Trash cleaning device for trash rack of pumped storage power station

Abstract

The present invention relates to the field of cleaning equipment for the reservoir of a hydropower station, specifically a device for cleaning the dirt on the trash rack of a pumped-storage hydropower station. It includes a fixed frame arranged on one side of the water inlet of the trash rack body, a lifting and adjusting mechanism located at the top of the fixed frame, and a dirt cleaning mechanism slidably connected to the inner side of the fixed frame. The fixed frame is of an inverted "U" shape. The lifting and adjusting mechanism includes a double-shaft motor, a long shaft connected to the shaft parts at both ends of the double-shaft motor, a winding wheel sleeved on the end of the long shaft, and a rope wound around the winding wheel. The dirt cleaning mechanism includes a movable plate, a cutting mechanism slidably connected to one side of the movable plate, a driving mechanism located in the inner cavity of the movable plate for the transverse movement of the cutting mechanism, and a collection box located at the bottom of the movable plate. The driving mechanism includes a motor, a lead screw connected to the shaft part of the motor, and a movable block threadedly connected to the lead screw. The structure is reasonable, easy to operate, saves labor, and thus greatly reduces the labor intensity of workers.

Description

Technical Field

[0001] The present invention relates to the field of sewage cleaning equipment for hydropower station reservoirs, and specifically to a sewage cleaning device for trash racks of pumped-storage hydropower stations. Background Art

[0002] In the prior art, there are often a lot of dirt such as branches, leaves, garbage bags, etc. floating in the power station reservoir. Therefore, a trash rack is set at the water inlet of the water turbine to prevent dirt from entering the water turbine, so as to avoid head loss and equipment damage. During the use of the trash rack, it bears a large amount of debris accumulation for a long time, which not only affects the use of the trash rack but also causes head loss. Therefore, the trash rack needs to be cleaned.

[0003] The existing cleaning methods mainly use machinery to clean dirt. It mainly uses a sewage cleaner to remove the dirt in the pool, but it requires manual auxiliary operation, which is time-consuming and cannot effectively clean the dirt on the trash rack. Some reservoirs also carry out manual cleaning, which not only causes the power station to stop working but also cannot clean the deep-water dirt thoroughly. In addition, most of the dirt will be wound or adhered to the trash rack, and most of the existing cleaning devices are mainly in the form of salvage, which cannot clean the adhered dirt cleanly, and it is more laborious when encountering large objects, which is not conducive to the cleaning of dirt. Summary of the Invention

[0004] The purpose of the present invention is to provide a sewage cleaning device for trash racks of pumped-storage hydropower stations with good use effect and reasonable structure.

[0005] The technical solution of the present invention is: a sewage cleaning device for trash racks of pumped-storage hydropower stations, which is characterized in that it includes a fixed frame arranged on one side of the water inlet of the trash rack body, a lifting and adjusting mechanism located at the top of the fixed frame, and a sewage cleaning mechanism slidably connected to the inner side of the fixed frame.

[0006] The fixed frame is of an inverted "U" shape structure.

[0007] The lifting and adjusting mechanism includes a double-shaft motor, a long shaft connected to the shaft parts at both ends of the double-shaft motor, a winding wheel sleeved on the end part of the long shaft, and a rope wound around the winding wheel.

[0008] The sewage cleaning mechanism includes a movable plate, a cutting mechanism slidably connected to one side of the movable plate, a driving mechanism located in the inner cavity of the movable plate for the transverse movement of the cutting mechanism, and a collection box located at the bottom of the movable plate.

[0009] The driving mechanism includes a motor, a lead screw connected to the shaft part of the motor, and a movable block threadedly connected to the lead screw.

[0010] The cutting mechanism includes a waterproof housing, a cutting motor located inside the waterproof housing, a baffle plate connected to the shaft of the cutting motor, and a cutting blade fixedly connected to the baffle plate. The cutting blade is of a disc structure, and the movable block is fixedly connected to the side wall of the waterproof housing.

[0011] In the above solution,

[0012] The baffle plate is of a circular structure. A connecting convex block is provided on one side of the baffle plate where it faces the cutting blade. A limiting groove is provided on the surface of the connecting convex block. A limiting block is correspondingly provided on the surface of the cutting blade for the limiting groove. The size of the limiting block matches the size of the limiting groove, and both the limiting block and the limiting groove are of an equilateral triangle structure. Moreover, evenly distributed bristles at equal intervals are provided on the side of the cutting blade away from the limiting block.

[0013] Threaded holes are provided on the surface of the connecting convex block outside the limiting groove. Mounting holes are correspondingly provided on the surface of the cutting blade for the threaded holes. The cutting blade and the connecting convex block are fixedly connected by screws.

