Crushing and screening device for coal as fired

Abstract

The embodiment of the utility model provides a coal as fired crushing and screening device, and relates to the technical field of boiler feeding equipment. The as-fired coal crushing and screening device comprises a spiral feeder, a crusher is installed at a discharging port of the spiral feeder, a dustproof box is installed on the surface of the crusher and used in cooperation with the crusher, a crushing assembly is arranged in an inner cavity of the dustproof box, a dust suction assembly is arranged on the front side of the dustproof box, and a dust collection assembly is arranged on the outer side of the dust collection assembly. And the dust collection assembly comprises a dust storage box, through cooperative use of the crushing assembly, the dust collection assembly and the separation assembly, the effects of adsorbing dust when coal is poured in and separating and crushing the coal and impurities in advance are achieved, the impurities are prevented from entering the crushing and screening device, and the crushing and screening efficiency is improved. And the workload of the crushing and screening device is increased, the blocking condition is avoided, the working burden of the crushing and screening device is relieved, and the working efficiency of the crushing and screening device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler feeding equipment, in particular to a furnace feeding coal crushing and screening device. Background Art

[0002] The coal crushing and screening device is used in thermal power plants, metallurgy, chemical industry and other industries. It is generally called a coal crusher. The main purpose of this device is to reduce the size of coal blocks to make them more uniform, so as to improve the combustion efficiency of coal and ensure that the particle size of coal meets the requirements of boiler combustion equipment.

[0003] However, when coal is poured into the existing crushing and screening device, the coal will fall and collide with the device, causing it to emit a large amount of dust. This dust not only affects the quality of the air in the surrounding environment, but also requires users to wear protective devices such as masks when working around it, which is time-consuming and laborious. As a result, the user needs to reduce the surrounding environment manually or with the help of external dust reduction tools, which increases the user's workload. Therefore, we propose a coal crushing and screening device for furnace inlet, which has easy-to-use functions and is in urgent need of development. Utility Model Content

[0004] The utility model aims to provide a coal crushing and screening device for furnace inlet, which can avoid the problem that when coal is poured into the existing crushing and screening device, the coal falls and collides with the device, causing a large amount of dust to be emitted. The dust not only affects the quality of the air in the surrounding environment, but also requires the user to wear protective devices such as masks when working in the surrounding environment, which is time-consuming and laborious, thereby requiring the user to reduce the surrounding environment manually or with the help of external dust reduction tools, thereby increasing the user's workload.

[0005] The utility model provides a coal crushing and screening device for entering a furnace, comprising a spiral feeder, a crusher is installed at the discharge port of the spiral feeder, a dustproof box is installed on the surface of the crusher, a feed pipe is connected to one side of the dustproof box, the feed pipe is communicated with the feed port of the crusher, a crushing component is arranged in the inner cavity of the dustproof box, a dust suction component is arranged on the front side of the dustproof box, the dust suction component includes a dust storage box, a plurality of symmetrically arranged filter components are slidably connected to the inner cavity of the dustproof box, and a separation component is arranged in the inner cavity of the dustproof box.

[0006] In a specific embodiment, the crushing assembly includes a first motor, the bottom of which is connected to a dustproof box via a welding frame, the inner cavity of the dustproof box is rotatably connected to two matching crushing rollers, and the bottom of the inner cavity of the dustproof box is connected to an inclined plate.

[0007] In a specific implementation, the rear end of the pulverizing roller passes through the outside of the dustproof box, the surfaces of the two pulverizing rollers are respectively sleeved with two first pulleys, and the output shaft of the first motor is connected to the first pulleys.

[0008] In a specific embodiment, the dust collection assembly includes a fan installed with a dustproof box, the front side of the dustproof box is provided with a through cavity adapted to the air suction port of the fan, and the inner cavity of the through cavity is connected with a filter screen, the air outlet of the fan is connected with an air duct, the end of the air duct away from the fan passes through the inner cavity of the dust storage box, and the bottom of the dust storage box is connected with a plurality of air outlet ducts.

