Reservoir trash screen with self-cleaning function

Abstract

The application discloses a reservoir trash screen with a self-cleaning function, and relates to the field of water conservancy equipment.The technical scheme is that a column is fixedly arranged on both sides of a reservoir gate, a plurality of arc-shaped bars are arranged between the two columns, the bars are arranged on the water-approaching surface of the column, and a channel for water flow is formed between two adjacent bars;the upper and lower ends of the two columns are fixedly connected through mounting racks, two cleaning mechanisms for cleaning the bars are symmetrically arranged on the mounting racks;and a conveying belt for transferring dirt is further fixedly arranged on each column.The application has the advantages that the trash screen can be automatically cleaned, the cleaning process does not need to stop, the working efficiency of the hydropower station is effectively improved, the self-cleaning capacity is strong, the dirt on the trash screen can be effectively cleaned, and the dirt on the trash screen under the water can also be cleaned.

Description

Technical Field

[0001] This invention relates to the field of water conservancy equipment, and in particular to a reservoir debris barrier with self-cleaning function. Background Technology

[0002] In the upstream area of ​​pumped power stations, a lot of debris such as branches, leaves, and garbage bags often float in the reservoir. Therefore, trash racks are installed at the turbine inlet to prevent debris from entering the turbine and causing head loss and equipment damage.

[0003] During use, trash racks are subjected to a large amount of debris accumulation over a long period of time, which not only affects their function but also necessitates cleaning. In practice, this is usually done manually using tools such as rakes and hooks to remove the debris adhering to the trash racks. Manual cleaning is time-consuming and cannot remove debris from the trash racks in a timely manner. Furthermore, manual cleaning requires the power station to stop operating, and it is also difficult to completely remove debris from deep water. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a reservoir debris barrier with a self-cleaning function.

[0005] The technical solution includes columns fixedly installed on both sides of the reservoir gate, with several arc-shaped gratings between the two columns. The gratings are set on the water-facing side of the columns, and a channel for water flow is formed between two adjacent gratings. The upper and lower ends of the two columns are fixedly connected by a mounting bracket, and two cleaning mechanisms for cleaning the grid bars are symmetrically arranged on the mounting bracket; Each of the columns is also fixedly equipped with a waste transfer conveyor belt.

[0006] Preferably, the cleaning mechanism includes two sets of cleaning units symmetrically arranged on the mounting frame. Each set of cleaning units includes a rotating shaft rotatably arranged on the mounting frame. Several fixing rods are fixedly arranged on the side wall of the rotating shaft, and each fixing rod corresponds to one of the channels. The movable end of the fixed rod is inserted into the auxiliary rod, and the movable end of the auxiliary rod is fixedly provided with a toggle fork; A gear is coaxially fixed at the upper end of each of the rotating shafts, and the two gears mesh with each other. A drive motor is fixed on one of the mounting brackets located above, and the motor shaft of the drive motor is coaxially fixed with one of the rotating shafts.

[0007] Preferably, a connecting rod is fixedly provided at one end of the auxiliary rod away from the actuating fork, a spring is sleeved on the connecting rod, one end of the spring is fixedly connected to the auxiliary rod, the other end is fixedly connected to the fixed rod, and a connecting member is fixedly provided on the connecting rod; A locking device is fixedly installed in the middle of the fixed rod, and the locking device is detachably connected to the connecting member. An unlocking device is also slidably installed inside the fixed rod.

[0008] Preferably, the connector includes a connecting plate fixedly connected to the connecting rod, and a locking groove is formed on the plate body of the connecting plate, the locking groove being located at one end of the connecting plate near the locker.

[0009] Preferably, the locking device includes a fixing seat fixedly disposed in the middle of the fixing rod, the fixing seat being in the shape of a circular plate, and two locking hooks symmetrically disposed on the plate of the fixing seat; The middle part of the locking hook is rotatably connected to the fixed base, and each locking hook has a hook-shaped part at one end facing the auxiliary rod and an operating part at the other end; The plate of the fixing seat has an annular groove, and an elastic ring is provided in the groove, which surrounds the two locking hooks.

[0010] Preferably, the unlocker includes a slider that is slidably disposed within the fixed rod, the slider having an insertion hole at one end facing the locker, and a slot being formed on each side of the insertion hole, each slot corresponding to one of the locking hooks; A drive rod is fixedly installed at the other end of the slider. A tension spring is sleeved on the outside of the drive rod. One end of the tension spring is fixedly connected to the slider, and the other end is fixedly connected to the fixed rod.

