Coal grinding device for gasification furnace

Abstract

The utility model is applicable to the technical field of coal processing, and provides a coal grinding device for a gasification furnace, which comprises a grinding box used for grinding coal; the grinding cavity is formed in the grinding box; the grinding block is rotationally mounted in the grinding box, the grinding block is matched with the grinding cavity, and the grinding block is used for grinding coal; the motor is fixedly mounted on the outer wall of one side of the grinding box; the mounting shaft is rotationally mounted on the grinding box, and one end of the mounting shaft is fixedly connected with an output shaft of the motor. According to the coal grinding device for the gasification furnace, uniform discharging can be carried out in the coal grinding process, the situation of shutdown caused by coal accumulation is avoided, and the coal grinding efficiency is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal processing, and particularly relates to a coal powder grinding device for a gasifier. Background Technique

[0002] A gasifier is a heating device that converts solid or liquid fuel into combustible gas and then mixes the gas with air for combustion to achieve the purpose of heating. It has the advantages of environmental protection, energy conservation, cleanliness, etc. When making gas with a gasifier, coal is needed. In order to better utilize coal, coal powder grinding treatment is required, so a corresponding coal powder grinding device for a gasifier needs to be used.

[0003] However, some existing coal powder grinding devices for gasifiers still have certain deficiencies in the actual use process. During the coal feeding process, the coal cannot be evenly fed. When the material accumulates too much, there will be a situation of material blockage and shutdown, which affects the coal grinding efficiency. After retrieval, the patent document with the authorization announcement number: CN110882817B discloses a coal powder grinding device for a gasifier, which also has the same problem during its use. Content of the Utility Model

[0004] The utility model provides a coal powder grinding device for a gasifier, aiming to solve the problem of uneven feeding of the existing coal powder grinding device for a gasifier.

[0005] The utility model is realized as follows. A coal powder grinding device for a gasifier includes: a grinding box for grinding coal; a grinding cavity opened in the grinding box; a grinding block rotatably installed in the grinding box, the grinding block being adapted to the grinding cavity and used for grinding coal; a motor fixedly installed on the outer wall of one side of the grinding box; a mounting shaft rotatably installed on the grinding box, one end of the mounting shaft being fixedly connected to the output shaft of the motor; two bevel gears respectively fixedly sleeved on the output shafts of the mounting shaft and the grinding block, and the two bevel gears meshing with each other; a feeding wire frame arranged in the grinding box for feeding coal; a mounting mechanism assembled on the grinding box and the feeding wire frame for mounting the feeding wire frame; a feeding mechanism assembled on the grinding box for driving the feeding wire frame to vibrate for feeding.

[0006] Preferably, the mounting mechanism includes: a mounting rod fixedly installed on the inner wall of the grinding box; a spring sleeved on the mounting rod; a mounting plate fixedly installed on the feeding wire frame, and the mounting plate is slidably connected to the mounting rod.

[0007] Preferably, the blanking mechanism includes: a placement shaft rotatably installed on the grinding box; a convex block fixedly sleeved on the placement shaft; a connecting plate fixedly installed on the outer wall of the blanking wire frame, the connecting plate is located on one side of the convex block, and the convex block and the connecting plate are adapted to each other; two first belt pulleys fixedly sleeved on the installation shaft and the placement shaft, and a first belt is sleeved on the two first belt pulleys.

[0008] Preferably, a crushing box is fixedly installed on the grinding box. Two crushing rollers are rotatably installed in the crushing box. The crushing rollers are used for crushing coal. A crushing mechanism is arranged on the grinding box. The crushing mechanism is used to drive the two crushing rollers to rotate relative to each other to crush coal.

[0009] Preferably, the crushing mechanism includes: two circular gears fixedly sleeved on the two crushing rollers, and the two circular gears are meshed with each other; two second belt pulleys fixedly sleeved on one of the crushing rollers and the installation shaft, and a second belt is sleeved on the two second belt pulleys.

