Trash screen for sewage treatment in hydropower station and trash screen method thereof

Abstract

The present invention discloses a trash screen for sewage treatment in a hydropower station and a trash screen method thereof, comprising a trash screen outer frame, wherein the two ends of the trash screen outer frame are respectively fixedly connected with a water inlet and a drain outlet, and the two groups of filter components of the trash screen outer frame for filtering impurities, wherein the two groups of filter components are arranged in parallel inside the trash screen outer frame, and the filter components comprise two side plates, wherein the two side plates are respectively fixedly connected to the two sides of the trash screen outer frame. The present invention can not only filter impurities by setting a first grid plate and a second grid plate, and collect them inside a collection box, thereby ensuring filtering efficiency, but also can switch the two groups of filter components by setting a driving component, without manual cleaning, thereby improving work efficiency, and can also flip the first grid plate and the second grid plate to both sides when the filter component is lifted, thereby helping to discharge internal impurities, thereby greatly reducing the workload of workers.

Description

Technical Field

[0001] The invention relates to the technical field of trash screens, and in particular to a trash screen for sewage treatment in a hydropower station and a trash blocking method thereof. Background Art

[0002] A hydropower station is a comprehensive engineering facility that converts water energy into electrical energy. It is generally installed in a river and generates electricity by driving a water wheel through the movement of water flow. In this process, various impurities such as garbage and algae often appear in the water, which can cause the water wheel to be unable to move and thus damage the entire hydropower station. Therefore, anti-fouling grilles are sometimes installed at the water inlet of the hydropower station to intercept impurities in the water. However, the existing grilles still have the following defects when used:

[0003] As the amount of water inflow increases, dirt easily clogs the grille, and the device needs to be stopped after a period of time. After the workers clean the grille, they restart the device to treat the sewage, which increases the workload of the workers and greatly reduces work efficiency, making it inconvenient to use.

[0004] In order to improve the interception effect of the grille, staggered holes are usually used to block impurities, but impurities are easily stuck in the staggered holes, and then in the subsequent cleaning process, a lot of time is needed, and the grille cleaning is difficult;

[0005] Therefore, those skilled in the art provide a trash screen for sewage treatment in a hydropower station and a trash blocking method thereof to solve the problems raised in the above-mentioned background technology. Summary of the invention

[0006] The purpose of the present invention is to solve the problem that when the grille is in use, dirt is easily blocked by the grille, and the device needs to be stopped after a period of time. After the workers clean the grille, they restart the device to treat sewage, which increases the workload of the workers and greatly reduces the work efficiency. Impurities are easily stuck in the staggered holes, and a lot of time is needed in the subsequent cleaning process. The grille is difficult to clean. A trash grille for sewage treatment in a hydropower station and a trash interception method thereof are proposed.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A trash screen for sewage treatment in a hydropower station, comprising a trash screen outer frame, two ends of which are respectively fixedly connected with a water inlet and a drain, and two groups of filter components of the trash screen outer frame for filtering impurities, the two groups of filter components are arranged in parallel inside the trash screen outer frame;

[0009] The filter assembly includes two side plates, the two side plates are fixedly connected to the two sides of the dirt-blocking outer frame respectively, and also includes a first grid plate and a second grid plate, the first grid plate and the second grid plate are both arranged inside the dirt-blocking outer frame, a plurality of first grid holes are opened inside the first grid plate, a plurality of second grid holes are opened inside the second grid plate, an L-shaped plate is fixedly connected to the bottom of the first grid plate, and a collecting assembly for collecting impurities is arranged on one side of the L-shaped plate and the second grid plate;

[0010] A flip assembly for controlling the flipping of the first grid plate and the second grid plate is provided on one side of the side plate;

[0011] Two symmetrically arranged fixed blocks are fixedly connected to both sides of the dirt-blocking outer frame, the two fixed blocks are located between the two side plates, and the tops of the two fixed blocks on the same side are provided with the same set of driving components, which are used to switch between the two sets of filtering components.

[0012] As a further solution of the present invention, the collecting assembly includes two collecting boxes fixedly connected to the L-shaped plate and one side of the second grid plate respectively, the top of the collecting box is provided with a plurality of sieve holes, one side of the collecting box is provided with a discharge port, the bottom and both sides of the collecting box are provided with a plurality of filter holes, and the bottom inner wall of the collecting box is provided with an inclined groove.

