Waste water filtering mechanism for thermal power plant

Abstract

The present application provides a thermal power plant wastewater filtering mechanism, comprising a filter box, a filter screen plate, the filter screen plate is used for filtering treatment of the thermal power plant wastewater; a dynamic mixing assembly, the dynamic mixing assembly moves with the dosing assembly and rotates, the dynamic mixing assembly is used for stirring the liquid in the filter box; a cleaning mixing assembly, the cleaning mixing assembly is connected with the dynamic mixing assembly, the cleaning mixing assembly operates with the operation of the dynamic mixing assembly, the cleaning mixing assembly is used for further stirring the liquid on the filter screen plate and cleaning the filter screen plate simultaneously.The present application utilizes the filter screen plate to filter the thermal power plant wastewater, the dynamic mixing assembly and the cleaning mixing assembly can rotate with the movement of the dosing assembly, thereby stirring the liquid in the filter screen plate, so that the treatment reagent can fully contact with the thermal power plant wastewater, improving the treatment effect of the treatment reagent on the thermal power plant wastewater, and the movement of the cleaning mixing assembly can clean the filter screen plate, preventing the filter screen plate from being blocked and affecting the use.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment, and more particularly to a wastewater filtration mechanism for thermal power plants. Background Technology

[0002] A thermal power plant is a factory that uses coal, oil, or natural gas as fuel to produce electricity. Its basic production process involves burning fuel in a boiler to heat water and create steam, converting the chemical energy of the fuel into heat energy. The steam pressure drives a turbine, converting the heat energy into mechanical energy. The turbine then drives a generator, converting the mechanical energy into electrical energy. Modern power plants often employ programmable control to improve automation. Programmable control divides the numerous dispersed operations in the production process into several regular programs based on the technological flow of auxiliary equipment and the thermal system. Combined with protection and interlocking conditions, this allows operators to automatically control the system using a few switches and buttons. With the increasing application of computers, especially the development of microcomputers and microprocessors, modern thermal power plant automation has achieved a hierarchical integrated control method based on minicomputers, microcomputers, and microprocessors.

[0003] During the daily operation of thermal power plants, various types of wastewater are generated. These wastewaters mainly include acid and alkaline wastewater from the chemical water treatment workshop, ash flushing water from the electrostatic precipitator ash flushing system, slag flushing wastewater from the boiler room, periodic boiler discharge water, discharge water from the circulating water system, flushing water from the coal conveying system, oily wastewater from the oil depot, and domestic sewage from the plant area. The main pollutants in the wastewater are suspended solids, petroleum, and a small amount of organic matter. Direct discharge of thermal power plant wastewater causes significant environmental pollution, so it is necessary to treat the wastewater. During the wastewater treatment process, filters are needed to remove solid substances from the wastewater.

[0004] In the authorized Chinese utility model patent "Announcement No.: CN216963699U, Title: A Filtration Device for Wastewater Discharge from Thermal Power Plants", the rotating pipe drives the spiral blade to rotate, continuously propelling the wastewater in the drainage pipe forward to prevent wastewater sedimentation. Since the filter element needs frequent cleaning, and the existing filter element requires multiple screws for fastening, disassembly and assembly take a long time, affecting cleaning efficiency. At this time, the installation component can be extended and retracted by a spring, which facilitates the disassembly and assembly of the filter component and improves the disassembly and assembly speed. The above application uses the spiral blade to push the wastewater forward to prevent pipe blockage. However, the sediment in the wastewater easily clogs the filter screen. The above application solves the problem of clogged filter screen by replacing the filter element, which is cumbersome and requires stopping the machine for processing when replacing the filter element, thus affecting the wastewater filtration efficiency. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defect of the filter screen in the prior art that is easy to clog and thus affects the wastewater filtration efficiency, and to provide a wastewater filtration mechanism for thermal power plants.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] This invention provides a wastewater filtration mechanism for thermal power plants, including a filter housing.

[0008] A filter screen is installed on the inner wall of the filter box and is used to filter wastewater from thermal power plants.

[0009] A dosing mechanism is connected to the upper part of the filter box. The dosing mechanism is used to uniformly add chemicals into the filter box. The dosing mechanism includes a dosing component and a moving component. The dosing component is installed on the top of the filter box, and the moving component is located in the inner cavity of the filter box. The dosing component and the moving component are connected.