[0009] In a specific embodiment, the separation component is used in conjunction with a crushing component and a dust suction component, and the separation component includes an installation box, the outer surface of the installation box is connected to the dustproof box, the right side of the installation box is connected to a fixed box, the right side of the inner cavity of the fixed box is bolted to a second motor, and the output shaft of the second motor is connected to a rotating rod.

[0010] In a specific embodiment, the front side of the fixed box is connected to a positioning box, the inner cavity of the positioning box is rotatably connected to a long rod, the surface of the long rod and the surface of the rotating rod are respectively connected to two meshing first bevel gears, and both sides of the inner cavity of the installation box are rotatably connected to threaded rods.

[0011] In a specific embodiment, the surface of the threaded rod is threadedly connected to a threaded plate, the outer surface of the threaded plate is slidably connected to the installation box, one side of the threaded plate penetrates into the inner cavity of the dustproof box and is connected to a filter screen plate, the surfaces of the three threaded rods and the surface of the rotating rod are respectively connected to three meshing second bevel gears, the inner cavity of the installation box is rotatably connected to a plurality of brush cylinders, and the brush cylinders are in contact with the filter screen plate, and the inner cavity of the positioning box is rotatably connected to a short rod.

[0012] In a specific embodiment, the inner cavity of the positioning box is rotatably connected to a guide rod, the rear end of the guide rod penetrates into the inner cavity of the dust storage box, and the left end of the guide rod is rotatably connected to the dust storage box, and the surface of the short rod and the surface of the long rod are respectively provided with two second pulleys.

[0013] In a specific embodiment, the two second pulleys are connected by belt transmission, the surface of the short rod and the surface of the guide rod are sleeved with a third pulley, and the two third pulleys are connected by belt transmission.

[0014] In a specific embodiment, the surface of the guide rod is connected to two convex plates that contact the filter component, both sides of the inner cavity of the dust storage box are connected to mounting plates, one side of the mounting plate is connected to a spring, and one end of the spring is connected to the filter component.

[0015] The beneficial effects of the present application are as follows: through the coordinated use of the crushing component, the dust suction component and the separation component, the dust is adsorbed when the coal is poured, and the coal and impurities are separated and crushed in advance, thereby preventing these impurities from entering the crushing and screening device, increasing the workload and blockage of the crushing and screening device, reducing the workload of the crushing and screening device, and improving the working efficiency of the crushing and screening device. Under long-term operation, the filter screen plate in the separation component is also self-cleaned separately, thereby increasing the service life of the filter screen plate, preventing the filter screen plate from being blocked during filtering, which is beneficial to the operation and use of the crushing and screening device and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a three-dimensional schematic diagram of the overall structure of an embodiment of the utility model;

[0018] Figure 2 A three-dimensional diagram of the dustproof box structure of the present utility model embodiment Figure 1 ;

[0019] Figure 3 It is a three-dimensional schematic diagram of the side cross-sectional structure of the dustproof box of an embodiment of the utility model;

[0020] Figure 4 For the utility model embodiment Figure 3 A is an enlarged schematic diagram of the structure at center A;

[0021] Figure 5 It is a three-dimensional schematic diagram of the threaded rod structure of an embodiment of the utility model;

[0022] Figure 6 It is a three-dimensional schematic diagram of the structure of the second bevel gear member in an embodiment of the utility model;

[0023] Figure 7 It is a three-dimensional schematic diagram of the convex plate structure of an embodiment of the utility model;

[0024] Figure 8 A three-dimensional diagram of the dustproof box structure of the present utility model embodiment Figure 2 ;

[0025] Fig. 9 It is a three-dimensional schematic diagram of the side cross-sectional structure of the dustproof box of an embodiment of the utility model;

[0026] Fig.10 It is a schematic diagram of the side structure of the filter screen plate of an embodiment of the utility model.

