 to smoothly scrape off the coal slag remaining on the surface of the turntable 40, thereby preventing excessive coal slag attached to one side of the turntable 40 from affecting the subsequent coal grinding and crushing effect.

[0018] See also Figure 1 as well as Figure 5 In one embodiment, the conical coal grinding assembly 50 includes a rod 501 and a cone 504. A through hole 401 is opened on the turntable 40. The rod 501 passes through the turntable 40 from the through hole 401. The cone 504 is fixedly arranged on one end of the rod 501 facing the storage box 20.

[0019] The turntable 40 is driven to rotate by the second motor 80, thereby driving the rods 501 corresponding to the conical coal grinding assemblies 50 to rotate. When the rods 501 rotate, the cones 504 at one end thereof can be driven to rotate. During the rotation of the cones 504, the coal extending from the opening of the storage box 20 can be ground and crushed.

[0020] See also Figure 1 , Figure 3 as well as Figure 5In one embodiment, the driving assembly 60 includes an abutment plate 601, which is fixedly mounted on the inner wall of the collecting box 10, and the abutment plate 601 is arranged on the side of the turntable 40 away from the storage box 20. The abutment plate 601 is provided with a groove 602 on the side facing the turntable 40. The second motor 80 is fixedly mounted on the side wall of the abutment plate 601, and the output shaft of the second motor 80 passes through the abutment plate 601 and is connected to the turntable 40. The scraper 70 is arranged opposite to the groove 602. An annular stopper 503 is also fixedly arranged on the outside of the end of the rod 501 away from the cone 504, and the annular stopper 503 is also connected to the turntable 40 through a second elastic member 502. The second elastic member 502 is used to provide elastic support to the rod 501, so that the end of the rod 501 away from the cone 504 abuts against the side wall of the abutment plate 601.

[0021] The turntable 40 is driven to rotate by the second motor 80, thereby driving the plurality of rods 501 and the plurality of cones 504 to rotate synchronously. When the plurality of cones 504 rotate, the second elastic member 502 is used to support the rods 501, so that the end of the rods 501 away from the cones 504 abuts against the side wall of the abutment plate 601 and slides along the side wall of the abutment plate 601. When the plurality of cones 504 on a certain area of ​​the turntable 40 act on the coal extending through the opening of the storage box 20, the abutment of the abutment plate 601 on the rods 501 can stably abut against the side wall of the abutment plate 601. The coal is ground and crushed. When the plurality of rods 501 and the plurality of cones 504 on the area of ​​the turntable 40 are rotated away from the opening of the storage box 20, the plurality of rods 501 on the area can be rotated to the groove 602 on one side of the abutment plate 601. At this time, the elastic support of the second elastic member 502 on the rod 501 can make the rod 501 move relative to the turntable 40. When the rod 501 moves, the end of the rod 501 away from the cone 504 extends into the groove 602. At the same time, the rod 501 pulls the cone 504 so that the cone 504 is retracted into the corresponding through hole 401 (such as Figure 4 As shown in the figure, the cone 504 no longer protrudes from the side of the turntable 40 toward the storage box 20. Thereafter, as the turntable 40 continues to rotate, the scraper 70 can smoothly scrape off the coal slag attached to the surface of the turntable 40, thereby realizing automatic online cleaning of the coal slag. After the coal slag on the surface of the turntable 40 is cleaned, the end of the rod 501 away from the cone 504 can slide out from the inside of the groove 602 and abut against the side wall of the abutment plate 601 again. At this time, the second elastic member 502 is compressed by force, thereby driving the rod 501 to move in the opposite direction of the turntable 40, thereby driving the corresponding cone 504 to extend from the inside of the corresponding through hole 401, so as to continue to grind and crush the coal that subsequently extends through the opening of the storage box 20.

