On-line detection device for quality of coal as fired

Abstract

The utility model relates to the technical field of coal quality detection, in particular to an on-line detection device for coal as fired. According to the technical scheme, the device comprises an assembly line frame, the top of the assembly line frame is rotationally connected with a conveying belt, a crushing bin is fixedly installed at the top of the middle position of the assembly line frame, and a camera is arranged in the crushing bin; and the intercepting and crushing assembly comprises a transposition shaft, a shovel plate, a driving shaft, a rotating assembly and an angle sensor, and the shovel plate is fixedly installed on a rod body of the transposition shaft. Large-particle coal is intercepted through the two adjacent shovel plates, the effect of intercepting and screening is achieved, along with the increase of the intercepted large-particle coal, the shovel plates are pushed by the large-particle coal conveyed on the conveying belt, so that rotation is detected by the angle sensor, and the large-particle coal is screened. And the stepping motor drives the bucket to rotate and crushes the large-particle coal in the bucket together with the puncture crushing assembly, so that the large-particle coal is intercepted to be crushed, and the situation that the large-particle coal enters the furnace to reduce the combustion effect is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of coal quality detection, in particular to an online detection device for coal quality entering a furnace. Background Art

[0002] Online testing of coal quality before it enters the boiler refers to the process of real-time monitoring and analysis of coal quality before it enters the boiler. This testing can help power companies to timely understand the quality of coal entering the boiler, so as to take corresponding measures to ensure the safety and stable operation of the boiler and improve combustion efficiency. Testing items include particle size, moisture, fixed carbon and grindability index, among which the particle size distribution of coal affects the uniformity and efficiency of combustion.

[0003] In the prior art, the fuel coal is transported by a coal conveyor driven by a coal conveyor motor, and the coal is sampled by a sampling machine to analyze the coal quality, and the online data of the coal quality entering the furnace required for real-time operation control is obtained.

[0004] However, this type of on-line detection device for the quality of coal entering the furnace requires continuous sampling. If the sampling is performed at regular intervals, sampling deviations may occur, and coal with particle sizes that do not meet the standards may be transported. Utility Model Content

[0005] The utility model aims to propose an online detection device for coal quality entering a furnace in view of the problem of sampling deviation in timed sampling in the background technology.

[0006] The technical solution of the utility model is: an online detection device for coal quality entering the furnace, comprising:

[0007] An assembly line frame, the top of which is rotatably connected to a conveyor belt, a crushing bin is fixedly installed on the top of the middle part of the assembly line frame, and a camera is arranged inside the crushing bin;

[0008] The interception and crushing assembly comprises a transposition shaft, a shovel plate, a driving shaft, a rotating assembly and an angle sensor, wherein the shovel plate is fixedly mounted on the shaft of the transposition shaft, the end of the transposition shaft is rotatably connected to the driving shaft through the rotating assembly, and the angle sensor is fixedly mounted on one end of the driving shaft facing the driving shaft;

[0009] A stepper motor is fixedly installed on the side of the crushing bin, the stepper motor is fixedly connected to the drive shaft through a rotating shaft, the angle sensor is electrically connected to the stepper motor, and a puncture and crushing assembly is provided on the top inner wall of the crushing bin, and the puncture and crushing assembly is located on the rotation path of the shovel plate.

[0010] Optionally, a plurality of shovel plates are provided and are equidistantly distributed in a straight line along the transposition axis, and there is a distance between two adjacent shovel plates. The coal is transported on the conveyor belt, and the coal passes between two adjacent shovel plates.

[0011] Optionally, the shovel plate adopts an L-shaped structure, and a guide bevel is provided at the end of the shovel plate. The coal transported on the conveyor belt is guided toward one end of the guide bevel of the shovel plate, and a first baffle is fixedly installed on the rod body of the transposition shaft near the end position.

[0012] Optionally, the rotating assembly includes a rotating groove, a rotating block and a torque spring, a rotating groove is opened on one end of the transposition shaft facing the driving shaft, a rotating block is fixedly installed on one end of the driving shaft facing the transposition shaft, the rotating block rotates in the rotating groove, a torque spring is elastically connected between the rotating groove and the driving shaft, an end of the transposition shaft is rotatably connected to the crushing bin, and the driving shaft is arranged inside the crushing bin.