[0013] As a further solution of the present invention, the flip assembly includes a slide groove opened on one side of the side panel, a slider is slidably connected inside the slide groove, a rectangular plate is fixedly connected to one side of the slider, a first rotating shaft is rotatably connected to one side of the rectangular plate, a gear and a connecting plate are fixedly sleeved on the outer wall of the first rotating shaft, a first connecting block is fixedly connected to the top of the connecting plate, and the two first connecting blocks are respectively fixedly connected to the top of one side of the first grille plate and the second grille plate.

[0014] As a further solution of the present invention, a vertical groove is provided on one side of the connecting plate, and two symmetrically arranged fixing rods are fixedly connected to one side of the dirt-blocking outer frame, and one end of the two fixing rods is fixedly connected to the same strip plate, and the strip plate is slidably connected to the vertical groove, and a second L-shaped rod is fixedly connected to the top of one side of the side plate, and one end of the second L-shaped rod is fixedly connected to a rack meshing with the gear.

[0015] As a further solution of the present invention, the driving assembly includes a same horizontal plate fixedly connected to the top of the fixed block, both ends of the horizontal plate are fixedly connected with inclined plates, an inclined hole is opened inside the inclined plate, and a horizontal hole is opened inside the horizontal plate, and the inclined holes are respectively connected to the two ends of the horizontal hole.

[0016] As a further solution of the present invention, one side of the dirt-blocking outer frame is slidably connected to a vertical plate, the back of one of the side plates is fixedly connected to an electric push rod, the piston rod of the electric push rod is fixedly connected to one side of the vertical plate, a vertical hole is opened inside the vertical plate, a second connecting block is slidably connected inside the vertical hole, and the top of the second connecting block is fixedly connected to the top inner wall of the vertical plate with the same tension spring.

[0017] As a further solution of the present invention, one side of the second connecting block is fixedly connected to a connecting round rod, and the connecting round rod is used in conjunction with the transverse hole and the inclined hole, one end of the inclined hole is fixedly connected to a connecting rod, one end of the connecting rod is fixedly connected to a push plate, one side of the rectangular plate is fixedly connected to a first L-shaped rod, and the push plate is located at the bottom of the two first L-shaped rods and is used in conjunction with the first L-shaped rods.

[0018] As a further solution of the present invention, the first grille holes and the second grille holes are arranged vertically.

[0019] A method for intercepting wastewater using a trash screen for sewage treatment in a hydropower station, comprising the following steps:

[0020] S1. Sewage enters from the water inlet, is filtered by the filter assembly, and is discharged through the drain outlet;

[0021] S2, switch the two filter components through the driving component and use them alternately to avoid clogging of the device;

[0022] S3. The first grid plate and the second grid plate can be turned over by the turning assembly to pour out the impurities inside.

[0023] The beneficial effects of the present invention are:

[0024] 1. By setting the first grid plate and the second grid plate, we have built an efficient impurity filtration system. The two sets of grid plates work together ingeniously to effectively filter impurities in the fluid and collect them in a special collection box. This design not only ensures the filtration efficiency, but also greatly simplifies the subsequent impurity cleaning work.

[0025] It is worth noting that multiple first grille holes and second grille holes are carefully arranged on the first grille plate and the second grille plate respectively. The design of these grille holes is not random but well thought out. They are all set in strips. This design shows great advantages in the subsequent cleaning of internal impurities. Due to the design of the strip grille holes, impurities are more easily guided to the outside during the cleaning process instead of being blocked in the holes, which greatly reduces the difficulty of subsequent cleaning and makes maintenance work easier and more efficient.

[0026] In addition, the design of the strip grille holes also helps to improve the filtration efficiency. Compared with grille holes of other shapes, the two strip holes are arranged vertically. The design of the two vertically arranged strip holes can provide a larger filtration area, thereby increasing the contact opportunity between the fluid and the grille plate, making it more likely that impurities will be captured. This design not only improves the filtration effect, but also extends the service life of the filter component, thereby reducing premature damage caused by impurity blockage.