[0027] Icons: 1. Screw feeder; 2. Crusher; 3. Dustproof box; 31. Feed pipe; 32. Inclined plate; 4. Crushing assembly; 41. First motor; 42. Crushing roller; 43. First pulley; 5. Dust suction assembly; 51. Fan; 52. Dust storage box; 53. Filter component; 54. Exhaust pipe; 6. Separation assembly; 61. Installation box; 62. Filter screen; 63. Fixing box; 64. Second motor; 65. Rotating rod; 66. Positioning box; 67. First bevel gear; 68. Threaded rod; 69. Threaded plate; 610. Second bevel gear; 611. Brush cylinder; 612. Second pulley; 613. Guide rod; 614. Third pulley; 615. Convex plate; 616. Installation plate; 617. Spring; 618. Long rod; 619. Short rod. DETAILED DESCRIPTION

[0028] When coal is poured into the existing crushing and screening device, the coal will fall and collide with the device, causing it to emit a large amount of dust. This dust not only affects the quality of the air in the surrounding environment, but also requires the user to wear protective devices such as masks when working around, which is time-consuming and laborious, resulting in the need for the user to manually or with the help of external dust reduction tools to reduce the surrounding environment, increasing the user's workload. Therefore, the inventor has provided a furnace coal crushing and screening device after research. Through the coordinated use of a crushing component, a dust suction component and a separation component, it plays a role in adsorbing dust when coal is poured, and separating and crushing coal and impurities in advance, avoiding these impurities from entering the crushing and screening device, and increasing the workload and blockage of the crushing and screening device, reducing the workload of the crushing and screening device, and improving the work efficiency of the crushing and screening device. In addition, under long-term work, the filter screen in the separation component is also self-cleaned separately, thereby increasing the service life of the filter screen, so that the filter screen avoids clogging during filtering, which is beneficial to the work and use of the crushing and screening device and is easy to use, thereby solving the above-mentioned defects.

[0029] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0030] Please refer to Figures 1 to 10The embodiment of the utility model provides a coal crushing and screening device for feeding into a furnace, comprising a screw feeder 1, a crusher 2 is installed at the discharge port of the screw feeder 1, a dustproof box 3 is installed on the surface of the crusher 2, wherein the top of the dustproof box 3 is provided with an open cavity for convenient feeding, and a feeding pipe 31 is connected to one side of the dustproof box 3, and the feeding pipe 31 is connected to the feeding port of the crusher 2;

[0031] Please refer to Figures 2 to 10 The inner cavity of the dustproof box 3 is provided with a crushing assembly 4, and the crushing assembly 4 includes a first motor 41. The bottom of the first motor 41 is connected to the dustproof box 3 through a welding frame. The inner cavity of the dustproof box 3 is rotatably connected to two matching crushing rollers 42. The rear end of the crushing roller 42 penetrates to the outside of the dustproof box 3, and the area where the crushing roller 42 and the dustproof box 3 penetrate is sealed. The surfaces of the two crushing rollers 42 are respectively sleeved with two first pulleys 43, and the two first pulleys 43 are connected through belt transmission. The output shaft of the first motor 41 is connected to the first pulley 43. The bottom of the inner cavity of the dustproof box 3 is connected to an inclined plate 32, wherein the inclined plate 32 is used in conjunction with the feed pipe;

[0032] Specifically, the user first pours the external coal into the dustproof box 3, and starts the first motor 41. The output shaft of the first motor 41 drives the crushing roller 42 to rotate, and drives another crushing roller 42 to rotate through the first pulley 43, so that the large coal lumps can be crushed in advance by rotating the two crushing rollers 42, thereby completing the crushing of coal and impurities together;