[0013] Optionally, a plurality of rotating blocks are provided and are distributed in a circular manner with equal angles at the end of the driving shaft, and the end of the transposition shaft is provided with rotating grooves corresponding to the number of rotating blocks.

[0014] Optionally, the shovel plate and the first baffle plate form a bucket, and a plurality of the buckets are provided and are distributed in a circular manner at equal angles in the middle of the transposition shaft.

[0015] Optionally, the puncture and crushing assembly includes a crushing plate and a second baffle plate, wherein a plurality of crushing plates are provided and are equidistantly distributed along a straight line on the top inner wall of the crushing bin, and the second baffle plates are fixedly mounted on the sides of the two outermost crushing plates.

[0016] Optionally, the shape of the crushing plate is the same as that of the shovel plate, and the position of the crushing plate is staggered from that of the shovel plate. Strip grooves are provided on both sides of the crushing plate. A roller is rotatably connected in the strip groove on the side of the crushing plate, and a plurality of needles are fixedly installed on the shaft of the roller.

[0017] Compared with the prior art, the utility model has the following beneficial technical effects:

[0018] The utility model intercepts large coal particles by two adjacent shovel plates, thereby achieving the effect of intercepting and screening. As the number of large coal particles intercepted increases, the shovel plates are pushed by the large coal particles transported on the conveyor belt, so that the angle sensor detects rotation, and the stepper motor drives the bucket to rotate and cooperates with the puncture and crushing component to crush the large coal particles in the bucket, thereby intercepting and crushing the large coal particles, preventing the large coal particles from entering the furnace and reducing the combustion effect.

[0019] Furthermore, when the shovel plate and the crushing plate are clamped together to crush the large particles of coal, the large particles of coal are pierced and crushed by the needles on the rollers, and the intercepted large particles of coal are crushed and then transported into the furnace, thereby improving the crushing effect and avoiding the presence of large particles of coal after the crushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1A schematic diagram of the overall structure of an embodiment of the utility model is given;

[0021] Figure 2 This is a schematic diagram of the main cross-sectional view of the crushing bin structure;

[0022] Figure 3 It is a schematic diagram of the shovel plate structure;

[0023] Figure 4 It is a schematic diagram of the separation state of the transfer block structure;

[0024] Figure 5 It is a schematic diagram of the main cross-section of the crushing plate structure.

[0025] Figure numerals: 1. assembly line frame; 2. conveyor belt; 3. crushing bin; 4. intercepting crushing assembly; 41. transposition shaft; 42. shovel plate; 43. first baffle; 44. guide bevel block; 45. driving shaft; 46. rotating groove; 47. rotating block; 48. torque spring; 49. angle sensor; 5. stepping motor; 6. puncture crushing assembly; 61. crushing plate; 62. rotating roller; 63. pricking needle; 64. second baffle. DETAILED DESCRIPTION

[0026] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0027] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0028] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Example 1

[0032] like Figure 1 As shown, this embodiment proposes an online detection device for coal quality entering a furnace, comprising an assembly line frame 1, a conveyor belt 2 is rotatably connected to the top of the assembly line frame 1, a crushing bin 3 is fixedly installed on the top of the middle position of the assembly line frame 1, and a camera is arranged inside the crushing bin 3;

[0033] like Figure 2 and Figure 3 As shown, the inner wall of the crushing bin 3 is provided with an intercepting and crushing assembly 4, which includes a transposition shaft 41, a shovel plate 42, a drive shaft 45, a rotating assembly and an angle sensor 49. The rod of the transposition shaft 41 is fixed with a shovel plate 42. A plurality of shovel plates 42 are provided and are evenly distributed along the transposition shaft 41 in a straight line. There is a gap between two adjacent shovel plates 42. The conveyor belt 2 transports coal, and the coal passes between two adjacent shovel plates 42. Small particles of coal pass between the two shovel plates 42, while large particles of coal are intercepted by the two shovel plates 42, thereby intercepting large particles of coal to prevent large particles of coal from entering the furnace and affecting the combustion efficiency.

[0034] like Figure 3 As shown, the shovel plate 42 adopts an L-shaped structure, and a guide bevel block 44 is provided at the end of the shovel plate 42. The coal transported on the conveyor belt 2 is directed toward one end of the guide bevel block 44 on the shovel plate 42, and a first baffle plate 43 is fixedly installed on the rod body of the transposition shaft 41 near the end. When the conveyor belt 2 drives the coal to move, the large particles of coal move along the shovel plate 42 to the transposition shaft 41, and at the same time, the transposition shaft 41 lifts the large particles of coal, and the small particles of coal move between the two shovel plates 42 and below the large particles of coal, so as to prevent the large particles of coal from blocking the movement of the small particles of coal, and maintain the conveying speed of the small particles of coal, so as to maintain the combustion efficiency in the furnace.