[0027] In summary, by providing the first grid plate and the second grid plate, and combining the design of the strip grid holes, an efficient and easy-to-maintain impurity filtration system is realized, which not only improves the filtration efficiency, but also reduces the subsequent cleaning difficulty and maintenance cost.

[0028] 2. By setting up precise drive components, we have achieved flexible switching between the two sets of filter components. This ingenious design allows the first and second grid plates that are already loaded with impurities to be lifted up during the filtration process, so that they can be easily removed from the filtration process. At the same time, the other unused filter component will immediately take over the filtration function, ensuring the continuity and stability of the entire filtration process.

[0029] This automated switching mechanism greatly improves work efficiency because it eliminates the tedious steps of manually cleaning the filter components. In the past, workers needed to periodically stop the filtering operation and manually clean the impurities on the grille plate, which was not only time-consuming and labor-intensive, but could also lead to a decrease in the filtering effect due to untimely cleaning. Now, with the help of the automated switching function of the drive component, the filtering operation can be carried out almost uninterruptedly, greatly improving the filtering effect.

[0030] In addition, this switching mechanism also helps to extend the service life of the filter components, because each set of filter components has the opportunity to be replaced for cleaning and maintenance before accumulating too much impurities, thereby avoiding excessive wear and damage caused by long-term use. Overall, this innovative design not only improves work efficiency but also reduces maintenance costs.

[0031] 3. In addition, the design of the filter component is very clever. When it is lifted, it will trigger a linkage mechanism, causing the first grid plate and the second grid plate to automatically flip up to both sides. This design is not only easy to operate, but more importantly, it can help to discharge internal impurities more effectively. As the grid plate flips up, impurities that may have been stuck in the gaps will be easily released, greatly reducing the difficulty of cleaning. At the same time, excess water can also be quickly discharged through the multiple filter holes carefully designed on the filter component, ensuring the filtering effect while avoiding the accumulation of water. In this way, the workload of workers has been greatly reduced, which not only improves work efficiency, but also reduces the physical burden of workers, making the entire filtering process more efficient and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the main structure of a trash rack for sewage treatment in a hydropower station proposed by the present invention;

[0033] Figure 2 This is a rear structural schematic diagram of a trash rack for sewage treatment in a hydropower station proposed by the present invention;

[0034] Figure 3 A schematic diagram of the three-dimensional structure of a trash rack for sewage treatment in a hydropower station proposed by the present invention;

[0035] Figure 4 A schematic diagram of the three-dimensional structure of a trash rack for sewage treatment in a hydropower station proposed by the present invention;

[0036] Figure 5 A schematic diagram of the three-dimensional structure of a trash rack for sewage treatment in a hydropower station proposed by the present invention;

[0037] Figure 6 A schematic diagram of the three-dimensional structure of a trash rack for sewage treatment in a hydropower station proposed by the present invention;

[0038] Figure 7 A schematic diagram of the three-dimensional structure of a trash rack for sewage treatment in a hydropower station proposed by the present invention;

[0039] Figure 8 A schematic diagram of the three-dimensional structure of a trash rack for sewage treatment in a hydropower station proposed by the present invention;

[0040] Fig. 9 This is a schematic diagram of the three-dimensional structure of a trash rack for sewage treatment in a hydropower station proposed by the present invention.

[0041] In the figure: 1, outer frame for blocking dirt; 2, water inlet; 3, gear; 4, fixing block; 5, first L-shaped rod; 6, push plate; 7, connecting rod; 8, drain outlet; 9, first connecting block; 10, first grille plate; 11, side plate; 12, second L-shaped rod; 13, rack; 14, second grille plate; 15, inclined plate; 16, vertical plate; 17, collection box; 18, connecting plate; 19, chute; 20, first rotating plate Axis; 21. first grille hole; 22. second grille hole; 23. L-shaped plate; 24. sieve hole; 25. filter hole; 26. inclined slot; 27. vertical slot; 28. rectangular plate; 29. ​​slider; 30. fixing rod; 31. strip plate; 32. inclined hole; 33. tension spring; 37. electric push rod; 38. second connecting block; 39. horizontal hole; 40. horizontal plate; 41. vertical hole; 42. connecting round rod; 43. discharge port. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. It should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "setting" should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0043] Reference Figure 1-Figure 9 A trash screen for sewage treatment in a hydropower station comprises a trash screen outer frame 1, which is arranged at the water inlet position of the hydropower station, and the two ends of the trash screen outer frame 1 are respectively fixedly connected with a water inlet 2 and a drain 8, and two groups of filter components for filtering impurities in the trash screen outer frame 1 are arranged in parallel inside the trash screen outer frame 1, and the two groups of filter components can be used alternately, so as to continuously achieve a trash screen effect for a continuous flow of water;