[0011] Preferably, each of the rotating shafts is provided with an inner rod, which is fixedly mounted on the mounting bracket. Several protrusions are arrayed on the side wall of the inner rod, each protrusion facing the middle of the grid bar, and each protrusion corresponding to one of the fixed rods.

[0012] Preferably, the actuating fork includes a mounting tube fixedly connected to the auxiliary rod, and a plurality of actuating forks are fixedly disposed on the side wall of the mounting tube, the actuating forks sliding within the channel; A limiting protrusion is fixedly installed at each of the two ends of the mounting tube.

[0013] Preferably, guide plates are fixedly provided at both ends of each of the grid bars, the guide plates are located inside the grid bars, and the end of the guide plate near the column extends towards the middle of the grid bar.

[0014] Preferably, the conveyor belt includes a bracket fixedly mounted on a column, the bracket being L-shaped, the surface of the bracket being slidably connected to a transmission belt, and the surface of the transmission belt being arrayed with a plurality of lifting hooks.

[0015] The beneficial effects of the technical solution provided by the embodiments of the present invention are: it can automatically clean the trash rack, and the cleaning process does not require stopping the machine, which effectively improves the working efficiency of the hydropower station; it has strong self-cleaning ability, which can not only effectively clean the trash rack, but also clean the trash rack on the bottom of the water. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the column and grid structure according to an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the cleaning mechanism structure according to an embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram of the internal structure of the fixing rod according to an embodiment of the present invention.

[0020] Figure 5 for Figure 4 Enlarged schematic diagram of part A.

[0021] Figure 6 This is a schematic diagram of the toggle fork structure according to an embodiment of the present invention.

[0022] The attached diagram is labeled as follows: 1. Column; 1-1. Grid bar; 1-2. Mounting bracket; 1-3. Guide plate; 2. Cleaning mechanism; 2-1. Rotating shaft; 2-2. Fixed rod; 2-3. Sub-rod; 2-4. Actuating fork; 2-5. Gear; 2-6. Drive motor; 2-7. Connecting rod; 2-8. Spring; 2-9. Connector; 2-10. Locker; 2-11. Unlocker; 2-12. Connecting plate; 2-13. Locking groove; 2-14. Fixed seat; 2-15. Locking hook; 2-16. Elastic ring; 2-17. Slider; 2-18. Groove; 2-19. Drive rod; 2-20. Tension spring; 2-21. Inner rod; 2-22. Boss; 2-23. Mounting tube; 2-24. Actuating fork; 2-25. Limiting protrusion; 3. Conveyor belt. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. Of course, the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0025] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] Example 1 See Figures 1 to 6 The present invention provides a reservoir debris barrier with self-cleaning function, including columns 1 fixedly installed on both sides of the reservoir gate, and several arc-shaped grid bars 1-1 between two columns 1. The grid bars 1-1 are set on the water-facing side of the columns 1, and a channel for water flow is formed between two adjacent grid bars 1-1. The grid bar 1-1 is arc-shaped. When in use, the impact force of the water flow can automatically flush the dirt attached to the grid bar 1-1 to both sides.

[0028] The upper and lower ends of the two columns 1 are fixedly connected by the mounting bracket 1-2. Two cleaning mechanisms 2 for cleaning the grid bars 1-1 are symmetrically arranged on the mounting bracket 1-2. Each column 1 is also fixedly equipped with a waste transfer conveyor belt 3.

[0029] The cleaning mechanism 2 includes two sets of cleaning units symmetrically arranged on the mounting frame 1-2. Each set of cleaning units includes a rotating shaft 2-1 rotatably arranged on the mounting frame 1-2. Several fixing rods 2-2 are fixedly arranged on the side wall of the rotating shaft 2-1, and each fixing rod 2-2 corresponds to one of the channels. The movable end of the fixed rod 2-2 is inserted into the auxiliary rod 2-3, and the movable end of the auxiliary rod 2-3 is fixedly equipped with the toggle fork 2-4; In the initial state, the actuating forks 2-4 of the two cleaning units are in the middle position of the grid bar 1-1. When the device is in use, the actuating forks 2-4 move to both sides of the grid bar 1-1 respectively, and the dirt attached to the surface of the grid bar is cleaned by the actuating forks 2-4. A gear 2-5 is coaxially fixed at the upper end of each rotating shaft 2-1. The two gears 2-5 mesh with each other. A drive motor 2-6 is fixed on a mounting bracket 1-2 located above. The motor shaft of the drive motor 2-6 is coaxially fixed with one of the rotating shafts 2-1.