[0014] Leakage holes evenly distributed at equal intervals are provided at the bottom of the collection box, and one side at the top of the collection box is fixedly connected to the bottom of the movable plate through a fixing plate.

[0015] The fixing plate is of an "L" - shaped structure.

[0016] An opening is provided at the connection between the movable plate and the movable block. The size of the movable block matches the size of the opening, and the movable block is slidably connected to the opening.

[0017] By starting the biaxial motor, the long shaft rotates, so that the winding wheel releases the rope, and the height that the movable plate descends each time is the height of one movable plate. At the same time, the motor and the cutting motor are started. At this time, with the cooperation of the lead screw and the movable block, the waterproof housing drives the cutting blade to move horizontally and slowly. At the same time, the cutting motor makes the baffle plate and the cutting blade rotate. Since the cutting blade contacts the surface of the trash rack, the blade can crush the dirt wrapped around the trash rack, and the dirt directly falls into the collection box located below the cutting blade. At the same time, during the cutting process, the bristles will penetrate into the trash rack to clean the trash rack, so that the dirt adhered to the trash rack is shaken off by the vibration generated by the cleaning, which is beneficial to cleaning the dirt on the trash rack. At the same time, the cleaned dirt will not remain on one side of the trash rack. When the cleaning is completed, the movable plate can be lifted by the biaxial motor, so that the staff can process the dirt in the collection box. Under the action of the lifting and adjusting mechanism and the driving mechanism, the cutting blade can move up, down, left, and right on the trash rack, so that the trash rack can be comprehensively cleaned. Through the cooperation between the limiting block and the limiting groove, it is convenient to disassemble and install the cutting blade, so as to facilitate the replacement of the cutting blade.

[0018] The advantages of the present invention are as follows: 1. High degree of automation, reasonable structure, convenient operation, saving labor force, thus greatly reducing the labor intensity of workers. 2. Driven by a dual-axis motor, the dirt cleaning mechanism moves up and down and the cutting mechanism moves left and right, which is conducive to comprehensively cleaning the dirt on the trash rack. 3. The dual-axis motor and the dirt cleaning mechanism are arranged in a portal structure, with a compact and reasonable structure. 4. The baffle and the cutting knife are matched through the cooperation between the limit block and the limit groove, which is convenient for disassembling and installing the cutting knife, and thus convenient for replacing the cutting knife. 5. Uniformly distributed bristles are arranged on one side of the cutting mechanism. Under the action of the bristles, the dirt adhered to the trash rack can be swept off, so that the dirt falls onto the collection box for collection.

[0019] The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present invention.

[0021] Figure 2 is a schematic structural diagram of the dirt cleaning mechanism in the present invention.

[0022] Figure 3 is Figure 2 the top view of

[0023] Figure 4 is a schematic structural diagram of the collection box in the present invention.

[0024] Figure 5 is a schematic structural diagram of the cutting mechanism in the present invention.

[0025] Figure 6 is a schematic structural diagram showing the connection of the cutting knife in the present invention.

[0026] Figure 7 is a schematic structural diagram showing the connection structure between the baffle and the cutting knife in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Refer to Figure 1 -7, the names of the components are as follows: 1. Fixed frame; 2. Dual-axis motor; 3. Long shaft; 4. Winding wheel; 5. Dirt cleaning mechanism; 6. Trash rack body; 7. Rope; 8. Chute; 9. Movable plate; 10. Collection box; 11. Slide block; 12. Fixed ear; 13. Opening; 14. Waterproof shell; 15. Cutting mechanism; 16. Motor; 17. Movable block; 18. Fixed plate; 19. Leakage hole; 20. Baffle; 21. Cutting knife; 22. Bristles; 23. Limit block; 24. Mounting hole; 25. Connecting convex block; 26. Limit groove; 27. Threaded hole; 28. Lead screw.

[0028] Refer to Figures 1 to 7, the debris cleaning device for the trash rack of a pumped-storage power station, includes a fixed frame 1 arranged on one side of the water inlet of the trash rack body 6, a lifting and adjusting mechanism located at the top of the fixed frame 1, and a debris cleaning mechanism 5 slidably connected to the inner side of the fixed frame 1; wherein, the fixed frame 1 is of an inverted "U" shape (or door frame shape), and the distance between the two vertical parts of the fixed frame 1 is greater than the length of the trash rack body 6; the lifting and adjusting mechanism includes a double-shaft motor 2, a long shaft 3 connected to the shaft parts at both ends of the double-shaft motor 2, a winding wheel 4 sleeved on the end of the long shaft 3, and a rope 7 wound around the winding wheel 4; the debris cleaning mechanism 5 includes a movable plate 9, a cutting mechanism 15 slidably connected to one side of the movable plate 9, a driving mechanism located in the inner cavity of the movable plate 9 for driving the cutting mechanism 15 to move horizontally, and a collection box 10 located at the bottom of the movable plate 9, and the bottom of the rope 7 is fixedly connected to the upper surface of the movable plate 9.

