Coal grinding auxiliary mechanism for combustion transformation of thermal power plant

Abstract

The utility model belongs to the technical field of thermal power generating unit transformation, and particularly relates to a coal grinding auxiliary mechanism for thermal power plant combustion transformation, which comprises a bottom plate, the left side of the upper surface of the bottom plate is fixedly connected with the bottom end of a stand column, and two sliding grooves are formed in the left side face of the stand column. The opposite ends of the two sliding grooves are fixedly connected with the opposite ends of two electric push rods correspondingly. When the coal dust collecting device is used for treating coal dust generated when the coal grinding equipment works, the device can be moved to one side of the coal grinding equipment, and the drainage covers in the two dust collecting mechanisms correspond to a feeding port and a discharging port of the coal grinding equipment respectively; therefore, coal dust escaped from the feed port and the discharge port of the coal milling equipment is sucked into the filter box by the fan to be filtered, pollution of a large amount of coal dust generated when the coal milling equipment works to the production environment and the natural environment is avoided, and environment-friendly transformation of the existing coal milling equipment in a thermal power plant is facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of thermal power unit retrofitting technology, specifically relating to a coal mill auxiliary mechanism for combustion retrofitting in thermal power plants. Background Technology

[0002] A thermal power plant is a factory that uses combustible materials, such as coal, as fuel to produce electricity. When the fuel in a thermal power plant is burned, it heats water to generate steam, which converts the chemical energy of the fuel into heat energy. The steam pressure drives the turbine to rotate, converting the heat energy into mechanical energy. Then, the turbine drives the generator to rotate, converting the mechanical energy into electrical energy. The main fuel in a thermal power plant is coal. Before burning coal, the coal needs to be crushed and ground to increase the contact area between the coal and air, so that the coal can burn completely.

[0003] In the prior art, coal grinding equipment is usually used to crush and grind coal blocks. However, most existing coal grinding equipment does not have the corresponding dust treatment function. For example, in the authorization announcement CN 218486057 U, a coal block crushing device for a coal conveying system in a thermal power plant, a large amount of dust will escape from the feed port and discharge port of the equipment during the grinding process, thus polluting the surrounding environment. Utility Model Content

[0004] The purpose of this utility model is to provide a coal mill auxiliary mechanism for combustion modification in thermal power plants. It can collect and filter coal dust escaping from the coal mill during operation, thereby preventing coal dust from spreading and causing environmental pollution. It is applicable to coal mills of different sizes and specifications, and is suitable for environmental protection modification of existing equipment in thermal power plants.

[0005] The specific technical solution adopted by this utility model is as follows:

[0006] A coal mill auxiliary mechanism for combustion modification in thermal power plants includes a base plate. The left side of the upper surface of the base plate is fixedly connected to the bottom end of a column. Two sliding grooves are opened on the left side of the column. The opposite ends of the two sliding grooves are fixedly connected to the opposite ends of two electric push rods. The opposite ends of the two electric push rods are respectively connected to two dust collection mechanisms. Both electric push rods are electrically connected to a controller.

[0007] Both of the aforementioned dust collection mechanisms are connected to a diversion pipe, which is fixedly connected to the air inlet pipe of the fan. The fan is fixedly mounted on the upper surface of the filter box, and the air outlet pipe of the fan extends into the interior of the filter box.

[0008] Each of the aforementioned vacuuming mechanisms includes a fixing plate, the left side of which is fixedly connected to the right end of the hood.

[0009] The drainage cover is fixedly connected to and communicates with the left end of the telescopic hose, the right end of the telescopic hose is fixedly connected to and communicates with the diversion pipe, and the right side of the fixing plate is simultaneously fixedly connected to the left ends of the two screws.

[0010] The two screws are respectively threaded to the two threaded cylinders, and the two threaded cylinders are rotatably connected to the left end of the lifting block through bearings.

[0011] The right end of the lifting block is fixedly connected to the end of the electric push rod. The right end of the lifting block is also provided with a sleeve hole to be sleeved with the slide rod. The end of the slide rod is fixedly connected to the end face of the slide groove.