[0044] The filter assembly includes two side plates 11, which are fixedly connected to the two sides of the dirt-blocking outer frame 1, and also includes a first grid plate 10 and a second grid plate 14. The first grid plate 10 and the second grid plate 14 are both arranged inside the dirt-blocking outer frame 1. A plurality of first grid holes 21 are opened inside the first grid plate 10, and a plurality of second grid holes 22 are opened inside the second grid plate 14. Since the first grid holes 21 and the second grid holes 22 are both arranged in strips, they will not be blocked in the holes when the internal impurities are subsequently cleaned, thereby reducing the difficulty of subsequent cleaning. An L-shaped plate 23 is fixedly connected to the bottom of the first grid plate 10, and one side of the L-shaped plate 23 and the second grid plate 14 are both provided with a collecting assembly for collecting impurities. The collecting assembly includes a collecting assembly fixedly connected to one side of the L-shaped plate 23 and the second grid plate 14, respectively. Two collecting boxes 17, a plurality of sieve holes 24 are provided on the top of the collecting box 17, and the deposited sand and gravel can be sent into the interior of the collecting box 17, a discharge port 43 is provided on one side of the collecting box 17, and a plurality of filter holes 25 are provided on the bottom and both sides of the collecting box 17, and the plurality of sieve holes 24 and the filter holes 25 can discharge the internal water when the collecting box 17 rises, and will not carry the water out, and a chute 26 is provided on the bottom inner wall of the collecting box 17, which can help the internal impurities to slide out, and the sewage enters the interior of the sewage blocking outer frame 1 from the water inlet 2, and is filtered through the second grid plate 14 and the first grid plate 10, and the impurities cannot pass through, and the impurities are gradually deposited, and the impurities can be brought into the interior of the collecting box 17 through the plurality of sieve holes 24, and the water can be discharged through the plurality of filter holes 25, and the impurities remain in the interior of the collecting box 17;

[0045] A flip assembly for controlling the flipping of the first grid plate 10 and the second grid plate 14 is provided on one side of the side plate 11. The flip assembly includes a slide groove 19 opened on one side of the side plate 11. The slide groove 19 is slidably connected to a slider 29 inside to ensure the stability of the movement of the device. A rectangular plate 28 is fixedly connected to one side of the slider 29. A first rotating shaft 20 is rotatably connected to one side of the rectangular plate 28. A gear 3 and a connecting plate 18 are fixedly sleeved on the outer wall of the first rotating shaft 20. The top of the connecting plate 18 is fixedly connected to a first connecting block 9. The two first connecting blocks 9 are fixedly connected to the first rotating shaft 20. The connecting block 9 is fixedly connected to the top of one side of the first grid plate 10 and the second grid plate 14 respectively, a vertical groove 27 is opened on one side of the connecting plate 18, and two symmetrically arranged fixing rods 30 are fixedly connected to one side of the dirt-blocking outer frame 1, and one end of the two fixing rods 30 is fixedly connected to the same strip plate 31, and the strip plate 31 is slidably connected to the vertical groove 27. A second L-shaped rod 12 is fixedly connected to the top of one side of the side plate 11, and one end of the second L-shaped rod 12 is fixedly connected to a rack 13 meshing with the gear 3. When the first L-shaped rod 5 moves up, The rectangular plate 28 is driven to move upward, and the rectangular plate 28 drives the first connecting block 9 and the sliding block 29 to move upward. At this time, since the first grid plate 10 and the second grid plate 14 are both inside the dirt-blocking outer frame 1 and there is no external force, the first grid plate 10 and the second grid plate 14 move vertically upward, and drive the two collecting boxes 17 below to move upward, and the discharge port 43 is blocked by the dirt-blocking outer frame 1, and impurities will not leak out. As the connecting plate 18 and the rectangular plate 28 gradually rise, the gear 3 and the rack 13 begin to mesh, and the second grid plate 14 and the first grid plate 14 are engaged. The grid plate 10 moves to the top of the dirt-blocking outer frame 1, and the gear 3 starts to rotate, the gear 3 drives the first rotating shaft 20 to rotate, the first rotating shaft 20 drives the connecting plate 18 to rotate, the connecting plate 18 drives the first connecting block 9 to rotate, and the first connecting block 9 drives the first grid plate 10 and the second grid plate 14 to rotate toward the two sides of the dirt-blocking outer frame 1. At this time, the first grid plate 10 and the second grid plate 14 are separated, and drive the collection boxes 17 on both sides to rotate, and the impurities in the collection box 17 are discharged through the discharge port 43, which is convenient for filtering next time and easy to use;