[0010] A dynamic mixing assembly is disposed in the inner cavity of the filter box and is connected to the dosing assembly. The dynamic mixing assembly moves and rotates with the dosing assembly and is used to stir the liquid inside the filter box.

[0011] A cleaning and mixing component is disposed above the filter screen plate and is connected to the dynamic mixing component. The cleaning and mixing component operates as the dynamic mixing component operates. The cleaning and mixing component is used to further stir the liquid on the filter screen plate and clean the filter screen plate at the same time.

[0012] In this technical solution, a filter screen can be used to filter wastewater from thermal power plants, and a dosing component can be used to mix treatment agents into the wastewater. This not only treats chemical substances such as sulfides and nitrates in the wastewater, but also dissolves some solid substances, thereby reducing the filtration pressure on the filter screen.

[0013] Meanwhile, the dynamic mixing component and the clean mixing component can rotate along with the movement of the dosing component, thereby stirring the liquid in the filter screen plate, so that the treatment agent can fully contact the wastewater of the thermal power plant and improve the treatment effect of the treatment agent on the wastewater of the thermal power plant.

[0014] Further cleaning and mixing of the components can clean the filter screen, preventing it from becoming clogged and affecting its use, and thus preventing any impact on the filtration efficiency of wastewater from thermal power plants.

[0015] Preferably, the dosing assembly includes a drug storage tank, a dosing pump is installed at the bottom of the drug storage tank, and a connecting pipe is connected to the output end of the dosing pump;

[0016] The end of the connecting pipe furthest from the pump is connected to the fixed pipe, which is located inside the filter box. Multiple spraying ends are connected to the bottom of the fixed pipe.

[0017] In this technical solution, the treatment agent can be added into the filter box using the dosing assembly.

[0018] Preferably, the bottom of the medicine storage box is connected to a plurality of support columns, and the top of the support columns is connected to the top of the filter box.

[0019] In this technical solution, the medicine storage box can be supported by support columns.

[0020] Preferably, the connecting pipe is composed of a flexible hose and a rigid pipe, which are connected to each other, and the flexible hose is connected to the output end of the pump.

[0021] The filter housing has a pre-set opening on its top surface, through which the rigid tube is slidably connected to the top surface of the filter housing.

[0022] In this technical solution, the pump and the stationary pipe can be connected using a connecting pipe.

[0023] Preferably, the moving component includes a power source, which is mounted on the outside of the filter housing;

[0024] The output end of the power source is connected to a threaded shaft, which is rotatably connected to the side of the filter box. The end of the threaded shaft away from the power source is rotatably connected to the inner wall of the filter box.

[0025] A movable plate is threadedly connected to the surface of the threaded shaft, and the bottom of the movable plate is connected to the top of the fixed tube.

[0026] In this technical solution, a movable dosing component is used to move the dosing component, thereby allowing the agent to be added evenly into the filter box.

[0027] Preferably, the inner wall of the filter box is connected to multiple fixed tracks, and the surface of the fixed tracks is slidably connected to the movable plate.

[0028] In this technical solution, the movement trajectory of the moving plate can be limited by using a fixed track.

[0029] Preferably, the hybrid assembly includes a rotating shaft, both ends of which are rotatably connected to the inner cavity sidewall of the filter box, and a plurality of stirring blades are connected to the surface of the rotating shaft;

[0030] Multiple follower blocks are rotatably connected to the surface of the rotating shaft. An upper connecting column is connected to the top of each follower block, and the top of the upper connecting column is connected to the bottom of the fixed tube.

[0031] In this technical solution, the dynamic mixing component can rotate as the dosing component moves, thereby mixing the liquid in the filter box.

[0032] Preferably, both ends of the rotating shaft are connected to movable gears, the sides of the movable gears are meshed with fixed racks, and the fixed racks are connected to the inner wall of the filter box cavity.

[0033] In this technical solution, a moving gear and a fixed rack are used to make the rotating shaft rotate as the fixed tube moves.

[0034] Preferably, the cleaning and mixing assembly includes a rotating shaft, and the top surface of the filter screen is rotatably connected to multiple rotating shafts;

[0035] Multiple mixing blades are connected to the surface of the rotating shaft, and a cleaning brush is connected to the bottom of the mixing blades. The bottom side of the cleaning brush contacts the top surface of the filter screen.