[0012] Both threaded cylinders are fixedly equipped with sprockets at their left ends, and the two sprockets are connected by a chain drive. A gear is also fixedly equipped on the left side of the front threaded cylinder.

[0013] Gear 1 and Gear 2 are meshed together. Gear 2 is fixedly mounted on the output shaft of the motor. The motor is fixedly connected to the lifting block via a mounting base. The motor is electrically connected to the controller.

[0014] The bottom surface of the filter box is fixedly connected to the upper surface of the base plate. Multiple sets of slots are provided on the inner wall of the filter box, and each set of slots is simultaneously provided on the left, right inner sides and front surface of the filter box.

[0015] The multiple sets of slots are respectively connected to multiple fixed frames, and a filter screen is fixedly installed in each fixed frame.

[0016] The controller is fixedly mounted on the front side of the filter box and is also electrically connected to the fan. The bottom of the base plate is equipped with casters at all four corners, and the bottom of the rear side of the filter box is provided with an air outlet slot.

[0017] The technical effects achieved by this utility model are as follows:

[0018] This invention features two dust collection mechanisms mounted on a column. When using this device to treat coal dust generated during the operation of a coal mill, the device can be moved to one side of the mill, aligning the two dust collection mechanisms with the feed inlet and discharge outlet of the mill. A fan then draws the coal dust escaping from the feed inlet and discharge outlet into a filter box for filtration, thus preventing the generation of large amounts of coal dust during mill operation from polluting the production and natural environments. This facilitates environmental upgrades of existing coal mills in thermal power plants. Furthermore, the spacing between the two dust collection mechanisms and the lateral position of the two dust collection mechanisms can be adjusted according to the size and specifications of the mill, ensuring that the two dust collection mechanisms correspond to the feed inlet and discharge outlet, effectively improving the device's applicability. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the present invention;

[0020] Figure 2 This is a front view cross-sectional structural diagram of the column of this utility model;

[0021] Figure 3 This is a schematic diagram of the right-side cross-sectional structure of the filter box in this utility model;

[0022] Figure 4 This is a schematic diagram of the dust collection mechanism in this utility model;

[0023] Figure 5 This is a schematic diagram of the lifting block in this utility model.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Base plate; 2. Filter box; 3. Fixing frame; 4. Casters; 5. Column; 6. Fan; 7. Dust collection mechanism; 71. Fixing plate; 72. Telescopic hose; 73. Drainage hood; 74. Lifting block; 75. Screw; 76. Sprocket; 77. Gear 1; 78. Threaded cylinder; 79. Sleeve hole; 710. Motor; 711. Gear 2; 8. Electric push rod; 9. Slide rod; 10. Slide groove; 11. Controller; 12. Slot; 13. Filter screen; 14. Diverter pipe. Detailed Implementation

[0026] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0027] like Figure 1-5 As shown, a coal mill auxiliary mechanism for combustion modification in a thermal power plant includes a base plate 1. The upper left side of the base plate 1 is fixedly connected to the bottom end of a column 5. Two sliding grooves 10 are opened on the left side of the column 5. The opposite ends of the two sliding grooves 10 are fixedly connected to the opposite ends of two electric push rods 8 respectively. The opposite ends of the two electric push rods 8 are respectively connected to two dust collection mechanisms 7. Both electric push rods 8 are electrically connected to a controller 11.

[0028] Both vacuuming mechanisms 7 are connected to the diversion pipe 14, which is fixedly connected to the air inlet pipe of the fan 6. The fan 6 is fixedly installed on the upper surface of the filter box 2, and the air outlet pipe of the fan 6 extends into the interior of the filter box 2.

[0029] Furthermore, each vacuuming mechanism 7 includes a fixing plate 71, the left side of which is fixedly connected to the right end of the hood 73.

[0030] Furthermore, the drainage hood 73 is fixedly connected to and communicates with the left end of the telescopic hose 72, the right end of the telescopic hose 72 is fixedly connected to and communicates with the diversion pipe 14, and the right side of the fixing plate 71 is simultaneously fixedly connected to the left end of the two screws 75.