[0010] Preferably, a collection mechanism is arranged on the grinding box. The collection mechanism is used for collecting coal powder generated during the coal crushing process. The collection mechanism includes: a collection box assembled on one side of the grinding box. A collection filter bag is arranged on the collection box. The collection filter bag is used for collecting coal powder; a blower fixedly installed in the collection box, and the air outlet end of the blower extends to the outside of the collection box; a collection pipe fixedly installed on the collection box, and the collection pipe is communicated with the crushing box.

[0011] Preferably, the blanking wire frame includes a blanking net plate. The blanking net plate is hinged to the bottom of the blanking wire frame. A hook is fixedly installed on the blanking net plate. A buckle is fixedly installed on the blanking wire frame. The buckle and the hook are adapted to be connected.

[0012] Preferably, a sealing door is arranged on the grinding box. The sealing door is located on one side of the blanking wire frame. A blanking pipe is arranged at the bottom of the grinding box. The blanking pipe is used for blanking the ground coal powder.

[0013] Compared with the related art, the coal powder grinding device for a gasifier provided by the present utility model has the following beneficial effects:

[0014] When the motor rotates, it drives the installation shaft to rotate. Under the action of the bevel gear, the grinding block can be driven to rotate. At the same time, when the installation shaft rotates, the feeding mechanism is started, which can drive the feeding wire mesh frame to vibrate, and then evenly feed the coal in the feeding wire mesh frame into the grinding cavity, avoiding excessive feeding and the situation of material accumulation and shutdown, ensuring the grinding operation efficiency of the coal. When the coal falls into the grinding cavity, it can be ground under the action of the rotating grinding block. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. 6 is a front view structural schematic diagram of a coal powder grinding device for a gasifier provided by the present invention;

[0016] Figure 2 FIG. 10 is a front view sectional structural schematic diagram of the present invention;

[0017] Figure 3 is Figure 2 an enlarged structural schematic diagram of part A shown in FIG. 16;

[0018] Figure 4 is Figure 2 an enlarged structural schematic diagram of part B shown in FIG. 22;

[0019] Figure 5 is Figure 2 an enlarged structural schematic diagram of part C shown in FIG. 28;

[0020] Figure 6 FIG. 32 is a three-dimensional structural schematic diagram of the grinding block in the present invention.

[0021] Reference numerals: 1, grinding box; 2, grinding cavity; 3, grinding block; 4, motor; 5, installation shaft; 6, bevel gear; 7, feeding wire mesh frame; 701, feeding mesh plate; 8, installation mechanism; 801, installation rod; 802, spring; 803, installation plate; 9, feeding mechanism; 901, placement shaft; 902, convex block; 903, connecting plate; 904, first pulley; 905, first belt; 10, collection box; 11, fan; 12, collection filter bag; 13, collection pipe; 14, crushing box; 15, crushing roller; 16, circular gear; 17, second pulley; 18, second belt; 19, hook; 20, buckle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "comprising" and "having" and any variations thereof in the specification, claims, and drawings of this application are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification, claims, or drawings of this application are used to distinguish different objects and not to describe a specific order.

[0023] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive of other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0024] An embodiment of the present utility model provides a coal pulverizing device for a gasifier, as Figures 1-6 shown. The coal pulverizing device for a gasifier includes: a grinding box 1 for grinding coal; a grinding chamber 2 opened in the grinding box 1; a grinding block 3 rotatably installed in the grinding box 1, the grinding block 3 being adapted to the grinding chamber 2 and used for grinding coal; a motor 4 fixedly installed on an outer wall of one side of the grinding box 1; a mounting shaft 5 rotatably installed on the grinding box 1, one end of the mounting shaft 5 being fixedly connected to an output shaft of the motor 4; two bevel gears 6 respectively fixedly sleeved on the output shafts of the mounting shaft 5 and the grinding block 3, and the two bevel gears 6 being meshed with each other; a blanking grid frame 7 arranged in the grinding box 1 for blanking coal; a mounting mechanism 8 assembled on the grinding box 1 and the blanking grid frame 7 for mounting the blanking grid frame 7; and a blanking mechanism 9 assembled on the grinding box 1 for driving the blanking grid frame 7 to vibrate for blanking.

