A dust monitoring and coal crushing device for coal-fired power plants

Abstract

This invention relates to the field of coal crushing technology and discloses a coal crushing device for dust monitoring in coal-fired power plants. The device includes a housing, with a filter assembly located near the lower end of the inner wall of the housing. When coal falls onto crushing rollers A and B, it is crushed by the meshing rollers A and B. The crushed coal falls directly onto the upper end of the filter screen. A vibrator is installed on one side of the lower end of the mounting frame, causing the mounting frame and filter screen to vibrate. This vibrates the crushed coal placed on the upper end of the filter screen, causing larger coal chunks to accumulate on the upper end of the filter screen. Activating the telescopic rod drives the push plate to push the accumulated coal chunks on the upper end of the filter screen to one end of the connecting trough for discharge. The filter assembly improves the quality of coal crushing.

Description

Technical Field

[0001] This invention relates to the field of coal crushing technology, specifically to a coal crushing device for dust monitoring in coal-fired power plants. Background Technology

[0002] A thermal power plant, or coal-fired power plant for short, is a factory that uses combustible materials (such as coal) as fuel to produce electricity. Before coal is used as fuel to generate electricity, it generally needs to be crushed to ensure that the coal can burn more completely. Crushing devices are usually used to crush the coal.

[0003] For example, the coal crushing device for a coal-fired power plant with application number CN201820736774.4 includes a feed hopper, hinge, cover plate, body, discharge hopper, support legs, outer shell, sound insulation cotton, crushing disc A, inner shell, crushing disc B, main shaft B, discharge port, main gear, main shaft A, V-belt, auxiliary gear, motor and pulley. It performs preliminary crushing through two crushing discs A, and then crushes through two crushing discs B, ensuring that the coal is crushed more thoroughly, so that the coal is burned more thoroughly.

[0004] When the aforementioned patented pulverizing device pulverizes coal, it feeds the coal into the device body through a hopper. After the coal is pulverized by the pulverizing structure in the device body, it falls directly to the discharge port at the bottom of the device body for discharge. This setup causes all the pulverized and uncrushed coal to accumulate together during discharge, making it impossible to control the coal pulverizing effect.

[0005] Therefore, we propose a dust monitoring and coal crushing device for coal-fired power plants to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a coal crushing device for dust monitoring in coal-fired power plants, in order to solve the problem mentioned in the background art where, when the crushing device is used to crush coal, coal is added into the device body through a feeding hopper, and after the coal is crushed by the crushing structure in the device body, the coal will fall directly to the discharge port at the lower end of the device body for discharge. This setup results in all the crushed and uncrushed coal accumulating together during discharge, making it impossible to control the coal crushing effect.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A dust monitoring and coal crushing device for coal-fired power plants includes a shell, a discharge port at the lower middle of the shell, a crushing component inside the shell, a support component fixedly installed at the lower end of the outer wall of the shell, a receiving component fixedly installed on one side of the upper end of the support component, the receiving component being configured to collect uncrushed coal, a filter component movable near the lower end of the middle of the inner wall of the shell, the filter component being configured to filter the coal crushed by the crushing component, and a pushing component being configured on one side of the upper end of the filter component, the pushing component being configured to move larger pieces of coal that fall onto the upper end of the filter component. The filter assembly includes a mounting frame and mounting blocks fixedly installed on the middle of both sides of the outer wall of the mounting frame. A filter screen is embedded in the upper end of the mounting frame, and a vibrator is installed on one side of the lower end of the mounting frame. The vibrator is designed to drive the mounting frame to vibrate, thereby discharging the coal accumulated on the upper part of the filter screen.

[0008] Preferably, a connecting groove is provided at the lower middle part of one side of the outer wall of the outer shell, a slot is provided on both sides of the middle part of the inner wall of the outer shell near the lower end, and a recessed groove is provided at the lower end of one side of the inner wall of the outer shell.

[0009] Preferably, the support assembly includes a surrounding connecting plate and support frames fixedly installed on both sides of the lower end of the surrounding connecting plate, and a mounting groove is provided on one side of the upper end of the surrounding connecting plate.