[0030] The drive motor 2-6 drives the two rotating shafts 2-1 to reciprocate, thereby moving the dirt on the grid bar 1-1 to both sides of the grid bar 1-1.

[0031] A connecting rod 2-7 is fixedly installed at one end of the auxiliary rod 2-3 away from the actuating fork 2-4. A spring 2-8 is sleeved on the connecting rod 2-7. One end of the spring 2-8 is fixedly connected to the auxiliary rod 2-3, and the other end is fixedly connected to the fixed rod 2-2. A connecting piece 2-9 is fixedly installed on the connecting rod 2-7. A locking device 2-10 is fixedly installed in the middle of the fixed rod 2-2. The locking device 2-10 is detachably connected to the connector 2-9. An unlocking device 2-11 is also slidably installed inside the fixed rod 2-2.

[0032] The connector 2-9 includes a connecting plate 2-12 that is fixedly connected to the connecting rod 2-7. A locking groove 2-13 is formed on the plate body of the connecting plate 2-12, and the locking groove 2-13 is located at one end of the connecting plate 2-12 near the locker 2-10.

[0033] The locking device 2-10 includes a fixing seat 2-14 fixedly disposed in the middle of the fixing rod 2-2. The fixing seat 2-14 is in the shape of a circular plate, and two locking hooks 2-15 are symmetrically disposed on the plate of the fixing seat 2-14. The middle part of the locking hook 2-15 is rotatably connected to the fixed base 2-14. Each locking hook 2-15 has a hook-shaped part at one end facing the auxiliary rod 2-3 and an operating part at the other end. A slope is provided at one corner of the operating part away from the hook-shaped part; An annular groove is provided on the plate of the fixing seat 2-14, and an elastic ring 2-16 is provided in the groove. The elastic ring 2-16 passes around two locking hooks 2-15.

[0034] The elastic element is preferably a rubber ring. The rubber ring is small in size and easy to install. The elastic element can keep the locking hook 2-15 in a constant state, and at the same time, it can also deform to a certain extent, which facilitates the separation of the locking hook 2-15 from the connector 2-9 later.

[0035] The unlocker 2-11 includes a slider 2-17 that is slidably disposed in the fixed rod 2-2. The slider 2-17 has an insertion hole at one end facing the locker 2-10. A slot 2-18 is opened on each side of the insertion hole, and each slot 2-18 corresponds to one of the locking hooks. A drive rod 2-19 is fixedly installed at the other end of the slider 2-17. A tension spring 2-20 is sleeved on the outside of the drive rod 2-19. One end of the tension spring 2-20 is fixedly connected to the slider 2-17, and the other end is fixedly connected to the fixed rod 2-2.

[0036] Each rotating shaft 2-1 is provided with an inner rod 2-21, which is fixedly mounted on the mounting bracket 1-2. Several protrusions 2-22 are arranged in an array on the side wall of the inner rod 2-21. Each protrusion 2-22 faces the middle of the grid 1-1 and corresponds to one of the fixed rods 2-2.

[0037] When the rotating shaft 2-1 rotates in the opposite direction until the fixed rod 2-2 is close to the middle position of the grid bar 1-1, one end of the drive rod 2-19 abuts against the boss 2-22. As the rotating shaft 2-1 continues to rotate, the drive rod 2-19, under the action of the boss 2-22, drives the slider 2-17 to move towards the locker 2-10. At this time, the two operating parts of the locking hook 2-15 are inserted into the slot 2-18. With the continued movement of the drive rod 2-19, the operating parts of the two locking hooks 2-15 move towards the middle of the slider 2-17 under the action of the slot 2-18. The hook-shaped parts of the two locking hooks 2-15 move in opposite directions. At this time, the hook-shaped parts separate from the locking groove 2-13 of the connector 2-9. The auxiliary rod 2-3 moves outward under the action of the spring 2-8, which facilitates the toggle fork 2-4 to move the dirt, garbage, etc. attached to the grid bar 1-1.