[0025] It should be noted that in the actual use process of some existing coal pulverizing devices for gasifiers, they cannot evenly blank coal well, and it is easy to cause material blockage and shutdown due to coal accumulation;

[0026] In this embodiment, when grinding coal, the motor 4 is started through the controller. The crushed coal falls into the blanking grid frame 7. When the motor 4 rotates, it drives the installation shaft 5 to rotate. Under the action of the bevel gear 6, the grinding block 3 can be driven to rotate. At the same time, when the installation shaft 5 rotates, the blanking mechanism 9 is started, which can drive the blanking grid frame 7 to vibrate, so that the coal in the blanking grid frame 7 can be evenly discharged into the grinding cavity 2, thus avoiding excessive feeding and the situation of material accumulation and shutdown, and ensuring the grinding operation efficiency of coal. When the coal falls into the grinding cavity 2, under the action of the rotating grinding block 3, the coal can be ground.

[0027] In a further preferred embodiment of the present invention, the installation mechanism 8 includes: an installation rod 801 fixedly installed on the inner wall of the grinding box 1; a spring 802 sleeved on the installation rod 801; an installation plate 803 fixedly installed on the blanking grid frame 7, and the installation plate 803 is slidably connected to the installation rod 801.

[0028] In this embodiment, under the action of the installation mechanism 8, the blanking grid frame 7 can be installed. At the same time, when the blanking mechanism 9 vibrates the blanking grid frame 7, the installation plate 803 can move up well along the installation rod 801, so that the blanking mechanism 9 can vibrate the blanking grid frame 7 well.

[0029] In a further preferred embodiment of the present invention, the blanking mechanism includes: a placement shaft 901 rotatably installed on the grinding box 1; a convex block 902 fixedly sleeved on the placement shaft 901; a connecting plate 903 fixedly installed on the outer wall of the blanking grid frame 7, the connecting plate 903 is located on one side of the convex block 902, and the convex block 902 and the connecting plate 903 are adapted to each other; two first belt pulleys 904 fixedly sleeved on the installation shaft 5 and the placement shaft 901, and a first belt 905 is sleeved on the two first belt pulleys 904.

[0030] In this embodiment, when using the blanking mechanism 9, the blanking mechanism 9 is arranged on both sides of the grinding box 1, so that the blanking grid frame 7 can be stably vibrated and evenly discharged. When the installation shaft 5 rotates, under the interaction of the first belt pulley 904 and the first belt 905, the convex block 902 on the placement shaft 901 can be driven to rotate to squeeze the connecting plate 903 back and forth. With the cooperation of the installation mechanism 8, the blanking grid frame 7 can be driven to vibrate up and down, so that the coal in the blanking grid frame 7 can be evenly discharged into the grinding cavity 2, thus avoiding excessive feeding and the situation of material accumulation and shutdown, and ensuring the grinding operation efficiency of coal.

[0031] In a further preferred embodiment of the present utility model, a crushing box 14 is fixedly installed on the grinding box 1. Two crushing rollers 15 are rotatably installed in the crushing box 14. The crushing rollers 15 are used for crushing coal. A crushing mechanism is arranged on the grinding box 1. The crushing mechanism is used to drive the two crushing rollers 15 to rotate relative to each other to crush coal.

[0032] In this embodiment, when the installation shaft 5 rotates, the crushing mechanism will be started to drive the two crushing rollers 15 to rotate relative to each other, so as to crush coal and improve the efficiency of coal powder grinding.

[0033] In a further preferred embodiment of the present utility model, the crushing mechanism includes: two circular gears 16 fixedly sleeved on the two crushing rollers 15, and the two circular gears 16 are meshed with each other; two second belt pulleys 17 fixedly sleeved on one of the crushing rollers 15 and the installation shaft 5, and a second belt 18 is sleeved on the two second belt pulleys 17.