[0010] Preferably, the receiving component includes a hollow mounting block and docking plates that are respectively fixedly installed on the middle of both sides of the outer wall of the hollow mounting block.

[0011] Preferably, the crushing assembly includes a crushing roller A and a connecting shaft disposed at the middle of one end of the crushing roller A, and a crushing roller B is engaged with one end of the crushing roller A.

[0012] Preferably, the pushing assembly includes a telescopic rod and a pushing plate fixedly installed at one end of the telescopic rod.

[0013] Preferably, the telescopic rod is an electric telescopic rod.

[0014] Preferably, the upper middle part of the outer shell is provided with a feed inlet.

[0015] Preferably, a dust concentration sensor is provided on the outside of the discharge port, and the dust concentration sensor is electrically connected to the PLC controller. The PLC controller is also electrically connected to the air purification equipment.

[0016] Preferably, the dust concentration sensor is the Dongkuang'an GCG1000 model.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting up crushing roller A, crushing roller B, motor, filter assembly, filter screen, mounting frame, and vibrator, the crushed coal falling onto the upper part of the filter screen is vibrated and fed out. Larger coal lumps will accumulate on the upper part of the filter screen. The setting of the filter screen can improve the quality of coal crushing.

[0018] 2. The hollow mounting block is used to collect the coal blocks pushed out by the push plate, and can also crush larger coal blocks again. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the crushing component of the present invention; Figure 3 This is a three-dimensional structural diagram of the filter assembly of the present invention; Figure 4 This is a three-dimensional structural diagram of the driving component of the present invention.

[0020] In the diagram: 1. Outer shell; 11. Connecting groove; 12. Slot; 13. Recessed groove; 2. Feed inlet; 3. Discharge outlet; 4. Support assembly; 41. Surrounding connecting plate; 42. Support frame; 43. Installation groove; 5. Receiving assembly; 51. Hollow installation block; 52. Connecting plate; 6. Crushing assembly; 61. Crushing roller A; 62. Connecting shaft; 63. Crushing roller B; 7. Filter assembly; 71. Installation frame; 72. Mounting block; 73. Filter screen; 74. Vibrator; 8. Pushing assembly; 81. Telescopic rod; 82. Push plate. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figures 1-4A coal-fired power plant dust monitoring and coal crushing device includes a housing 1 and a feed inlet 2 located at the upper middle of the housing 1, and a discharge outlet 3 located at the lower middle of the housing 1. A dust concentration sensor is installed outside the discharge outlet 3. The dust concentration sensor is electrically connected to a PLC controller, which is also electrically connected to an air purification device. When the dust concentration sensor detects that the dust concentration exceeds a set value, the PLC controller controls the air purification device to increase the extraction volume, thereby achieving dust monitoring. The dust concentration sensor can be a Dongkuang'an GCG1000 model. The sensor's installation location, as well as the models of the PLC controller and the air purification device, are common knowledge and will not be elaborated upon here.

[0023] A crushing component 6 is provided in the inner cavity of the outer shell 1. A support component 4 is fixedly installed at the lower end of the outer wall of the outer shell 1. A receiving component 5 is fixedly installed on one side of the upper end of the support component 4. The receiving component 5 is set to collect uncrushed coal. A filter component 7 is located in the middle of the inner wall of the outer shell 1 near the lower end. The filter component 7 is set to filter the coal crushed by the crushing component 6. A pushing component 8 is set on one side of the upper end of the filter component 7. The pushing component 8 is set to move larger pieces of coal that fall onto the upper end of the filter component 7.

[0024] The filter assembly 7 includes a mounting frame 71 and mounting blocks 72 fixedly installed on the middle of both sides of the outer wall of the mounting frame 71. A filter screen 73 is embedded in the upper end of the mounting frame 71, and a vibrator 74 is provided on one side of the lower end of the mounting frame 71. The vibrator 74 is configured to drive the mounting frame 71 to vibrate, thereby feeding the coal accumulated on the upper end of the filter screen 73.

[0025] Vibrator 74 is a current technology and is not limited here. It can be installed by purchasing commercially available finished products, such as the CHBH series vibrators.