[0038] The actuating fork 2-4 includes a mounting tube 2-23 fixedly connected to the auxiliary rod 2-3. Several actuating forks 2-24 are fixedly installed on the side wall of the mounting tube 2-23, and the actuating forks 2-24 slide in the channel. A limiting protrusion 2-25 is fixedly installed at each end of the mounting tube 2-23.

[0039] The limiting protrusion 2-25 can, on the one hand, abut against the inner surface of the grid bar 1-1 when the auxiliary rod 2-3 extends, thereby restricting the position of the toggle fork 2-4. On the other hand, with the cooperation of the guide plate 1-3, the toggle fork 2-4 can drive the auxiliary rod 2-3 to move towards the fixed rod 2-2, so that the connecting piece 2-9 can engage with the locking device 2-10.

[0040] Guide plates 1-3 are fixedly installed at both ends of each grid bar 1-1. The guide plates 1-3 are located inside the grid bar 1-1, and the end of the guide plate 1-3 near the column 1 extends towards the middle of the grid bar 1-1.

[0041] The guide plate 1-3 can drive the actuating fork 2-4 to move toward the fixed rod 2-2, so that the locking hook 2-15 can be locked in the locking groove 2-13, and the locking device 2-10 can fix the connecting piece 2-9. When the rotating shaft 2-1 drives the actuating fork 2-4 to rotate in the opposite direction, the actuating fork 2-4 retracts into the inside of the grid bar 1-1. At this time, the actuating fork 2-4 will not move the dirt and garbage on the grid bar 1-1 during the movement, which can prevent a lot of dirt and garbage from accumulating in the middle of the grid bar 1-1. When the actuating fork 2-4 extends, the rotating shaft 2-1 rotates in the opposite direction. The actuating fork 2-4 can move the dirt on the bar 1-1 towards the middle of the bar 1-1. Under the action of water flow, the resistance when the actuating fork 2-4 moves is relatively large. When the actuating fork 2-4 is retracted into the bar 1-1, the actuating fork 2-4 will not come into contact with the dirt on the bar 1-1 when it moves, which can reduce the resistance of the rotating shaft 2-1.

[0042] The conveyor belt 3 includes a support fixedly mounted on the column 1. The support is L-shaped and the transmission belt is slidably connected to the surface of the support. Several lifting hooks are arrayed on the surface of the transmission belt.

[0043] A motor is fixedly installed on the upper part of the bracket, and the motor is used to drive the transmission belt to move.

[0044] When the fork 2-4 moves the dirt attached to the surface of the grid bar 1-1 to the conveyor belts 3 on both sides, the conveyor belts 3 can transfer the dirt to the upper end of the column 1. Furthermore, a horizontal conveyor line is set above the conveyor belt, and the dirt lifted by the conveyor belt 3 is transferred to the designated area through the horizontal conveyor line.

[0045] When using this invention, start the drive motor 2-6, which drives the two cleaning mechanisms 2 to rotate back and forth. The agitator fork 2-4 moves to both sides of the grid bar 1-1, and the dirt attached to the surface of the grid bar is moved to the conveyor belt 3 on both sides of the grid bar by the agitator fork 2-4. The conveyor belt can transfer waste to the upper end of the column 1. Furthermore, a horizontal conveyor line is set above the conveyor belt to transfer the waste lifted by the conveyor belt 3 to a designated area.