[0036] A rotating gear is connected to the top of the rotating shaft, and a movable rack is meshed with the side of the rotating gear. The top of the movable rack is connected to the bottom of the mounting plate.

[0037] The top of the mounting plate is connected to multiple lower connecting posts, and the top of each lower connecting post is connected to the bottom of the follower block.

[0038] In this technical solution, the cleaning and mixing component can rotate along with the moving mixing component. The rotating cleaning and mixing component can not only further agitate the liquid in the filter box, but also clean the filter screen, preventing the filter screen from being blocked and affecting the filtration efficiency of the thermal power plant wastewater.

[0039] Preferably, a fixing column is connected to the inner cavity side wall of the filter box, and the surface of the fixing column is slidably connected to the mounting plate.

[0040] In this technical solution, the movement trajectory of the mounting plate can be limited by using a fixed column.

[0041] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0042] The positive and progressive effects of this invention are as follows:

[0043] This invention utilizes a filter screen to filter wastewater from thermal power plants and a dosing assembly to mix treatment agents into the wastewater. This not only treats chemical substances such as sulfides and nitrates in the wastewater, but also dissolves some solid substances, thereby reducing the filtration pressure on the filter screen.

[0044] Meanwhile, the dynamic mixing component and the clean mixing component can rotate along with the movement of the dosing component, thereby stirring the liquid in the filter screen plate, so that the treatment agent can fully contact the wastewater of the thermal power plant and improve the treatment effect of the treatment agent on the wastewater of the thermal power plant.

[0045] Further cleaning and mixing of the components can clean the filter screen, preventing it from becoming clogged and affecting its use, and thus preventing any impact on the filtration efficiency of wastewater from thermal power plants. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the structure of a wastewater filtration mechanism for thermal power plants according to an embodiment of the present invention.

[0047] Figure 2 for Figure 1 The diagram shows the overall internal structure of a wastewater filtration system in a thermal power plant.

[0048] Figure 3 for Figure 1 The diagram shows the overall side view of the wastewater filtration mechanism in a thermal power plant.

[0049] Figure 4 for Figure 1 The diagram shows the connection structure between the rotating shaft, mixing blades, cleaning brush, rotating gear, moving rack, and mounting plate of the wastewater filtration mechanism for thermal power plants.

[0050] Figure 5 for Figure 1 The diagram shows the connection structure between the dynamic mixing component and the lower connecting column of the wastewater filtration mechanism in a thermal power plant.

[0051] Figure 6 for Figure 2 The diagram shows a partially enlarged view of point A of the wastewater filtration mechanism in a thermal power plant.

[0052] Explanation of reference numerals in the attached figures

[0053] 1. Filter housing;

[0054] 2. Filter screen;

[0055] 3. Dosing assembly; 31. Drug storage tank; 32. Dosing pump; 33. Connecting pipe; 34. Fixing pipe; 35. Spraying end; 36. Support column;

[0056] 4. Moving components; 41. Power source; 42. Threaded shaft; 43. Moving plate; 44. Fixed track;

[0057] 5. Hybrid assembly; 51. Rotating shaft; 52. Stirring blade; 53. Follower block; 54. Upper connecting column; 55. Moving gear; 56. Fixed rack;

[0058] 6. Cleaning and mixing assembly; 61. Rotating shaft; 62. Mixing blade; 63. Cleaning brush; 64. Rotating gear; 65. Moving rack; 67. Lower connecting post; 68. Fixed post. Detailed Implementation

[0059] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0060] Figures 1 to 6 The diagram shown is a structural schematic of an embodiment of the wastewater filtration mechanism for thermal power plants according to the present invention. The wastewater filtration mechanism for thermal power plants includes a filter housing 1, and liquid inlet and outlet ports are installed on the side of the filter housing 1;

[0061] Filter screen 2, the filter screen 2 is installed on the inner wall of the filter box 1, and the filter screen 2 is used to filter wastewater from thermal power plants.

[0062] A dosing mechanism is connected to the upper part of the filter box 1. The dosing mechanism is used to uniformly add chemicals into the filter box 1. The dosing mechanism includes a dosing component 3 and a moving component 4. The dosing component 3 is installed on the top of the filter box 1, and the moving component 4 is disposed in the inner cavity of the filter box 1. The dosing component 3 and the moving component 4 are connected.