[0026] The crushing assembly 6 includes a crushing roller A61 and a connecting shaft 62 located at the middle of one end of the crushing roller A61. One end of the connecting shaft 62 is driven to rotate by the movable shaft of a motor. One end of the crushing roller A61 is meshed with a crushing roller B63. The crushing rollers A61 and B63 are used to crush coal. One end of the crushing roller B63 is also driven to rotate by the movable shaft of a motor. A set of crushing rollers A61 and B63 is provided.

[0027] The pushing assembly 8 includes an electric telescopic rod 81 and a push plate 82 fixedly installed at one end of the electric telescopic rod 81. The electric telescopic rod 81 drives the push plate 82 to push the coal piled on the upper end of the filter screen 73.

[0028] In this embodiment: when the coal falls onto the crushing rollers A61 and B63, since one end of each roller is driven by a motor to rotate, the falling coal is crushed by the meshing rollers A61 and B63. The crushed coal falls directly onto the upper end of the filter assembly 7, i.e., the upper end of the filter screen 73. Since a vibrator 74 is provided on one side of the lower end of the mounting frame 71, the vibrator 74 drives the mounting frame 71 and the filter screen 73. Vibration is applied to vibrate and discharge the crushed coal placed on the upper part of the filter screen 73. Larger coal lumps will accumulate on the upper part of the filter screen 73. By activating the electric telescopic rod 81, the push plate 82 is moved, which pushes the coal lumps accumulated on the upper part of the filter screen 73 to one end of the connecting trough 11 for discharge. The larger coal lumps discharged from the inner cavity of the connecting trough 11 are collected by the hollow mounting block 51. The setting of the filter assembly 7 can improve the quality of coal crushing.

[0029] Example 2: This example is an improvement on Example 1. For details, please refer to [link / reference]. Figure 4 A connecting groove 11 is provided in the middle of the lower end of one side of the outer wall of the outer shell 1. A slot 12 is provided on both sides of the middle of the inner wall of the outer shell 1 near the lower end. A recessed groove 13 is provided in the lower end of one side of the inner wall of the outer shell 1. The connecting groove 11 and the recessed groove 13 are horizontally arranged, and the slot 12 is located at the lower end of the connecting groove 11 and the recessed groove 13. The mounting block 72 is movably limited in the inner cavity of the slot 12.

[0030] The support assembly 4 includes a surrounding connecting plate 41 and a support frame 42 fixedly installed on both sides of the lower end of the surrounding connecting plate 41. A mounting groove 43 is provided on one side of the upper end of the surrounding connecting plate 41.

[0031] The receiving component 5 includes a hollow mounting block 51 and docking plates 52 respectively fixedly installed on the middle of the outer wall of the hollow mounting block 51. The lower end of the hollow mounting block 51 is movably installed in the inner cavity of the mounting groove 43. The docking plates 52 are screwed and threaded onto the upper end of the surrounding connecting plate 41 on both sides, thereby fixing the hollow mounting block 51 in the inner cavity of the mounting groove 43.

[0032] In this embodiment: after the coal blocks in the inner cavity of the connecting groove 11 are pushed down into the inner cavity of the hollow placement block 51 by the push plate 82, after the coal blocks in the inner cavity of the hollow placement block 51 are full, the operator can loosen the screws threaded on the upper end of the docking plate 52, remove the screws from the upper end of the docking plate 52, and then directly remove the hollow placement block 51 containing larger coal blocks from the inner cavity of the placement groove 43, thereby crushing the larger coal blocks again.

[0033] Working principle: When coal falls onto crushing rollers A61 and B63, both rollers are driven by motors to rotate, causing the coal to be crushed by the meshing rollers. The crushed coal falls directly onto the upper part of the filter assembly 7, i.e., the upper part of the filter screen 73. A vibrator 74 is installed on one side of the lower end of the mounting frame 71, causing the mounting frame 71 and the filter screen 73 to vibrate. This vibrates and feeds the crushed coal placed on the upper part of the filter screen 73, while larger coal lumps accumulate on the filter screen. At the upper end of 73, the electric telescopic rod 81 is activated to drive the push plate 82 to move, thereby pushing the coal blocks accumulated on the upper end of the filter screen 73 to one end of the connecting groove 11 for discharge. The hollow mounting block 51 collects the larger coal blocks discharged from the inner cavity of the connecting groove 11. After the inner cavity of the hollow mounting block 51 is full of coal blocks, the operator can loosen the screws threaded on the upper end of the docking plate 52, remove the screws from the upper end of the docking plate 52, and then directly remove the hollow mounting block 51 containing the larger coal blocks from the inner cavity of the mounting groove 43, thereby crushing the larger coal blocks again.