[0035] The shovel plate 42 and the first baffle plate 43 form a bucket, and multiple buckets are provided, and are distributed in a circular manner at equal angles in the middle of the transposition shaft 41. The coal is shoveled up by the bucket. The top inner wall of the crushing chamber 3 is provided with a puncture crushing assembly 6, and the puncture crushing assembly 6 is located on the rotation path of the shovel plate 42. When the bucket that intercepts the coal is lifted, the bucket on its right rotates to intercept again, so as to prevent large particles of coal from entering the furnace when one of the buckets is lifted.

[0036] As the number of intercepted large coal particles increases, the large coal particles cause blockage on the conveyor belt 2. At this time, the conveyor belt 2 transports coal, and the coal pushes the shovel plate 42 to rotate, so that the transposition shaft 41 rotates, and the drive shaft 45 is fixedly installed with an angle sensor 49 toward one end of the drive shaft 45. The side of the crushing chamber 3 is fixedly installed with a stepper motor 5, and the stepper motor 5 is fixedly connected to the drive shaft 45 through a rotating shaft. The angle sensor 49 is electrically connected to the stepper motor 5 through a controller. The angle sensor 49 detects that relative rotation occurs between the transposition shaft 41 and the drive shaft 45. At this time, the angle sensor 49 starts the stepper motor 5, so that the transposition shaft 41 rotates clockwise, moving the intercepted coal toward the direction of the puncture and crushing assembly 6, and the shovel plate 42 and the puncture and crushing assembly 6 clamp the coal to crush it.

[0037] like Figure 3 and Figure 4 As shown, the end of the transposition shaft 41 is rotatably connected to the drive shaft 45 through a rotating assembly, and the rotating assembly includes a rotating groove 46, a rotating block 47 and a torque spring 48. The transposition shaft 41 has a rotating groove 46 at one end facing the drive shaft 45, and a rotating block 47 is fixedly installed at one end of the drive shaft 45 facing the transposition shaft 41. The rotating block 47 rotates in the rotating groove 46, and the torque spring 48 is elastically connected between the rotating groove 46 and the drive shaft 45. The end of the transposition shaft 41 is rotatably connected to the crushing bin 3, and the drive shaft 45 is arranged inside the crushing bin 3.

[0038] The rotating groove 46 and the rotating block 47 cooperate to make way for the rotation of the shovel plate 42. After the coal is piled on the shovel plate 42, the rotating groove 46 makes way for the relative rotation of the transposition shaft 41 and the driving shaft 45. The stepper motor 5 drives the driving shaft 45 to rotate, and the rotating block 47 rotates in the rotating groove 46. Finally, the rotating block 47 drives the transposition shaft 41 to rotate.

[0039] In this embodiment, the coal is intercepted by the shovel plate 42, and the amount of large coal particles intercepted increases. The shovel plate 42 is pushed by the large coal particles transported on the conveyor belt 2, so that the angle sensor 49 detects the rotation, and the stepper motor 5 drives the bucket to rotate and cooperates with the piercing and crushing component 6 to crush the large coal particles in the bucket, thereby intercepting and crushing the large coal particles, preventing the large coal particles from entering the furnace and reducing the combustion effect.

[0040] Example 2

[0041] like Figure 5 As shown, based on Example 1, this embodiment proposes an online detection device for the quality of coal entering the furnace. The puncture and crushing assembly 6 includes a crushing plate 61 and a second baffle 64. A plurality of crushing plates 61 are arranged and are equidistantly distributed along a straight line on the top inner wall of the crushing bin 3. The second baffles 64 are fixedly installed on the sides of the two outermost crushing plates 61.

[0042] The crushing plate 61 has the same shape as the shovel plate 42, and the position of the crushing plate 61 is staggered from the position of the shovel plate 42. Strip grooves are provided on both sides of the crushing plate 61. A roller 62 is rotatably connected in the strip groove on the side of the crushing plate 61. A plurality of thorns 63 are fixedly installed on the shaft of the roller 62. When the shovel plate 42 and the roller 62 crush the large particles of coal, the large particles of coal are pierced and crushed by the thorns 63 on the roller 62.