[0063] The dynamic mixing component 5 is disposed in the inner cavity of the filter box 1 and is connected to the dosing component 3. The dynamic mixing component 5 moves and rotates with the dosing component 3 and is used to stir the liquid in the filter box 1.

[0064] The cleaning and mixing component 6 is disposed above the filter screen plate 2. The cleaning and mixing component 6 is connected to the dynamic mixing component 5. The cleaning and mixing component 6 operates as the dynamic mixing component 5 operates. The cleaning and mixing component 6 is used to further stir the liquid on the filter screen plate 2 and clean the filter screen plate 2 at the same time.

[0065] In this technical solution, the filter screen 2 can be used to filter the wastewater from the thermal power plant, and the dosing component 3 can be used to mix the treatment agent into the wastewater. This not only treats the chemical substances such as sulfides and nitrates in the wastewater, but also dissolves some solid substances, thereby reducing the filtration pressure on the filter screen 2.

[0066] Meanwhile, the dynamic mixing component 5 and the cleaning mixing component 6 can rotate as the dosing component 3 moves, thereby stirring the liquid in the filter screen plate 2, so that the treatment agent can fully contact the wastewater of the thermal power plant and improve the treatment effect of the treatment agent on the wastewater of the thermal power plant.

[0067] Further movement of the cleaning assembly 6 can clean the filter screen 2, preventing it from becoming clogged and affecting its use, and thus preventing any impact on the filtration efficiency of the thermal power plant wastewater.

[0068] The dosing assembly 3 includes a drug storage tank 31, a dosing pump 32 is installed at the bottom of the drug storage tank 31, and a connecting pipe 33 is connected to the output end of the dosing pump 32.

[0069] The end of the connecting pipe 33 away from the pump 32 is connected to the fixed pipe 34. The fixed pipe 34 is located in the inner cavity of the filter box 1, and multiple spraying ends 35 are connected to the bottom of the fixed pipe 34.

[0070] In this technical solution, the dosing component 3 can be used to add treatment agents into the filter box 1.

[0071] The bottom of the medicine storage box 31 is connected to a plurality of support columns 36, and the top of the support columns 36 is connected to the top of the filter box 1.

[0072] In this technical solution, the medicine storage box 31 can be supported by the support column 36.

[0073] The connecting pipe 33 is composed of a flexible tube and a rigid tube, which are connected to each other. The flexible tube is connected to the output end of the feed pump 32.

[0074] The filter housing 1 has a preset opening on its top surface, and the rigid tube is slidably connected to the top surface of the filter housing 1 through the preset opening.

[0075] In this technical solution, the pump 32 and the fixed pipe 34 can be connected by the connecting pipe 33.

[0076] When filtering wastewater from thermal power plants, the treatment agent in the storage tank 31 is pumped into the connecting pipe 33 and the fixed pipe 34 by the injection pump 32, and then the treatment agent is sprayed into the filter box 1 by the spraying end 35. The treatment agent is used to perform preliminary treatment on the wastewater from thermal power plants.

[0077] Then, the wastewater from the thermal power plant can be filtered using the filter screen 2.

[0078] The mobile component 4 includes a power source 41, which is installed on the outside of the filter housing 1.

[0079] The output end of the power source 41 is connected to a threaded shaft 42, which is rotatably connected to the side of the filter box 1. The end of the threaded shaft 42 away from the power source 41 is rotatably connected to the inner wall of the filter box 1.

[0080] The threaded shaft 42 is threadedly connected to a movable plate 43, and the bottom of the movable plate 43 is connected to the top of the fixed tube 34.

[0081] In this technical solution, the movable component 4 can move the dosing component 3, thereby allowing the agent to be added evenly into the filter box 1.

[0082] The inner wall of the filter box 1 is connected to multiple fixed tracks 44, and the surface of the fixed tracks 44 is slidably connected to the movable plate 43.

[0083] In this technical solution, the movement trajectory of the moving plate 43 can be limited by using the fixed track 44.

[0084] When adding the treatment agent into the filter box 1, the power source 41 drives the threaded shaft 42 to rotate, thereby driving the moving plate 43 to move along the fixed track 44. At this time, the fixed pipe 34 and the spraying end 35 can move in the same direction, so that the fixed pipe 34 can evenly add the treatment agent into the filter box 1.