[0022] See also Figure 3as well as Figure 5 In one embodiment, the edge of the groove 602 is in an arc-shaped structure, and the end of the rod 501 away from the cone 504 is in a hemispherical structure. When the end of the rod 501 away from the cone 504 slides from the inside of the groove 602 to the edge of the groove 602, through the arc structure at the edge of the groove 602 and the hemispherical structure at the end of the rod 501, the end of the rod 501 away from the cone 504 can smoothly slide from the inside of the groove 602 to the side wall of the abutment disk 601, so that the rod 501 can smoothly move in the opposite direction of the turntable 40, and then smoothly push the cone 504 received into the through hole 401 out again.

[0023] See also Figure 1 In one embodiment, the pushing assembly 30 includes a first elastic member 304 and a pushing plate 305. The pushing plate 305 is movably arranged inside the storage box 20. One end of the first elastic member 304 is connected to the inner wall of the storage box 20, and the other end is connected to the pushing plate 305, so as to provide elastic support for the pushing plate 305.

[0024] When the coal to be ground is placed in the storage box 20, the first elastic member 304 can elastically support the push plate 305, so that the push plate 305 is close to the coal and applies a thrust toward the opening to the coal, so that the coal is close to the side wall of the turntable 40, and as the cone 504 continues to grind the coal, the coal can be gradually reduced, and the first elastic member 304 can push the push plate 305 so that the push plate 305 gradually moves along the inside of the storage box 20 toward the opening, so as to ensure that the subsequent coal can always be close to the side wall of the turntable 40, thereby achieving efficient grinding and crushing of the coal.

[0025] See also Figure 1 In one embodiment, the pushing assembly 30 also includes a first motor 301, a reel 302 and a pull rope 303. The first motor 301 is fixedly mounted on the outer wall of the storage box 20, the reel 302 is arranged at the output end of the first motor 301, one end of the pull rope 303 is wound around the outside of the reel 302, and the other end extends to the inside of the storage box 20 and is connected to the push plate 305.

[0026] When the coal inside the storage box 20 is ground and crushed, the first motor 301 can be used to drive the reel 302 to rotate, thereby reeling the pull rope 303. During the reeling process of the pull rope 303, the push plate 305 can be pulled, so that the push plate 305 overcomes the elastic supporting force of the first elastic member 304 and then moves in the opposite direction along the storage box 20, so that the push plate 305 is away from the opening and reset. After the push plate 305 is reset, the staff can continue to place the subsequent coal to be ground inside the storage box 20, and then drive the reel 302 to rotate in the opposite direction through the first motor 301 to unwind the pull rope 303. When the pull rope 303 is unwound, the first elastic member 304 can continue to apply thrust to the coal through the push plate 305, so that the coal continues to be close to the side wall of the turntable 40.

[0027] In one embodiment, the first elastic member 304 and the second elastic member 502 may be springs or metal springs, which are not limited herein.

[0028] See also Figure 1 as well as Figure 2 In one embodiment, the side wall of the storage box 20 is fixedly connected to the collection box 10 via a plurality of support rods 201 .

[0029] In the embodiment of the present invention, when the coal needs to be ground and pulverized, the coal to be ground can be placed inside the storage box 20, and then the pushing assembly 30 is used to apply a thrust toward the opening direction to the coal inside the storage box 20, so that the coal extends out from the opening of the storage box 20 and is tightly attached to the turntable 40, and then the second motor 80 is used to drive the turntable 40 to rotate, thereby driving the plurality of conical coal grinding assemblies 50 to rotate. When the plurality of conical coal grinding assemblies 50 rotate, the coal can be ground and pulverized through friction and shearing with the coal, and the pulverized coal falls into the collection box 10 for storage; when the conical coal grinding assemblies 50 in a certain area of ​​the turntable 40 grind the coal, as the turntable 40 continues to rotate, the conical coal grinding assemblies 50 in this area are turned away from the open end of the storage box 20, and at this time, the driving assembly 80 is used to drive the turntable 40 to rotate. Component 60 drives the conical coal grinding assembly 50 on the area to move relative to the turntable 40, so that one end of the conical coal grinding assembly 50 no longer protrudes from the surface of the turntable 40, thereby keeping the surface of the turntable 40 flat; then, through the relative movement of the turntable 40 and the scraper 70 when the turntable 40 rotates, the scraper 70 can scrape the flat surface of one side of the turntable 40 to scrape off the coal slag remaining on the surface of the turntable 40, thereby preventing excessive coal slag attached to one side of the turntable 40 from affecting the subsequent coal grinding and crushing effect. Compared with the prior art, when the turntable 40 drives a plurality of conical coal grinding assemblies 50 to rotate to grind and crush the coal, the coal slag stuck between the plurality of conical coal grinding assemblies 50 on one side of the turntable 40 can be automatically cleaned online, which has the advantages of good coal slag cleaning effect and high coal grinding and crushing efficiency.

