A high-efficiency fuel screening device for a thermal power plant

Abstract

The utility model relates to fuel screening technical field, specifically disclose a kind of thermal power plant fuel efficient screening device, including screening shell, the surface of screening shell is inlaid and is provided with feed inlet, and the inner wall of screening shell is symmetrically equipped with cloth board;The surface of screening shell is equipped with motor one, and the surface of screening shell is equipped with motor two, and the surface of screening shell is equipped with speed reducer, the output shaft of motor two is connected with the output shaft of speed reducer, the surface of screening shell is symmetrically equipped with frame, and screening shell inside is continuously provided with screen shaft.The thermal power plant fuel efficient screening device is provided with screen bar, screen cloth and cloth board, when fuel falls on the surface of cloth board, fuel falls along the surface of cloth board, so that fuel is evenly dispersed to screen surface, at the same time, material guiding screw guides fuel on the surface of screen cloth, so that fuel is more evenly distributed, prevent fuel from accumulating on screen surface, improve the practicability of device.

Description

Technical Field

[0001] This utility model relates to the field of fuel screening technology, specifically a high-efficiency fuel screening device for thermal power plants. Background Technology

[0002] Thermal power plants are factories that convert the heat energy generated during fuel combustion into electrical energy. Their core function is to convert primary energy sources such as coal and natural gas into secondary energy sources that can be transmitted and used, such as electricity, through a series of energy conversion processes. They are an important part of the power system. Thermal power plant fuel refers to various substances that release heat energy through combustion to drive the generator units during thermal power generation. It is the core foundation for thermal power plants to achieve energy conversion. The essence of thermal power plant fuel is to convert the chemical energy of fuel into heat energy through combustion reaction, and then into electrical energy through thermodynamic cycle. In thermal power generation, coal with appropriate particle size can ensure stable and efficient combustion in the boiler, which helps to improve combustion efficiency, reduce incomplete combustion losses, and thus improve the overall energy utilization efficiency of the power plant, reduce pollutant emissions, and reduce operating costs. Therefore, fuel screening is necessary. However, existing screening devices cannot screen fuel quickly, which easily leads to fuel accumulation on the surface of the screen and cannot be spread out. Utility Model Content

[0003] The purpose of this invention is to provide a high-efficiency fuel screening device for thermal power plants, in order to solve the problem mentioned in the background art that the fuel cannot be screened quickly, which easily leads to the accumulation of fuel on the surface of the screen and the inability to spread it out.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency fuel screening device for thermal power plants, comprising a screening shell, wherein a feed inlet is embedded in the surface of the screening shell, and a material distribution plate is symmetrically installed on the inner wall of the screening shell;

[0005] Motor 1 and Motor 2 are mounted on the surface of the screening housing, and a reducer is also mounted on the surface of the screening housing. The output shaft of Motor 2 is connected to the output shaft of the reducer. A machine base is symmetrically mounted on the surface of the screening housing, and a screen shaft is continuously arranged inside the screening housing. Both ends of the screen shaft pass through the screening housing and are connected to the machine base. Gears are sleeved on the surface of the screen shaft, a guide screw is installed inside the screen shaft, and screen bars are installed around the surface of the screen shaft. A screen mesh is installed on the inner wall of the screening housing, and a discharge port 1 and a discharge port 2 are provided on one side of the screen mesh. An inspection port is provided on the surface of the screening housing.

[0006] Preferably, the cut surface of the fabric plate is set as an inclined plane, and the two fabric plates are set as a V-shaped structure.

[0007] Using the above technical solution, the fuel is guided by the material distribution plate, so that the fuel falls evenly on the surface of the screen.

[0008] Preferably, the material plate is disposed at the bottom of the feed inlet, and the material plate is positioned corresponding to the screen shaft.

[0009] Using the above technical solution, the material is thrown into the screening shell through the feed port, and at this time the fuel falls on the surface of the material distribution plate.

[0010] Preferably, the sieve shaft and the sieve housing are rotatably connected, and the sieve mesh is located at the bottom of the sieve shaft.

[0011] Using the above technical solution, the motor drives the screen shaft to rotate through the reducer, so that the screen shaft rotates inside the screening shell.

[0012] Preferably, all surfaces of the screen shafts are connected to gears, and the gears on adjacent screen shaft surfaces are meshed.

[0013] Using the above technical solution, adjacent screen shafts rotate through the meshing of gears, causing the screen shafts to drive the surface screen bars to rotate.