[0034] In this embodiment, when the installation shaft 5 rotates, under the interaction of the second belt pulley 17 and the second belt 18, one of the crushing rollers 15 can be driven to rotate. Under the action of the two circular gears 16, the two crushing rollers 15 can rotate relative to each other, so as to crush coal and improve the efficiency of coal powder grinding.

[0035] In a further preferred embodiment of the present utility model, a collection mechanism is arranged on the grinding box 1. The collection mechanism is used to collect the coal powder generated during the coal crushing process. The collection mechanism includes: a collection box 10 assembled on one side of the grinding box 1. A collection filter bag 12 is arranged on the collection box 10. The collection filter bag 12 is used to collect coal powder; a fan 11 fixedly installed in the collection box 10. The air outlet end of the fan 11 extends to the outside of the collection box 10; a collection pipe 13 fixedly installed on the collection box 10. The collection pipe 13 is communicated with the crushing box 14.

[0036] In this embodiment, when crushing coal, the fan 11 is started through the controller to form a certain negative pressure in the collection pipe 13. The coal powder generated during the coal crushing process enters the collection filter bag 12 through the collection pipe 13 and is collected, so that the coal powder generated during the coal crushing process can be collected and the utilization rate of coal can be improved.

[0037] In a further preferred embodiment of the present utility model, the blanking grid frame 7 includes a blanking mesh plate 701. The blanking mesh plate 701 is hinged to the bottom of the blanking grid frame 7. A hook 19 is fixedly installed on the blanking mesh plate 701. A buckle 20 is fixedly installed on the blanking grid frame 7. The buckle 20 is adaptively connected with the hook 19.

[0038] In this embodiment, the blanking mesh plate 701 is conveniently fixed through the buckle 20 and the hook 19, and at the same time, the blanking mesh plate 701 can be conveniently opened to process the residual coal in the blanking network frame 7.

[0039] In a further preferred embodiment of the present invention, a sealing door is provided on the grinding box 1. The sealing door is located on one side of the blanking network frame 7. A blanking pipe is provided at the bottom of the grinding box 1, and the blanking pipe is used for blanking the ground coal powder.

[0040] In this embodiment, the inside of the grinding box 1 can be conveniently cleaned through the sealing door, and the blanking pipe is used for blanking the ground coal powder.

[0041] In summary, when the motor 4 rotates, it drives the mounting shaft 5 to rotate. Under the action of the bevel gear 6, the grinding block 3 can be driven to rotate. At the same time, when the mounting shaft 5 rotates, the blanking mechanism 9 is started, so that the blanking network frame 7 can be driven to vibrate, and then the coal in the blanking network frame 7 can be evenly blanked into the grinding cavity 2, avoiding excessive blanking and the situation of material accumulation and shutdown, ensuring the grinding operation efficiency of coal. When the coal falls into the grinding cavity 2, under the action of the rotating grinding block 3, the coal can be ground.

[0042] Compared with the related technology, it is possible to uniformly blank during the coal grinding process, avoid the situation of shutdown caused by coal accumulation, and ensure the grinding operation efficiency of coal.

[0043] It should be noted that the circuits, electronic components, and modules involved in the present invention are all prior arts. Those skilled in the art can fully implement them without further elaboration. The content protected by the present invention does not involve improvements to software and methods.

[0044] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the above division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the displayed or discussed coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0045] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict and without creative efforts, combine, add or delete the features in the embodiments of the present utility model according to the situation or make other adjustments, so as to obtain different technical solutions that essentially do not deviate from the concept of the present utility model, and these technical solutions also belong to the scope of protection of the present utility model.