[0033] Please refer to Figures 2 to 9 , a dust suction assembly 5 is arranged on the front side of the dustproof box 3, the dust suction assembly 5 includes a dust storage box 52, and a door panel is bolted to the left side of the dust storage box 52, a plurality of symmetrically arranged filter components 53 are slidably connected to the inner cavity of the dust storage box 52, wherein the filter component 53 is composed of a filter screen and an activated carbon plate, the dust suction assembly 5 includes a fan 51 installed with the dustproof box 3, a through cavity adapted to the air suction port of the fan 51 is opened on the front side of the dustproof box 3, and a filter screen is connected to the inner cavity of the through cavity, an air duct is connected to the air outlet of the fan 51, and one end of the air duct away from the fan 51 penetrates into the inner cavity of the dust storage box 52, and a protective plate is bolted to the front side of the dust storage box 52, so that the user can disassemble the protective plate and check the filter component 53 in the dust storage box 52, and a plurality of air outlet pipes 54 are connected to the bottom of the dust storage box 52;

[0034] When the crushing component 4 is crushing, the fan 51 can be started, and the fan 51 absorbs the dust when pouring the material in the dust box 3 through the penetrating cavity, so as to reduce the dust when pouring the material. The fan 51 gradually discharges the dust into the dust storage box 52 through the air duct, and the dust particles are adsorbed and filtered by the filter component 53, and finally discharged from the outside of the dust storage box 52 through the air outlet duct 54. In addition, under long-term filtering, the separation component 6 can be started to vibrate the filter component 53 to remove the particles in the pores of the filter component 53. After the particles are removed, the user can manually remove these particles to the outside of the dust storage box 52 with the help of external tools and the vacuum cleaner component installed in advance;

[0035] Please refer to Figures 3 to 9 The inner cavity of the dustproof box 3 is provided with a separation component 6, which is used in conjunction with the crushing component 4 and the dust suction component 5. The separation component 6 includes an installation box 61, wherein the top of the installation box 61 is hinged with a box door, which is convenient for taking out the materials inside the installation box 61 or performing deep cleaning and replacement. The outer surface of the installation box 61 is connected to the dustproof box 3, and the right side of the installation box 61 is connected to a fixed box 63, and the right side of the inner cavity of the fixed box 63 is bolted to a second motor 64, and the output shaft of the second motor 64 is connected to a rotating rod 65. The front side of the fixed box 63 is connected to a positioning box 66, and the inner cavity of the positioning box 66 is rotatably connected to a long rod 618, and the surface of the long rod 618 and the surface of the rotating rod 65 are respectively connected to two meshing first bevel gears 67;

[0036] Please refer to Figures 3 to 10 , threaded rods 68 are rotatably connected to both sides of the inner cavity of the installation box 61, wherein the surfaces of the two threaded rods 68 are provided with a plurality of threads, and the threads are opposite, and the shape of the installation box 61 is U-shaped, and the surface of the threaded rods 68 is threadedly connected to a threaded plate 69, wherein the area where the threaded plate 69 and the threaded rods 68 are in contact is provided with matching internal threads, and the outer surface of the threaded plate 69 is slidably connected to the installation box 61, and one side of the threaded plate 69 penetrates into the inner cavity of the dustproof box 3 and is connected to a filter screen plate 62, wherein both sides of the dustproof box 3 are provided with a through cavity that is compatible with the threaded plate 69, and the area in contact with the through cavity is sealed, and as shown Fig.10As shown, a lining plate is connected to the inner cavity of the dustproof box 3, and the top of the lining plate is in contact with the filter screen plate 62. The surfaces of the three threaded rods 68 and the surface of the rotating rod 65 are respectively connected with three meshing second bevel gears 610. The inner cavity of the mounting box 61 is rotatably connected with a plurality of brush cylinders 611, and the brush cylinders 611 are in contact with the filter screen plate 62. The surface of the dustproof box 3 is connected with a discharge pipe, which penetrates into the inner cavity of the dustproof box 3 and is located above the filter screen plate 62, so as to remove impurities remaining on the filter screen plate 62. The outer suction device is preferably an impurity pump, and the inner cavity of the positioning box 66 is rotatably connected with a short rod 619, and the inner cavity of the positioning box 66 is rotatably connected with a guide rod 613, and the rear end of the guide rod 613 penetrates into the inner cavity of the dust storage box 52, and the left end of the guide rod 613 is rotatably connected with the dust storage box 52, and the surface of the short rod 619 and the surface of the long rod 618 are respectively provided with two second pulleys 612, and the two second pulleys 612 are connected by belt transmission;