[0014] Preferably, the first discharge port is located at the top of the screen, and the second discharge port is located at the bottom of the screen.

[0015] Using the above technical solution, discharge port one can remove fuel with a larger diameter on the screen surface, and discharge port two can remove fuel from the bottom of the screen.

[0016] Preferably, the inspection port is located on the top surface of the screening housing, and the screening housing has an opening. The opening of the screening housing is positioned corresponding to the inspection port, and the inspection port is positioned corresponding to the screen shaft dimension.

[0017] By adopting the above technical solution, the top of the screening shell can be opened through the inspection port, which facilitates the inspection and maintenance of the inside of the screening shell.

[0018] Compared with the prior art, the beneficial effects of this utility model are: This high-efficiency fuel screening device for thermal power plants:

[0019] 1. The device is equipped with screen bars, screen mesh and distribution plate. When fuel falls on the surface of the distribution plate, the fuel falls along the surface of the distribution plate and is evenly distributed on the screen surface. At the same time, the guide screw guides the fuel on the surface of the screen mesh, making the fuel distribution more uniform and preventing fuel from accumulating on the screen surface, thus improving the practicality of the device.

[0020] 2. The motor drives the screen bar and screen shaft to rotate, which in turn drives the screen bar surface to rotate. When the fuel falls through the cloth plate, it first lands on the surface of the screen shaft, causing the screen shaft and screen bar to crush the fuel. Then the fuel lands on the screen surface, which can improve screening efficiency and accuracy, and improve production efficiency. Attached Figure Description

[0021] Figure 1 This is a front view structural diagram of the present invention;

[0022] Figure 2 This is a side view of the sieve shaft structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the left-side structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the left side of the fabric plate structure of this utility model;

[0025] Figure 5 This is a top view of the structure of this utility model.

[0026] In the diagram: 10. Screening shell;

[0027] 20. Feed inlet; 201. Fabric plate;

[0028] 30. Motor 1;

[0029] 40. Motor II; 401. Reducer; 402. Gear; 403. Machine base; 404. Guide screw; 405. Screen shaft; 406. Screen bar; 407. Screen mesh;

[0030] 50. Discharge port one; 501. Discharge port two;

[0031] 60. Inspection port. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figure 1-5This utility model provides a technical solution: a high-efficiency fuel screening device for thermal power plants, including a screening shell 10, a feed inlet 20, a material distribution plate 201, a first motor 30, a second motor 40, a reducer 401, a gear 402, a base 403, a guide screw 404, a screen shaft 405, screen bars 406, a screen mesh 407, a first discharge outlet 50, a second discharge outlet 501, and an inspection port 60;

[0034] This high-efficiency fuel screening device for thermal power plants can improve fuel screening efficiency. The specific implementation method is as follows:

[0035] A feed inlet 20 is embedded in the surface of the screening housing 10, and a feeding plate 201 is symmetrically installed on the inner wall of the screening housing 10. A motor 30 and a motor 40 are installed on the surface of the screening housing 10, and a reducer 401 is installed on the surface of the screening housing 10. The output shaft of the motor 40 is connected to the output shaft of the reducer 401. A machine base 403 is symmetrically installed on the surface of the screening housing 10, and a screen shaft 405 is continuously arranged inside the screening housing 10. Both ends of the screen shaft 405 pass through the screening housing 10 and are connected to the machine base 403. Gears 402 are sleeved on the surface of the screen shaft 405, a guide screw 404 is installed inside the screen shaft 405, and screen bars 406 are installed around the surface of the screen shaft 405. A screen 407 is installed on the inner wall of the screening housing 10, and a discharge port 50 is provided on one side of the screen 407. The second part of the screen housing 10 has an inspection port 60 on its surface. The cross-section of the material distribution plate 201 is set as an inclined plane, and the two material distribution plates 201 are set as a V-shaped structure. The material distribution plates 201 are set at the bottom of the feed inlet 20, and the positions of the material distribution plates 201 and the screen shaft 405 are corresponding. The screen shaft 405 and the screen housing 10 are rotatably connected. The screen mesh 407 is set at the bottom of the screen shaft 405. The surface of the screen shaft 405 is connected with gears 402, and the gears 402 on the surfaces of adjacent screen shafts 405 are meshed. The first discharge port 50 is set at the screen mesh 407, and the second discharge port 501 is set at the bottom of the screen mesh 407. The inspection port 60 is set on the top surface of the screen housing 10, and the screen housing 10 has an opening. The opening of the screen housing 10 is set at the position of the inspection port 60, and the inspection port 60 is set at the position of the screen shaft 405.