[0046] Two symmetrically arranged fixed blocks 4 are fixedly connected on both sides of the pollution-blocking outer frame 1. The two fixed blocks 4 are located between the two side plates 11. The tops of the two fixed blocks 4 located on the same side are provided with the same set of driving components, and the driving components are used to switch the two sets of filtering components. The driving components include the same horizontal plate 40 fixedly connected to the top of the fixed block 4, and both ends of the horizontal plate 40 are fixedly connected to the inclined plate 15. The inclined plate 15 has an inclined hole 32 inside, and the horizontal plate 40 has a horizontal hole 39 inside. The inclined holes 32 are respectively connected to the two ends of the horizontal hole 39. A vertical plate 16 is slidably connected to one side of the pollution-blocking outer frame 1, and an electric push rod 37 is fixedly connected to the back of one of the side plates 11. The piston rod of the electric push rod 37 is fixedly connected to one side of the vertical plate 16. A vertical hole 41 is opened inside the vertical plate 16, and a second connecting block 38 is slidably connected inside the vertical hole 41. The top of the second connecting block 38 is fixedly connected to the top inner wall of the vertical plate 16 with the same tension spring 33. In the filtering section After a certain time, the two groups of filter components can be switched, and then the electric push rod 37 can be started. The piston rod of the electric push rod 37 pushes the vertical plate 16 to move horizontally, and the vertical plate 16 drives the second connecting block 38 to move horizontally. The second connecting block 38 drives the connecting round rod 42 to move horizontally, and the connecting round rod 42 drives the connecting rod 7 to move horizontally. The connecting rod 7 drives the pushing plate 6 to move horizontally. At this time, the connecting round rod 42 moves from the inside of an inclined hole 32 to the inside of the horizontal hole 39, and the tension spring 33 is stretched. At this time, both groups of filter components are located inside the dirt-blocking outer frame 1, and the pushing plate 6 is located below the two first L-shaped rods 5. When the vertical plate 16 continues to move, the connecting round rod 42 moves to the other side of the horizontal hole 39, and the pushing plate 6 moves to the bottom of the other first L-shaped rod 5. The vertical plate 16 continues to move, and the connecting round rod 42 gradually rises along the inclined hole 32. At the same time, the second connecting block 38 moves vertically upward under the tension of the tension spring 33, which can help lift the other first L-shaped rod 5.

[0047] In the present invention, one side of the second connecting block 38 is fixedly connected to a connecting round rod 42, and the connecting round rod 42 is used in conjunction with the transverse hole 39 and the inclined hole 32. One end of the inclined hole 32 is fixedly connected to a connecting rod 7, and one end of the connecting rod 7 is fixedly connected to a pushing plate 6. One side of the rectangular plate 28 is fixedly connected to a first L-shaped rod 5, and the pushing plate 6 is located at the bottom of the two first L-shaped rods 5 and is used in conjunction with the first L-shaped rods 5. The connecting rod 7 and the pushing plate 6 can help provide power for the lifting of the two filtering components.

[0048] In particular, the first grille holes 21 and the second grille holes 22 are arranged vertically.