[0043] In this embodiment, when the shovel plate 42 and the crushing plate 61 are clamped together to crush the large particles of coal, the large particles of coal are pierced and crushed by the needles 63 on the rollers 62, and the intercepted large particles of coal are crushed and then transported into the furnace.

[0044] The above-mentioned specific embodiments are only several optional embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. An online detection device for coal quality entering a furnace, characterized in that: include: An assembly line frame (1), wherein the top of the assembly line frame (1) is rotatably connected to a conveyor belt (2), a crushing bin (3) is fixedly installed on the top of the middle position of the assembly line frame (1), and a camera is arranged inside the crushing bin (3); The interception and crushing assembly (4) comprises a transposition shaft (41), a shovel plate (42), a drive shaft (45), a rotation assembly and an angle sensor (49), wherein the shovel plate (42) is fixedly mounted on the shaft of the transposition shaft (41), the end of the transposition shaft (41) is rotationally connected to the drive shaft (45) through the rotation assembly, and the angle sensor (49) is fixedly mounted on one end of the drive shaft (45) facing the drive shaft (45); A stepper motor (5) is fixedly mounted on the side of the crushing bin (3), the stepper motor (5) is fixedly connected to the drive shaft (45) via a rotating shaft, the angle sensor (49) is electrically connected to the stepper motor (5), and a puncture and crushing assembly (6) is provided on the top inner wall of the crushing bin (3), the puncture and crushing assembly (6) is located on the rotation path of the shovel plate (42).

2. The device for online detection of coal quality entering a furnace according to claim 1, characterized in that: A plurality of shovel plates (42) are provided and are equidistantly distributed in a straight line along the transposition axis (41), and there is a spacing between two adjacent shovel plates (42). The conveyor belt (2) transports coal, and the coal passes between two adjacent shovel plates (42).

3. The device for online detection of coal quality entering a furnace according to claim 1, characterized in that: The shovel plate (42) is of L-shaped structure, and a guide bevel block (44) is provided at the end of the shovel plate (42). The coal transported on the conveyor belt (2) is directed toward one end of the guide bevel block (44) of the shovel plate (42), and a first baffle plate (43) is fixedly installed on the rod body of the transposition shaft (41) near the end position.

4. The device for online detection of coal quality entering a furnace according to claim 3, characterized in that: The rotating assembly comprises a rotating groove (46), a rotating block (47) and a torque spring (48); the rotating groove (46) is provided at one end of the transposition shaft (41) facing the driving shaft (45); a rotating block (47) is fixedly installed at one end of the driving shaft (45) facing the transposition shaft (41); the rotating block (47) rotates in the rotating groove (46); a torque spring (48) is elastically connected between the rotating groove (46) and the driving shaft (45); an end of the transposition shaft (41) is rotatably connected to the crushing bin (3); and the driving shaft (45) is arranged inside the crushing bin (3).

5. The device for online detection of coal quality entering a furnace according to claim 4, characterized in that: A plurality of rotating blocks (47) are provided and are distributed in an annular manner at equal angles at the end of the driving shaft (45), and a number of rotating grooves (46) corresponding to the number of rotating blocks (47) is formed at the end of the transposition shaft (41).

6. The device for online detection of coal quality entering a furnace according to claim 5, characterized in that: The shovel plate (42) and the first baffle plate (43) form a shovel bucket, and a plurality of shovel buckets are provided and are distributed in a circular manner at equal angles in the middle of the transposition shaft (41).

7. The device for online detection of coal quality entering a furnace according to claim 1, characterized in that: The puncture and crushing assembly (6) comprises a crushing plate (61) and a second baffle (64). A plurality of crushing plates (61) are provided and are equidistantly distributed along a straight line on the top inner wall of the crushing bin (3). The second baffles (64) are fixedly mounted on the sides of the two outermost crushing plates (61).

8. The device for online detection of coal quality entering a furnace according to claim 7, characterized in that: The shape of the crushing plate (61) is the same as that of the shovel plate (42), and the position of the crushing plate (61) is staggered from that of the shovel plate (42). Strip grooves are provided on both sides of the crushing plate (61), and a roller (62) is rotatably connected in the strip groove on the side of the crushing plate (61), and a needle (63) is fixedly installed on the shaft of the roller (62).

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