[0036] Fuel is fed into the screening housing 10 through the feed inlet 20. The fuel lands on the surface of the distribution plate 201. Because the distribution plate 201 has an inclined plane, the fuel slides off its surface under gravity and lands on the screen shaft 405. At this point, the second motor 40 is started, transmitting power to the reducer 401. The reducer 401 drives the screen shaft 405 and the guide screw 404 to rotate, causing the screen shaft 405 to rotate inside the screening housing 10. This rotation drives the surface gears 402 to rotate. Because adjacent gears 402 mesh, multiple screen shafts 405 rotate simultaneously, driving the surface screen bars 406 to rotate. The adjacent screen bars 406 crush larger fuel particles. Fuel particles that meet the required size are passed through two adjacent screen shafts 405 and fall onto the surface of the screen mesh 407. The screen mesh 407 filters the fuel, with larger diameter fuel falling onto the surface of the screen mesh 407, while fuel of the required diameter falls through the mesh of the screen mesh 407 and onto the surface of the bottom drive belt. The drive belt moves, causing the fuel of the required diameter to move to the discharge port 2 501, where it is discharged. Larger diameter fuel is discharged through the discharge port 1 50. At the same time, the inspection port 60 can be removed to inspect the inside of the screening housing 10 through the opening.

[0037] Working principle: When using this high-efficiency fuel screening device for thermal power plants, a guide screw 404, a screen shaft 405, a screen bar 406, and a screen mesh 407 are set up, which can improve the fuel screening efficiency and increase the overall practicality.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency screening device for fuel in a thermal power plant, comprising a screening shell (10), wherein a feed inlet (20) is embedded in the surface of the screening shell (10), and a feeding plate (201) is symmetrically installed on the inner wall of the screening shell (10). Its features are: Motor 1 (30) is mounted on the surface of the screening housing (10), and motor 2 (40) is mounted on the surface of the screening housing (10). A reducer (401) is also mounted on the surface of the screening housing (10). The output shaft of motor 2 (40) is connected to the output shaft of reducer (401). A base (403) is symmetrically mounted on the surface of the screening housing (10). A screen shaft (405) is continuously arranged inside the screening housing (10), and both ends of the screen shaft (405) penetrate the screening housing (10). 0) Connected to the base (403), the screen shaft (405) is fitted with a gear (402), the screen shaft (405) is fitted with a guide screw (404), and the screen shaft (405) is fitted with screen bars (406) around its surface. The inner wall of the screening housing (10) is fitted with a screen (407), and one side surface of the screen (407) is provided with a discharge port one (50) and a discharge port two (501). The surface of the screening housing (10) is provided with an inspection port (60).

2. The high-efficiency fuel screening device for thermal power plants according to claim 1, characterized in that: The cut surface of the fabric plate (201) is set as an inclined plane, and the two fabric plates (201) are set as a V-shaped structure.

3. The high-efficiency fuel screening device for thermal power plants according to claim 1, characterized in that: The material distribution plate (201) is located at the bottom of the feed inlet (20), and the material distribution plate (201) is positioned in correspondence with the screen shaft (405).

4. The high-efficiency fuel screening device for thermal power plants according to claim 1, characterized in that: The sieve shaft (405) is rotatably connected to the sieve housing (10), and the sieve screen (407) is located at the bottom of the sieve shaft (405).

5. The high-efficiency fuel screening device for thermal power plants according to claim 1, characterized in that: The surfaces of the screen shafts (405) are all connected to gears (402), and the gears (402) on the surfaces of adjacent screen shafts (405) are meshed.

6. The high-efficiency fuel screening device for thermal power plants according to claim 1, characterized in that: The first discharge port (50) is located at the screen (407), and the second discharge port (501) is located at the bottom of the screen (407).

7. The high-efficiency fuel screening device for thermal power plants according to claim 1, characterized in that: The inspection port (60) is provided on the top surface of the screening housing (10), and the screening housing (10) is provided with an opening. The opening of the screening housing (10) is provided in a position corresponding to the inspection port (60), and the inspection port (60) is provided in a position corresponding to the screen shaft (405).

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