[0049] A method for intercepting wastewater using a trash screen for sewage treatment in a hydropower station, comprising the following steps:

[0050] S1, sewage enters from the water inlet 2, is filtered by the filter assembly, and is discharged through the drain outlet 8;

[0051] S2, switch the two filter components through the driving component and use them alternately to avoid clogging of the device;

[0052] S3. The first grid plate 10 and the second grid plate 14 can be turned over by the turning assembly to pour out the impurities inside.

[0053] Working principle: Sewage enters the interior of the sewage blocking outer frame 1 from the water inlet 2, and is filtered through the second grid plate 14 and the first grid plate 10. Impurities cannot pass through and are gradually deposited. Impurities can enter the interior of the collection box 17 through multiple sieve holes 24. Water can be discharged through multiple filter holes 25, and impurities remain in the interior of the collection box 17.

[0054] After filtering for a period of time, the two groups of filtering components can be switched, and then the electric push rod 37 is started, the piston rod of the electric push rod 37 pushes the vertical plate 16 to move horizontally, the vertical plate 16 drives the second connecting block 38 to move horizontally, the second connecting block 38 drives the connecting round rod 42 to move horizontally, the connecting round rod 42 drives the connecting rod 7 to move horizontally, and the connecting rod 7 drives the push plate 6 to move horizontally;

[0055] At this time, the connecting rod 42 moves from the inside of an inclined hole 32 to the inside of the transverse hole 39, and the tension spring 33 is stretched. At this time, both sets of filter components are located inside the dirt-blocking outer frame 1, and the push plate 6 is located below the two first L-shaped rods 5. When the vertical plate 16 continues to move, the connecting rod 42 moves to the other side of the transverse hole 39, and the push plate 6 moves to the bottom of the other first L-shaped rod 5. The vertical plate 16 continues to move, and the connecting rod 42 gradually rises along the inclined hole 32. At the same time, the second connecting block 38 moves vertically upward under the tension of the tension spring 33, which can help lift the other first L-shaped rod 5.

[0056] When the first L-shaped rod 5 moves upward, the rectangular plate 28 can be driven upward, and the rectangular plate 28 drives the first connecting block 9 and the slider 29 to move upward. At this time, since the first grid plate 10 and the second grid plate 14 are both inside the dirt-blocking outer frame 1 and there is no external force, the first grid plate 10 and the second grid plate 14 move vertically upward and drive the two collecting boxes 17 below to move upward. The discharge port 43 is blocked by the dirt-blocking outer frame 1, and impurities will not leak out.

[0057] As the connecting plate 18 and the rectangular plate 28 gradually rise, the gear 3 begins to mesh with the rack 13, the second grid plate 14 and the first grid plate 10 move to the top of the dirt-blocking outer frame 1, and the gear 3 begins to rotate. The gear 3 drives the first rotating shaft 20 to rotate, the first rotating shaft 20 drives the connecting plate 18 to rotate, the connecting plate 18 drives the first connecting block 9 to rotate, and the first connecting block 9 drives the first grid plate 10 and the second grid plate 14 to rotate toward both sides of the dirt-blocking outer frame 1. At this time, the first grid plate 10 and the second grid plate 14 are separated, and drive the collecting boxes 17 on both sides to rotate, and the impurities inside the collecting box 17 are discharged through the discharge port 43, which is convenient for filtering next time and easy to use.