[0037] Please refer to Figures 2 to 10 The surface of the short rod 619 and the surface of the guide rod 613 are sleeved with a third pulley 614, and the two third pulleys 614 are connected by belt transmission. The surface of the guide rod 613 is connected to two convex plates 615 in contact with the filter component 53. Both sides of the inner cavity of the dust storage box 52 are connected to mounting plates 616, one side of the mounting plate 616 is connected to a spring 617, and one end of the spring 617 is connected to the filter component 53;

[0038] Specifically, when the crushed coal passes through the filter plate 62 to separate impurities and usable coal, the usable coal flows into the crusher 2 through the inclined plate 32 for crushing. After crushing, it is transported to the boiler through the screw feeder 1 for full combustion. When the filter plate 62 is used for too long, the second motor 64 can be started, the second motor 64 drives the rotating rod 65 to rotate, the rotating rod 65 drives the first bevel gear 67 to engage and rotate, the first bevel gear 67 drives the long rod 618 to rotate, at this time the rotating rod 65 drives the three second bevel gears 610 to engage and rotate, the second bevel gear 610 drives the threaded rod 68 to rotate, the threaded rod 68 uses the principle of thread transmission to push the two threaded plates 69 to move in opposite directions, and the two threaded plates 69 push the filter plate 62 to move in opposite directions. The filter screen plate 62 moves step by step, and moves into the installation box 61. During the movement, it contacts with the brush cylinder 611 and pushes the brush cylinder 611 to contact, so that the brush cylinder 611 cleans the surface of the filter screen plate 62. At this time, the long rod 618 drives the second pulley 612 to rotate, the second pulley 612 drives the short rod 619 to rotate, the short rod 619 drives the third pulley 614 to rotate, the third pulley 614 drives the guide rod 613 to rotate, the guide rod 613 drives the convex plate 615 to rotate, and conflicts with the filter component 53 during rotation. The filter component 53 uses the spring 617 to move up and down to achieve the purpose of vibration, and shakes the particles on the filter component 53 to avoid blockage, which is convenient for use.

[0039] In summary, the working principle of a coal crushing and screening device for furnace entry according to an embodiment of the utility model is as follows: when the user pours external coal into the dustproof box 3, the crushing component 4 can be started to crush the large pieces of coal that are clumped into small particles, and the dust suction component 5 can be started at the same time to suck the dust during pouring into the dust suction component 5 for filtering and discharge. When the coal is crushed, the separation component 6 can be started, and the separation component 6 separates the coal. The separated coal is discharged into the crusher 2 through the inclined plate 32 and the feed pipe 31 for crushing. After crushing, the screw feeder 1 transports the coal into the boiler for full combustion, which is convenient for use.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A coal crushing and screening device for feeding into a furnace, comprising a screw feeder (1), characterized in that: The discharge port of the screw feeder (1) is equipped with a crusher (2), the surface of the crusher (2) is equipped with a dustproof box (3), one side of the dustproof box (3) is connected with a feed pipe (31), the feed pipe (31) is communicated with the feed port of the crusher (2), the inner cavity of the dustproof box (3) is equipped with a crushing component (4), the front side of the dustproof box (3) is equipped with a dust suction component (5), the dust suction component (5) includes a dust storage box (52), the inner cavity of the dust storage box (52) is slidably connected with a plurality of symmetrically arranged filter components (53), and the inner cavity of the dustproof box (3) is equipped with a separation component (6).