[0029] Bearing seats are arranged on both sides of the upper surface of the fixed frame 1, and the long shaft 3 is rotatably connected to the bearing seats through bearings. Through the arrangement of the bearing seats, the long shaft 3 is supported.

[0030] Through holes corresponding to the rope 7 are arranged on both sides of the upper surface of the fixed frame 1, and the diameter of the through holes is greater than the diameter of the rope 7. Through the arrangement of the through holes, the rope 7 can move in the through holes.

[0031] The driving mechanism includes a motor 16, a lead screw 28 connected to the shaft part of the motor 16, and a movable block 17 threadedly connected to the lead screw 28. Through the cooperation among the motor 16, the lead screw 28 and the movable block 17, the cutting mechanism 15 can move horizontally.

[0032] The cutting mechanism 15 includes a waterproof shell 14, a cutting motor located in the inner cavity of the waterproof shell 14, a baffle 20 connected to the shaft part of the cutting motor, and a cutting knife 21 fixedly connected to the baffle 20. The cutting knife 21 is of a disc structure. The movable block 17 is fixedly connected to the side wall of the waterproof shell 14. Through the arrangement of the baffle 20, when the cutting knife 21 rotates to cut the debris, the phenomenon that the debris bounces out from the back of the cutting knife 21 can be effectively prevented. The baffle 20 can block the debris, so that the debris can fall vertically.

[0033] The baffle 20 is of a circular structure. A connecting convex block 25 is arranged on one side of the cutting knife 21. A limiting groove 26 is arranged on the surface of the connecting convex block 25. A limiting block 23 corresponding to the limiting groove 26 is arranged on the surface of the cutting knife 21. The size of the limiting block 23 matches the size of the limiting groove 26. Both the limiting block 23 and the limiting groove 26 are of an equilateral triangle structure. And a uniformly distributed brush hair 22 at equal intervals is arranged on the side of the cutting knife 21 away from the limiting block 23. Through the cooperation between the limiting block 23 and the limiting groove 26, the cutting knife 21 is made more stable, which is beneficial to the normal operation of the cutting knife 21. And under the action of the brush hair 22, the dirt adhering to the trash rack can be cleaned and fallen off, so that the dirt falls onto the collection box 10 for collection.

[0034] A threaded hole 27 is arranged on the surface of the connecting convex block 25 outside the limiting groove 26. A mounting hole 24 corresponding to the threaded hole 27 is arranged on the surface of the cutting knife 21. The cutting knife 21 and the connecting convex block 25 are fixedly connected by screws. Since the cutting knife 21 is a vulnerable part, through the arrangement of the threaded hole 27 and the mounting hole 24, it is convenient to disassemble and install the cutting knife 21, so as to facilitate the replacement of the cutting knife 21.

[0035] The size of the top opening of the collection box 10 is larger than that of the bottom. And the opening of the collection box 10 is located directly below the cutting mechanism 15. A uniformly distributed water leakage hole 19 at equal intervals is arranged at the bottom of the collection box 10. And one side of the top of the collection box 10 is fixedly connected with the bottom of the movable plate 9 through a fixing plate 18. The fixing plate 18 is of an "L" - shaped structure. Through the arranged water leakage hole 19, when the collection box 10 is lifted, it is convenient for water to flow out from the water leakage hole 19.

[0036] Sliding grooves 8 are arranged on the inner walls of both sides of the fixing frame 1. Sliders 11 corresponding to the sliding grooves 8 are arranged on both sides of the movable plate 9. The sliders 11 are slidably connected with the sliding grooves 8. And fixing ears 12 corresponding to the ropes 7 are arranged on both sides of the upper surface of the movable plate 9. The ropes 7 are fixedly connected with the fixing ears 12. Through the cooperation between the sliders 11 and the sliding grooves 8, a limiting effect is exerted on the movable plate 9.

[0037] An opening 13 is arranged at the connection between the movable plate 9 and the movable block 17. The size of the movable block 17 matches the size of the opening 13. The movable block 17 is slidably connected with the opening 13. Through the arrangement of the opening 13, a limiting effect is exerted on the movable block 17.