[0058] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A trash screen for sewage treatment in a hydropower station, comprising a trash screen outer frame (1), characterized in that: The two ends of the trash-blocking outer frame (1) are respectively fixedly connected with a water inlet (2) and a water outlet (8), and the two groups of filter components of the trash-blocking outer frame (1) are used to filter impurities. The two groups of filter components are arranged in parallel inside the trash-blocking outer frame (1); The filter assembly comprises two side plates (11), the two side plates (11) being fixedly connected to two sides of the dirt-blocking outer frame (1), and further comprises a first grid plate (10) and a second grid plate (14), the first grid plate (10) and the second grid plate (14) being arranged inside the dirt-blocking outer frame (1), a plurality of first grid holes (21) being provided inside the first grid plate (10), a plurality of second grid holes (22) being provided inside the second grid plate (14), an L-shaped plate (23) being fixedly connected to the bottom of the first grid plate (10), and a collecting assembly for collecting impurities being provided on one side of the L-shaped plate (23) and the second grid plate (14); A flip assembly for controlling the flipping of the first grid plate (10) and the second grid plate (14) is provided on one side of the side plate (11); Two symmetrically arranged fixed blocks (4) are fixedly connected to both sides of the dirt-blocking outer frame (1), the two fixed blocks (4) are located between the two side plates (11), and the tops of the two fixed blocks (4) located on the same side are provided with the same set of drive components, the drive components being used to switch between the two sets of filter components; The flip assembly comprises a slide groove (19) provided on one side of the side plate (11); a slider (29) is slidably connected inside the slide groove (19); a rectangular plate (28) is fixedly connected to one side of the slider (29); a first rotating shaft (20) is rotatably connected to one side of the rectangular plate (28); a gear (3) and a connecting plate (18) are fixedly sleeved on the outer wall of the first rotating shaft (20); a first connecting block (9) is fixedly connected to the top of the connecting plate (18); two first connecting blocks (9) are respectively fixedly connected to the top of one side of the first grid plate (10) and the second grid plate (14); A vertical groove (27) is provided on one side of the connecting plate (18); two symmetrically arranged fixing rods (30) are fixedly connected to one side of the dirt-blocking outer frame (1); one end of the two fixing rods (30) is fixedly connected to the same strip plate (31); the strip plate (31) is slidably connected to the vertical groove (27); a second L-shaped rod (12) is fixedly connected to the top of one side of the side plate (11); one end of the second L-shaped rod (12) is fixedly connected to a rack (13) meshing with the gear (3); The driving assembly comprises a same horizontal plate (40) fixedly connected to the top of the fixed block (4), both ends of the horizontal plate (40) being fixedly connected to inclined plates (15), an inclined hole (32) being provided inside the inclined plate (15), a horizontal hole (39) being provided inside the horizontal plate (40), and the inclined hole (32) being respectively connected to both ends of the horizontal hole (39).

2. A trash rack for sewage treatment in a hydropower station according to claim 1, characterized in that: The collecting assembly comprises two collecting boxes (17) respectively fixedly connected to one side of the L-shaped plate (23) and the second grid plate (14); a plurality of sieve holes (24) are provided on the top of the collecting box (17); a discharge port (43) is provided on one side of the collecting box (17); a plurality of filter holes (25) are provided on the bottom and both sides of the collecting box (17); and an inclined groove (26) is provided on the inner wall of the bottom of the collecting box (17).

3. A trash rack for sewage treatment in a hydropower station according to claim 2, characterized in that: A vertical plate (16) is slidably connected to one side of the dirt-blocking outer frame (1), an electric push rod (37) is fixedly connected to the back of one of the side plates (11), a piston rod of the electric push rod (37) is fixedly connected to one side of the vertical plate (16), a vertical hole (41) is provided inside the vertical plate (16), a second connecting block (38) is slidably connected inside the vertical hole (41), and a tension spring (33) is fixedly connected between the top of the second connecting block (38) and the inner wall of the top of the vertical plate (16).

4. A trash rack for sewage treatment in a hydropower station according to claim 3, characterized in that: A connecting round rod (42) is fixedly connected to one side of the second connecting block (38), the connecting round rod (42) being used in conjunction with the transverse hole (39) and the inclined hole (32), a connecting rod (7) being fixedly connected to one end of the inclined hole (32), a push plate (6) being fixedly connected to one end of the connecting rod (7), a first L-shaped rod (5) being fixedly connected to one side of the rectangular plate (28), the push plate (6) being located at the bottom of the two first L-shaped rods (5) and being used in conjunction with the first L-shaped rods (5).

5. A trash rack for sewage treatment in a hydropower station according to claim 4, characterized in that: The first grille holes (21) and the second grille holes (22) are arranged vertically.

6. A method for trapping trash using a trash screen for sewage treatment in a hydropower station according to any one of claims 1 to 5, characterized in that: The specific steps include: S1, sewage enters from the water inlet (2), is filtered by the filter assembly, and is discharged through the drain outlet (8); S2, switch the two filter components through the driving component and use them alternately to avoid clogging of the device; S3. The first grid plate (10) and the second grid plate (14) can be turned over by using the turning assembly to pour out the impurities inside.

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