Claims

1. A coal grinding device for a gasifier, characterized in that: include: A grinding box (1), wherein the grinding box (1) is used for grinding coal; A grinding chamber (2) disposed in the grinding box (1); A grinding block (3) is rotatably installed in the grinding box (1), wherein the grinding block (3) is matched with the grinding chamber (2), and the grinding block (3) is used to grind coal; A motor (4) fixedly mounted on an outer wall of one side of the grinding box (1); A mounting shaft (5) is rotatably mounted on the grinding box (1), wherein one end of the mounting shaft (5) is fixedly connected to an output shaft of the motor (4); Two bevel gears (6) are respectively fixedly sleeved on the mounting shaft (5) and the output shaft of the grinding block (3), and the two bevel gears (6) are meshed with each other; A material unloading grid frame (7) disposed in the grinding box (1), the material unloading grid frame (7) being used for unloading coal; a mounting mechanism (8) mounted on the grinding box (1) and the material discharging grid frame (7), the mounting mechanism (8) being used to mount the material discharging grid frame (7); A material unloading mechanism (9) is mounted on the grinding box (1), and the material unloading mechanism (9) is used to drive the material unloading grid frame (7) to vibrate to unload materials.

2. The coal pulverizing device for a gasifier according to claim 1, characterized in that: The mounting mechanism (8) comprises: A mounting rod (801) fixedly mounted on the inner wall of the grinding box (1); A spring (802) sleeved on the mounting rod (801); A mounting plate (803) is fixedly mounted on the unloading grid (7), and the mounting plate (803) is slidably connected to the mounting rod (801).

3. The coal pulverizing device for a gasifier according to claim 1, characterized in that: The unloading mechanism comprises: Rotating a placement shaft (901) mounted on the grinding box (1); A protrusion (902) fixedly sleeved on the placement shaft (901); A connecting plate (903) fixedly mounted on the outer wall of the blanking grid (7), wherein the connecting plate (903) is located on one side of the protrusion (902), and the protrusion (902) and the connecting plate (903) are adapted to each other; Two first belt pulleys (904) are fixedly sleeved on the installation shaft (5) and the placement shaft (901), and a first belt (905) is sleeved on the two first belt pulleys (904).

4. The coal pulverizing device for a gasifier according to claim 1, characterized in that: A crushing box (14) is fixedly mounted on the grinding box (1), two crushing rollers (15) are rotatably mounted in the crushing box (14), the crushing rollers (15) are used to crush the coal, and a crushing mechanism is provided on the grinding box (1), the crushing mechanism is used to drive the two crushing rollers (15) to rotate relative to each other to crush the coal.

5. The coal pulverizing device for a gasifier according to claim 4, characterized in that: The crushing mechanism comprises: Two circular gears (16) are fixedly sleeved on the two crushing rollers (15), and the two circular gears (16) are meshed with each other; Two second belt pulleys (17) are fixedly mounted on one of the crushing rollers (15) and the mounting shaft (5), and a second belt (18) is mounted on the two second belt pulleys (17).

6. The coal pulverizing device for a gasifier according to claim 4, characterized in that: The grinding box (1) is provided with a collecting mechanism, which is used to collect coal powder generated during the coal crushing process, and the collecting mechanism comprises: A collecting box (10) is mounted on one side of the grinding box (1), wherein a collecting filter bag (12) is provided on the collecting box (10), and the collecting filter bag (12) is used to collect coal powder; a fan (11) fixedly mounted in the collection box (10), wherein an air outlet end of the fan (11) extends to the outside of the collection box (10); A collecting pipe (13) is fixedly mounted on the collecting box (10), and the collecting pipe (13) is connected to the crushing box (14).

7. The coal pulverizing device for a gasifier according to claim 1, characterized in that: The material unloading grid frame (7) comprises a material unloading mesh plate (701), wherein the material unloading mesh plate (701) is hingedly arranged at the bottom of the material unloading grid frame (7), a hook (19) is fixedly installed on the material unloading mesh plate (701), and a buckle (20) is fixedly installed on the material unloading grid frame (7), and the buckle (20) and the hook (19) are adaptively connected.

8. The coal pulverizing device for a gasifier according to claim 1, characterized in that: The grinding box (1) is provided with a sealing door, the sealing door is located on one side of the feeding grid (7), and the bottom of the grinding box (1) is provided with a feeding pipe, the feeding pipe is used to feed the ground coal powder.

Images