[0085] The hybrid assembly 5 includes a rotating shaft 51, with both ends of the rotating shaft 51 rotatably connected to the inner wall of the filter box 1, and a plurality of stirring blades 52 connected to the surface of the rotating shaft 51.

[0086] Multiple follower blocks 53 are rotatably connected to the surface of the rotating shaft 51. The top of each follower block 53 is connected to an upper connecting post 54, and the top of the upper connecting post 54 is connected to the bottom of the fixed tube 34.

[0087] In this technical solution, the dynamic mixing component 5 can rotate as the dosing component 3 moves, thereby mixing the liquid in the filter box 1.

[0088] Both ends of the rotating shaft 51 are connected to movable gears 55. The side of the movable gears 55 is meshed with a fixed rack 56. The fixed rack 56 is connected to the inner wall of the filter box 1.

[0089] In this technical solution, the rotating shaft 51 can rotate as the fixed tube 34 moves by using the moving gear 55 and the fixed rack 56.

[0090] When the fixed pipe 34 moves, it can drive the upper connecting column 54 to move in the same direction, thereby driving the follower block 53 and the rotating shaft 51 to move in the same direction. When the rotating shaft 51 moves, it can drive the moving gear 55 to move in the same direction. At this time, under the action of the fixed rack 56, the moving gear 55 can rotate while moving, thereby driving the rotating shaft 51 to rotate, and then driving the stirring blade 52 to rotate. The stirring blade 52 can be used to stir the liquid in the filter box 1 in the vertical direction, so that the treatment agent can fully contact the wastewater of the thermal power plant.

[0091] The cleaning and mixing assembly 6 includes a rotating shaft 61, and the top surface of the filter screen 2 is rotatably connected to multiple rotating shafts 61;

[0092] The rotating shaft 61 is connected to a plurality of mixing blades 62, and the bottom of the mixing blades 62 is connected to a cleaning brush 63, the bottom side of the cleaning brush 63 being in contact with the top surface of the filter screen 2;

[0093] The top end of the rotating shaft 61 is connected to a rotating gear 64, and the side of the rotating gear 64 is meshed with a movable rack 65. The top of the movable rack 65 is connected to the bottom of the mounting plate.

[0094] The top of the mounting plate is connected to a plurality of lower connecting posts 67, and the top of the lower connecting posts 67 is connected to the bottom of the follower block 53.

[0095] In this technical solution, the cleaning and mixing component 6 can rotate along with the moving mixing component 5. The rotating cleaning and mixing component 6 can not only further stir the liquid in the filter box 1, but also clean the filter screen 2, preventing the filter screen 2 from being blocked and affecting the filtration efficiency of the thermal power plant wastewater.

[0096] The inner wall of the filter box 1 is connected to a fixing column 68, and the surface of the fixing column 68 is slidably connected to the mounting plate.

[0097] In this technical solution, the movement trajectory of the mounting plate can be limited by using the fixed column 68.

[0098] When the follower block 53 moves, it can drive the lower connecting column 67 to move in the same direction, thereby driving the mounting plate to move in the same direction along the fixed column 68. At this time, it can drive the moving rack 65 to move in the same direction. When the moving rack 65 moves, it can drive the rotating gear 64 to rotate, thereby driving the rotating shaft 61 to rotate, and then driving the mixing blade 62 and the cleaning brush 63 to rotate.

[0099] When the mixing blade 62 rotates, it can stir the liquid in the filter box 1 in the horizontal direction. The rotation direction of the mixing blade 62 is opposite to that of the stirring blade 52, thereby improving the mixing efficiency of the liquid in the filter box 1.

[0100] The cleaning brush 63 can clean the filter screen 2 when it rotates, preventing the filter screen 2 from being clogged and affecting its use.

[0101] The power source 41 is an electric motor or other device that can output rotational kinetic energy.