[0030] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A thermal power coal grinding mechanism for a power plant, characterized in that: It includes a collecting box, a storage box, a pushing assembly, a rotating disk, a conical coal grinding assembly, a driving assembly, a scraper and a second motor. The storage box is installed above the collecting box and is used to store the coal to be ground. One end of the storage box is open. The turntable is arranged at an open end of the storage box. The pushing assembly is arranged inside the storage box, and is used to apply a thrust toward the opening to the coal to be ground inside the storage box, so that the coal to be ground is closely attached to the turntable. The conical coal grinding components are provided in a plurality of groups, and the plurality of conical coal grinding components penetrate the turntable and cooperate with the turntable in an active manner. The second motor is arranged on the side of the turntable, and is used to drive the turntable to rotate. When the turntable rotates, it drives the plurality of conical coal grinding assemblies to rotate, so as to grind the coal to be ground. The driving assembly is arranged on one side of the turntable. When the conical coal grinding assembly in a certain area of ​​the turntable is rotated away from the open position of the storage box, the driving assembly is used to drive the conical coal grinding assembly in the area to move relative to the turntable, so that the surface of the turntable facing the storage box remains flat. One end of the scraper is fixedly connected to the collection box, and the other end is attached to a surface of the rotating disk facing the storage box.

2. A thermal power coal grinding mechanism for a power plant according to claim 1, characterized in that: The conical coal grinding assembly comprises a rod and a cone. The turntable is provided with a through hole, the rod passes through the turntable from the through hole, and the cone is fixedly arranged at one end of the rod facing the storage box.

3. A thermal power coal grinding mechanism for a power plant according to claim 2, characterized in that: The drive assembly includes an abutment plate, The abutment plate is fixedly mounted on the inner wall of the collection box, the abutment plate is arranged on a side of the turntable away from the storage box, a groove is provided on a side of the abutment plate facing the turntable, the second motor is fixedly mounted on the side wall of the abutment plate, and an output shaft of the second motor passes through the abutment plate and is connected to the turntable. The scraper is arranged opposite to the groove, An annular stopper is fixedly provided on the outside of one end of the rod away from the cone, and the annular stopper is connected to the turntable via a second elastic member, which is used to provide elastic support for the rod so that the end of the rod away from the cone abuts against the side wall of the abutment plate.

4. A thermal power coal grinding mechanism for a power plant according to claim 3, characterized in that: The edge of the groove is in an arc-shaped structure, and the end of the rod away from the cone is in a hemispherical structure.

5. The thermal power coal grinding mechanism of a power plant according to claim 1, characterized in that: The pusher assembly includes a first elastic member and a push plate. The push plate is movably arranged inside the storage box. One end of the first elastic member is connected to the inner wall of the storage box, and the other end is connected to the push plate, so as to provide elastic support for the push plate.

6. A thermal power coal grinding mechanism for a power plant according to claim 5, characterized in that: The pusher assembly also includes a first motor, a reel and a pull rope. The first motor is fixedly mounted on the outer wall of the storage box, the reel is arranged at the output end of the first motor, one end of the pull rope is wound around the outside of the reel, and the other end extends into the storage box and is connected to the push plate.

7. The thermal power coal grinding mechanism of a power plant according to claim 1, characterized in that: The side wall of the storage box is fixedly connected to the collection box through a plurality of support rods.

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