[0034] The power supply and principle of electric telescopic poles are clear to those skilled in the art, and will not be described in detail here. The specific model and specifications of electric telescopic poles need to be selected and determined according to the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail here.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A coal-fired power plant dust monitoring and coal crushing device, comprising a shell (1), a discharge port (3) provided at the lower middle part of the shell (1), and a crushing component (6) provided in the inner cavity of the shell (1), characterized in that: A support component (4) is fixedly installed on the lower end of the outer wall of the outer shell (1). A receiving component (5) is fixedly installed on one side of the upper end of the support component (4). The receiving component (5) is set to collect uncrushed coal. A filter component (7) is located in the middle of the inner wall of the outer shell (1) near the lower end. The filter component (7) is set to filter the coal crushed by the crushing component (6). A pushing component (8) is set on one side of the upper end of the filter component (7). The pushing component (8) is set to move the position of larger coal that falls on the upper end of the filter component (7). The filter assembly (7) includes a mounting frame (71) and mounting blocks (72) fixedly installed on the middle of both sides of the outer wall of the mounting frame (71). A filter screen (73) is embedded in the upper end of the mounting frame (71), and a vibrator (74) is provided on one side of the lower end of the mounting frame (71). The vibrator (74) is set to drive the mounting frame (71) to vibrate, thereby feeding the coal piled on the upper end of the filter screen (73).

2. The dust monitoring and coal crushing device for coal-fired power plants according to claim 1, characterized in that: A connecting groove (11) is provided in the middle of the lower end of one side of the outer wall of the outer shell (1), and slots (12) are provided on both sides of the middle of the inner wall of the outer shell (1) near the lower end. A recessed groove (13) is provided in the lower end of one side of the inner wall of the outer shell (1).

3. The dust monitoring and coal crushing device for coal-fired power plants according to claim 1, characterized in that: The support assembly (4) includes a surrounding connecting plate (41) and a support frame (42) fixedly installed on both sides of the lower end of the surrounding connecting plate (41). A mounting groove (43) is provided on one side of the upper end of the surrounding connecting plate (41).

4. The dust monitoring and coal crushing device for coal-fired power plants according to claim 1, characterized in that: The receiving component (5) includes a hollow mounting block (51) and docking plates (52) that are respectively fixedly installed on the middle of the outer walls of the hollow mounting block (51).

5. The dust monitoring and coal crushing device for coal-fired power plants according to claim 1, characterized in that: The crushing assembly (6) includes a crushing roller A (61) and a connecting shaft (62) located at the middle of one end of the crushing roller A (61). One end of the crushing roller A (61) is engaged with a crushing roller B (63).

6. The dust monitoring and coal crushing device for coal-fired power plants according to claim 1, characterized in that: The pushing assembly (8) includes a telescopic rod (81) and a push plate (82) fixedly installed at one end of the telescopic rod (81).

7. A dust monitoring and coal crushing device for coal-fired power plants according to claim 6, characterized in that: The telescopic pole (81) is an electric telescopic pole.

8. The dust monitoring and coal crushing device for coal-fired power plants according to claim 1, characterized in that: The upper middle part of the outer shell (1) is provided with a feed inlet (2).

9. A dust monitoring and coal crushing device for coal-fired power plants according to claim 1, characterized in that: The discharge port (3) is equipped with a dust concentration sensor on its exterior. The dust concentration sensor is electrically connected to the PLC controller, and the PLC controller is also electrically connected to the air purification equipment.

10. A dust monitoring and coal crushing device for coal-fired power plants according to claim 9, characterized in that: The dust concentration sensor is the Dongkuang'an GCG1000 model.

Images