2. The coal crushing and screening device according to claim 1, characterized in that: The crushing assembly (4) comprises a first motor (41), the bottom of which is connected to a dustproof box (3) via a welding frame, the inner cavity of the dustproof box (3) is rotatably connected to two matching crushing rollers (42), and the bottom of the inner cavity of the dustproof box (3) is connected to an inclined plate (32).

3. The coal crushing and screening device according to claim 2, characterized in that: The rear end of the crushing roller (42) penetrates to the outside of the dustproof box (3), and the surfaces of the two crushing rollers (42) are respectively sleeved with two first pulleys (43), and the output shaft of the first motor (41) is connected to the first pulleys (43).

4. The coal crushing and screening device according to claim 1, characterized in that: The dust collection assembly (5) comprises a fan (51) installed with a dustproof box (3); a through cavity adapted to the air suction port of the fan (51) is provided on the front side of the dustproof box (3); a filter screen is connected to the inner cavity of the through cavity; an air outlet of the fan (51) is connected to an air duct; an end of the air duct away from the fan (51) passes through the inner cavity of the dust storage box (52); and a plurality of air outlet ducts (54) are connected to the bottom of the dust storage box (52).

5. The coal crushing and screening device according to claim 1, characterized in that: The separation component (6) is used in conjunction with the crushing component (4) and the dust suction component (5), and the separation component (6) comprises a mounting box (61), the outer surface of the mounting box (61) is connected to the dustproof box (3), the right side of the mounting box (61) is connected to a fixing box (63), the right side of the inner cavity of the fixing box (63) is bolted to a second motor (64), and the output shaft of the second motor (64) is connected to a rotating rod (65).

6. The coal crushing and screening device for furnace entry according to claim 5, characterized in that: The front side of the fixed box (63) is connected to a positioning box (66), the inner cavity of the positioning box (66) is rotatably connected to a long rod (618), the surface of the long rod (618) and the surface of the rotating rod (65) are respectively connected to two meshing first bevel gears (67), and both sides of the inner cavity of the installation box (61) are rotatably connected to threaded rods (68).

7. The coal crushing and screening device according to claim 6, characterized in that: The surface of the threaded rod (68) is threadedly connected to a threaded plate (69), the outer surface of the threaded plate (69) is slidably connected to the installation box (61), one side of the threaded plate (69) penetrates into the inner cavity of the dustproof box (3) and is connected to a filter screen (62), the surfaces of the three threaded rods (68) and the surface of the rotating rod (65) are respectively connected to three meshing second bevel gears (610), the inner cavity of the installation box (61) is rotatably connected to a plurality of brush cylinders (611), and the brush cylinders (611) are in contact with the filter screen (62), and the inner cavity of the positioning box (66) is rotatably connected to a short rod (619).

8. The coal crushing and screening device for furnace entry according to claim 7, characterized in that: The inner cavity of the positioning box (66) is rotatably connected to a guide rod (613), the rear end of the guide rod (613) penetrates into the inner cavity of the dust storage box (52), and the left end of the guide rod (613) is rotatably connected to the dust storage box (52), and the surface of the short rod (619) and the surface of the long rod (618) are respectively sleeved with two second pulleys (612).

9. The coal crushing and screening device for furnace entry according to claim 8, characterized in that: The two second pulleys (612) are connected by belt transmission, the surface of the short rod (619) and the surface of the guide rod (613) are sleeved with a third pulley (614), and the two third pulleys (614) are connected by belt transmission.

10. The coal crushing and screening device for furnace entry according to claim 9, characterized in that: The surface of the guide rod (613) is connected to two convex plates (615) that are in contact with the filter component (53), and both sides of the inner cavity of the dust storage box (52) are connected to mounting plates (616), one side of the mounting plate (616) is connected to a spring (617), and one end of the spring (617) is connected to the filter component (53).

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