[0031] Furthermore, the two screws 75 are threadedly connected to the two threaded cylinders 78 respectively. Both threaded cylinders 78 are rotatably connected to the left end of the lifting block 74 through bearings. The user can control the motor 710 to drive the fixed plate 71 and the flow guide hood 73 to move left and right by using gear 1 77, gear 2 711, sprocket 76, threaded cylinder 78 and screw 75. This makes the flow guide hood 73 closer to the feed inlet and discharge outlet of the coal mill, thereby improving the dust collection effect of the dust collection mechanism 7 and making this device suitable for different coal mills.

[0032] Furthermore, the right end of the lifting block 74 is fixedly connected to the end of the electric push rod 8. The right end of the lifting block 74 is also provided with a sleeve hole 79 to be sleeved with the slide rod 9. The end of the slide rod 9 is fixedly connected to the end face of the slide groove 10. By setting the electric push rod 8 to connect with the lifting block 74, the height of the two guide hoods 73 can be adjusted according to the height of the feed inlet and discharge outlet of the coal mill when using this device. At this time, the user can control the extension and retraction of the electric push rod 8 through the controller 11 to adjust the height of the two dust collection mechanisms 7. When the two guide hoods 73 correspond to the feed inlet and discharge outlet of the coal mill respectively, the extension and retraction of the electric push rod 8 can be stopped.

[0033] Furthermore, a sprocket 76 is fixedly installed at the left end of each of the two threaded cylinders 78, and the two sprockets 76 are connected by a chain drive. A gear 77 is also fixedly installed on the left side of the front threaded cylinder 78.

[0034] Furthermore, gear 1 77 meshes with gear 2 711, gear 2 711 is fixedly mounted on the output shaft of motor 710, motor 710 is fixedly connected to lifting block 74 through mounting base, and motor 710 is electrically connected to controller 11.

[0035] Furthermore, the bottom surface of the filter box 2 is fixedly connected to the upper surface of the base plate 1. Multiple sets of slots 12 are opened on the inner wall of the filter box 2. Each set of slots 12 is opened on the left, right inner side and front surface of the filter box 2. By opening slots 12 in the filter box 2 and inserting the fixing frame 3 into the slots 12, it is convenient for the user to disassemble and install the fixing frame 3 and the filter screen 13 to clean and replace the filter screen 13, thereby ensuring the filtration effect of the filter screen 13.

[0036] Furthermore, multiple sets of slots 12 are respectively connected to multiple fixed frames 3. Each fixed frame 3 is fixedly provided with a filter screen 13. The inner side of the slot 12 is provided with a sealing gasket to keep in close contact with the fixed frame 3, so as to improve the sealing performance of the connection between the fixed frame 3 and the slot 12.

[0037] Furthermore, the controller 11 is fixedly installed on the front side of the filter box 2. The controller 11 is also electrically connected to the fan 6. Universal wheels 4 are provided at the four corners of the bottom surface of the base plate 1. An air outlet slot is provided at the bottom of the rear side of the filter box 2.

[0038] The working principle of this utility model is as follows: When using this device to treat the coal dust generated by the coal mill, the user can use the caster 4 to move the device to one side of the coal mill. Then, the user can adjust the height of the two guide hoods 73 according to the height of the coal mill inlet and outlet. At this time, the user can use the controller 11 to control the extension and retraction of the electric push rod 8 to adjust the height of the two dust collection mechanisms 7. When the two guide hoods 73 correspond to the inlet and outlet of the coal mill respectively, the extension and retraction of the electric push rod 8 can be stopped. Then, the user can control the motor 710 to work and use gear 1 77, gear 2 711, sprocket 76, threaded cylinder 78 and screw 75 to drive the fixed plate 71 and the guide hoods 73 to move left and right, so that the guide hoods 73 are close to the inlet and outlet of the coal mill.