[0046] When the rotating shaft 2-1 drives the actuating fork 2-4 to rotate in the opposite direction, the actuating fork 2-4 retracts into the inside of the grid bar 1-1. At this time, the actuating fork 2-4 will not move the dirt and garbage on the grid bar 1-1 during the movement, which can prevent a lot of dirt and garbage from accumulating in the middle of the grid bar 1-1. Through the continuous movement of the cleaning mechanism 2, not only can the dirt on the trash rack be effectively cleaned, but the dirt on the underwater trash rack can also be cleaned. This device can automatically clean trash racks without stopping the machine, effectively improving the working efficiency of hydropower stations.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A reservoir debris barrier with self-cleaning function, characterized in that, It includes columns (1) fixedly installed on both sides of the reservoir gate, and several arc-shaped grid bars (1-1) between two columns (1). The grid bars (1-1) are set on the water-facing side of the columns (1), and a channel for water flow is formed between two adjacent grid bars (1-1). The upper and lower ends of the two columns (1) are fixedly connected by a mounting bracket (1-2), and two cleaning mechanisms (2) for cleaning the grid bars (1-1) are symmetrically arranged on the mounting bracket (1-2). Each of the columns (1) is also fixedly equipped with a waste transfer conveyor belt (3); The cleaning mechanism (2) includes two sets of cleaning units symmetrically arranged on the mounting frame (1-2). Each set of cleaning units includes a rotating shaft (2-1) rotatably arranged on the mounting frame (1-2). Several fixing rods (2-2) are fixedly arranged on the side wall of the rotating shaft (2-1), and each fixing rod (2-2) corresponds to one of the channels. The movable end of the fixed rod (2-2) is inserted into the auxiliary rod (2-3), and the movable end of the auxiliary rod (2-3) is fixedly provided with a toggle fork (2-4). Each of the rotating shafts (2-1) has a gear (2-5) fixedly mounted coaxially at its upper end. The two gears (2-5) mesh with each other. A drive motor (2-6) is fixedly mounted on one of the mounting brackets (1-2) above. The motor shaft of the drive motor (2-6) is fixedly coaxially with one of the rotating shafts (2-1). A connecting rod (2-7) is fixedly installed at one end of the auxiliary rod (2-3) away from the actuating fork (2-4). A spring (2-8) is sleeved on the connecting rod (2-7). One end of the spring (2-8) is fixedly connected to the auxiliary rod (2-3), and the other end is fixedly connected to the fixed rod (2-2). A connecting piece (2-9) is fixedly installed on the connecting rod (2-7). A locking device (2-10) is fixedly installed in the middle of the fixing rod (2-2). The locking device (2-10) is detachably connected to the connector (2-9). An unlocking device (2-11) is also slidably installed inside the fixing rod (2-2). The connector (2-9) includes a connecting plate (2-12) fixedly connected to the connecting rod (2-7). A locking groove (2-13) is formed on the plate body of the connecting plate (2-12). The locking groove (2-13) is located at one end of the connecting plate (2-12) near the locker (2-10). The locking device (2-10) includes a fixing seat (2-14) fixedly disposed in the middle of the fixing rod (2-2). The fixing seat (2-14) is in the shape of a circular plate, and two locking hooks (2-15) are symmetrically disposed on the plate of the fixing seat (2-14). The middle part of the locking hook (2-15) is rotatably connected to the fixed base (2-14). Each locking hook (2-15) has a hook-shaped part at one end facing the auxiliary rod (2-3) and an operating part at the other end. The plate of the fixing seat (2-14) has an annular groove, and an elastic ring (2-16) is provided in the groove. The elastic ring (2-16) passes around the two locking hooks (2-15). The unlocker (2-11) includes a slider (2-17) that is slidably disposed in the fixed rod (2-2). The slider (2-17) has a socket at one end facing the locker (2-10). A slot (2-18) is opened on each side of the socket, and each slot (2-18) corresponds to one of the locking hooks (2-15). The other end of the slider (2-17) is fixedly provided with a drive rod (2-19), and a tension spring (2-20) is sleeved on the outside of the drive rod (2-19). One end of the tension spring (2-20) is fixedly connected to the slider (2-17), and the other end is fixedly connected to the fixed rod (2-2). Each of the rotating shafts (2-1) is provided with an inner rod (2-21), and the inner rod (2-21) is fixedly mounted on the mounting bracket (1-2). Several protrusions (2-22) are arranged in an array on the side wall of the inner rod (2-21). Each protrusion (2-22) faces the middle of the grid bar (1-1), and each protrusion (2-22) corresponds to one of the fixed rods (2-2). The actuating fork (2-4) includes a mounting tube (2-23) fixedly connected to the auxiliary rod (2-3), and a plurality of forks (2-24) are fixedly arranged on the side wall of the mounting tube (2-23), and the forks (2-24) slide in the channel; A limiting protrusion (2-25) is fixedly provided at each of the two ends of the mounting tube (2-23); Guide plates (1-3) are fixedly installed at both ends of each of the grid bars (1-1). The guide plates (1-3) are located inside the grid bars (1-1), and the end of the guide plate (1-3) near the column (1) extends toward the middle of the grid bars (1-1).

2. The reservoir debris barrier with self-cleaning function according to claim 1, characterized in that, The conveyor belt (3) includes a bracket fixedly mounted on the column (1). The bracket is L-shaped and the surface of the bracket is slidably connected to the transmission belt. The surface of the transmission belt is arrayed with several lifting hooks.

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