[0102] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A wastewater filtration mechanism for thermal power plants, comprising a filter housing (1), characterized in that, The wastewater filtration mechanism of the thermal power plant also includes: a filter screen (2), which is installed on the inner wall of the filter box (1) and is used to filter the wastewater of the thermal power plant. A dosing mechanism is connected to the upper part of the filter box (1). The dosing mechanism is used to uniformly add chemicals into the filter box (1). The dosing mechanism includes a dosing component (3) and a moving component (4). The dosing component (3) is installed on the top of the filter box (1), and the moving component (4) is located in the inner cavity of the filter box (1). The dosing component (3) and the moving component (4) are connected. The dynamic mixing component (5) is located in the inner cavity of the filter box (1) and is connected to the dosing component (3). The dynamic mixing component (5) moves and rotates with the dosing component (3). The dynamic mixing component (5) is used to stir the liquid in the filter box (1). The cleaning and mixing component (6) is disposed above the filter screen plate (2). The cleaning and mixing component (6) is connected to the dynamic mixing component (5). The cleaning and mixing component (6) operates with the dynamic mixing component (5). The cleaning and mixing component (6) is used to further stir the liquid on the filter screen plate (2) and clean the filter screen plate (2) at the same time. The moving component (4) includes a power source (41) which is installed on the outside of the filter housing (1); The output end of the power source (41) is connected to a threaded shaft (42), which is rotatably connected to the side of the filter box (1). The end of the threaded shaft (42) away from the power source (41) is rotatably connected to the inner wall of the filter box (1). The threaded shaft (42) has a movable plate (43) threadedly connected to its surface, and the bottom of the movable plate (43) is connected to the top of the fixed tube (34). The hybrid assembly (5) includes a rotating shaft (51), the two ends of which are rotatably connected to the inner wall of the filter box (1), and a plurality of stirring blades (52) are connected to the surface of the rotating shaft (51). The rotating shaft (51) has multiple follower blocks (53) rotatably connected to its surface. The top of each follower block (53) is connected to an upper connecting column (54), and the top of the upper connecting column (54) is connected to the bottom of the fixed tube (34). The cleaning and mixing assembly (6) includes a rotating shaft (61), and the top surface of the filter screen (2) is rotatably connected to multiple rotating shafts (61). The rotating shaft (61) has multiple mixing blades (62) connected to its surface. The bottom of the mixing blades (62) is connected to a cleaning brush (63). The bottom side of the cleaning brush (63) is in contact with the top surface of the filter screen (2). The top of the rotating shaft (61) is connected to a rotating gear (64), and a movable rack (65) is meshed with the side of the rotating gear (64). The top of the movable rack (65) is connected to the bottom of the mounting plate. The top of the mounting plate is connected to a plurality of lower connecting posts (67), and the top of the lower connecting posts (67) is connected to the bottom of the follower block (53).

2. The wastewater filtration mechanism for thermal power plants as described in claim 1, characterized in that: The dosing assembly (3) includes a drug storage tank (31), and a dosing pump (32) is installed at the bottom of the drug storage tank (31). The output end of the dosing pump (32) is connected to a connecting pipe (33). The end of the connecting pipe (33) away from the pump (32) is connected to the fixed pipe (34), which is located in the inner cavity of the filter box (1). The bottom of the fixed pipe (34) is connected to multiple spraying ends (35).

3. The wastewater filtration mechanism for thermal power plants as described in claim 2, characterized in that: The bottom of the medicine storage box (31) is connected to multiple support columns (36), and the bottom end of the support columns (36) is connected to the top of the filter box (1).

4. The wastewater filtration mechanism for thermal power plants as described in claim 2, characterized in that: The connecting pipe (33) is composed of a flexible tube and a rigid tube, which are connected to each other. The flexible tube is connected to the output end of the feed pump (32). The filter box (1) has a preset opening on its top surface, and the rigid tube is slidably connected to the top surface of the filter box (1) through the preset opening.

5. The wastewater filtration mechanism for thermal power plants as described in claim 1, characterized in that: The inner wall of the filter box (1) is connected to multiple fixed tracks (44), and the surface of the fixed tracks (44) is slidably connected to the movable plate (43).

6. The wastewater filtration mechanism for thermal power plants as described in claim 1, characterized in that: Both ends of the rotating shaft (51) are connected to movable gears (55), the side of the movable gears (55) meshes with the fixed rack (56), and the fixed rack (56) is connected to the inner wall of the filter box (1).

7. The wastewater filtration mechanism for thermal power plants as described in claim 1, characterized in that: The inner wall of the filter box (1) is connected to a fixing column (68), and the surface of the fixing column (68) is slidably connected to the mounting plate.

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