[0039] When the coal grinding equipment is grinding and crushing coal blocks, the user controls the blower 6 to work through the controller 11. When the blower 6 is working, it uses the telescopic hose 72 and the diversion hood 73 to suck the coal dust escaping from the feed port and the discharge port into the filter box 2, and uses the filter screen 13 in the filter box 2 to adsorb and filter the coal dust.

[0040] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A coal mill auxiliary mechanism for combustion modification in thermal power plants, comprising a base plate (1), characterized in that: The upper surface of the base plate (1) is fixedly connected to the bottom end of the column (5) on the left side. Two sliding grooves (10) are opened on the left side of the column (5). The opposite ends of the two sliding grooves (10) are fixedly connected to the opposite ends of the two electric push rods (8). The opposite ends of the two electric push rods (8) are connected to the two vacuuming mechanisms (7) respectively. Both electric push rods (8) are electrically connected to the controller (11). Both of the aforementioned dust collection mechanisms (7) are connected to the diversion pipe (14), which is fixedly connected to the air inlet pipe of the fan (6). The fan (6) is fixedly installed on the upper surface of the filter box (2), and the air outlet pipe of the fan (6) extends into the interior of the filter box (2).

2. The coal mill auxiliary mechanism for combustion modification in thermal power plants according to claim 1, characterized in that: Each of the vacuuming mechanisms (7) includes a fixing plate (71), the left side of which is fixedly connected to the right end of the hood (73).

3. The coal mill auxiliary mechanism for combustion modification in thermal power plants according to claim 2, characterized in that: The drainage cover (73) is fixedly connected to the left end of the telescopic hose (72) and communicates with it. The right end of the telescopic hose (72) is fixedly connected to the diversion pipe (14) and communicates with it. The right side of the fixing plate (71) is simultaneously fixedly connected to the left end of the two screws (75).

4. The coal mill auxiliary mechanism for combustion modification in thermal power plants according to claim 3, characterized in that: The two screws (75) are threadedly connected to the two threaded cylinders (78) respectively, and the two threaded cylinders (78) are rotatably connected to the left end of the lifting block (74) through bearings.

5. A coal mill auxiliary mechanism for combustion modification in thermal power plants according to claim 4, characterized in that: The right end of the lifting block (74) is fixedly connected to the end of the electric push rod (8). The right end of the lifting block (74) is also provided with a sleeve hole (79) to be sleeved with the slide rod (9). The end of the slide rod (9) is fixedly connected to the end face of the slide groove (10).

6. A coal mill auxiliary mechanism for combustion modification in thermal power plants according to claim 4, characterized in that: A sprocket (76) is fixedly installed at the left end of each of the two threaded cylinders (78), and the two sprockets (76) are connected by a chain drive. A gear (77) is also fixedly installed on the left side of the front threaded cylinder (78).

7. A coal mill auxiliary mechanism for combustion modification in thermal power plants according to claim 6, characterized in that: The gear one (77) meshes with the gear two (711), the gear two (711) is fixedly mounted on the output shaft of the motor (710), the motor (710) is fixedly connected to the lifting block (74) through the mounting base, and the motor (710) is electrically connected to the controller (11).

8. A coal mill auxiliary mechanism for combustion modification in thermal power plants according to claim 1, characterized in that: The bottom surface of the filter box (2) is fixedly connected to the upper surface of the base plate (1). Multiple sets of slots (12) are opened on the inner wall of the filter box (2). Each set of slots (12) is opened on the left, right inner side and front surface of the filter box (2).

9. A coal mill auxiliary mechanism for combustion modification in thermal power plants according to claim 8, characterized in that: The multiple sets of slots (12) are respectively connected to multiple fixed frames (3), and each fixed frame (3) is fixedly provided with a filter screen (13).

10. A coal mill auxiliary mechanism for combustion modification in thermal power plants according to claim 1, characterized in that: The controller (11) is fixedly installed on the front side of the filter box (2). The controller (11) is also electrically connected to the fan (6). The bottom of the base plate (1) is provided with casters (4) at the four corners. The bottom of the rear side of the filter box (2) is provided with an air outlet groove.

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