[0038] Working principle: Fix the fixing frame 1 on one side of the water inlet of the trash rack. The fixing frame 1 can be fixed on the dams on both sides, so that it is convenient for the staff to walk from the dam to the top of the fixing frame 1. After installing the device, start the biaxial motor 2, so that the long shaft 3 rotates, and then the winding wheel 4 releases the rope 7, so that the height of the movable plate 9 drops by the height of one movable plate 9 each time. At the same time, start the motor 16 and the cutting motor. At this time, under the cooperation of the lead screw 28 and the movable block 17, the waterproof shell 14 drives the cutting knife 21 to move horizontally slowly. At the same time, the cutting motor makes the baffle 20 and the cutting knife 21 rotate. Since the cutting knife 21 contacts the surface of the trash rack, the blade can crush the dirt wrapped on the trash rack, so that the dirt directly falls into the collection box 10 located below the cutting knife 21. At the same time, during the cutting, the brush hairs 22 will penetrate into the trash rack to clean the trash rack, so that the dirt adhered to the trash rack is shaken off by the vibration generated by the cleaning, which is beneficial to cleaning the dirt on the trash rack. At the same time, the cleaned dirt will not remain on one side of the trash rack. After the cleaning is completed, the movable plate 10 can be lifted by the biaxial motor 2, so that the staff can process the dirt in the collection box 10. Under the action of the lifting and adjusting mechanism and the driving mechanism, the cutting knife 21 can move up, down, left and right on the trash rack, so that the trash rack can be cleaned comprehensively.

[0039] The above description is only the specific implementation manner of the present invention, and various examples do not constitute a limitation to the essence of the present invention.

Claims

1. Trash cleaning device for trash rack of pumped - storage power station, Characterized in that, It includes a fixed frame (1) arranged on one side of the water inlet of the trash rack body (6), a lifting and adjusting mechanism at the top of the fixed frame (1), and a trash cleaning mechanism (5) slidably connected to the inner side of the fixed frame (1); The fixed frame (1) is of an inverted "U" - shaped structure; The lifting and adjusting mechanism includes a double - shaft motor (2), a long shaft (3) connected to the shaft parts at both ends of the double - shaft motor (2), a winding wheel (4) sleeved on the end of the long shaft (3), and a rope (7) wound around the winding wheel (4); The trash cleaning mechanism (5) includes a movable plate (9), a cutting mechanism (15) slidably connected to one side of the movable plate (9), a driving mechanism for the lateral movement of the cutting mechanism (15) in the inner cavity of the movable plate (9), and a collection box (10) at the bottom of the movable plate (9); The driving mechanism includes a motor (16), a lead screw (28) connected to the shaft part of the motor (16), and a movable block (17) threadedly connected to the lead screw (28); The cutting mechanism (15) includes a waterproof shell (14), a cutting motor in the inner cavity of the waterproof shell (14), a baffle (20) connected to the shaft part of the cutting motor, and a cutting knife (21) fixedly connected to the baffle (20). The cutting knife (21) is of a disc structure, and the movable block (17) is fixedly connected to the side wall of the waterproof shell (14); The baffle (20) is of a circular structure. A connecting convex block (25) is arranged on one side of the baffle (20) where the cutting knife (21) is located. A limiting groove (26) is arranged on the surface of the connecting convex block (25). A limiting block (23) corresponding to the limiting groove (26) is arranged on the surface of the cutting knife (21). The size of the limiting block (23) matches the size of the limiting groove (26). Both the limiting block (23) and the limiting groove (26) are of an equilateral triangle structure. And a uniformly distributed brush (22) at equal intervals is arranged on the side of the cutting knife (21) away from the limiting block (23); An opening (13) is arranged at the connection between the movable plate (9) and the movable block (17). The size of the movable block (17) matches the size of the opening (13). The movable block (17) is slidably connected to the opening (13).

2. The trash cleaning device for trash rack of pumped - storage power station according to claim 1, Characterized in that, A threaded hole (27) is arranged on the surface of the connecting convex block (25) outside the limiting groove (26). A mounting hole (24) corresponding to the threaded hole (27) is arranged on the surface of the cutting knife (21). The cutting knife (21) and the connecting convex block (25) are fixedly connected by screws.

3. The trash cleaning device for trash rack of pumped - storage power station according to claim 1, Characterized in that, Leakage holes (19) evenly distributed at equal intervals are arranged at the bottom of the collection box (10). And one side of the top of the collection box (10) is fixedly connected to the bottom of the movable plate (9) through a fixing plate (18).

4. The trash cleaning device for trash rack of pumped - storage power station according to claim 3, Characterized in that, The fixed plate (18) has an "L"-shaped structure.

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