Pump storage power station inlet and outlet water mouth trash rack

Abstract

The application discloses a water intake and outlet trash blocking device of pumped storage power station, which comprises a filter screen plate arranged in a flowable water environment, and a cleaning mechanism arranged on the side of the filter screen plate facing the water flow direction; the cleaning mechanism comprises a filter plate conveying belt mechanism arranged in parallel to the height direction of the filter screen plate, and the filter plate conveying belt mechanism is in transmission connection with a driving mechanism; a plurality of filter plates are arranged on the filter plate conveying belt mechanism, and one end of each filter plate, which is not connected with the filter plate conveying belt mechanism, is in abutment with the surface of the filter screen plate; the driving mechanism drives the filter plate to reciprocate in the direction tangent to the water flow direction through the filter plate conveying belt mechanism. The filter screen plate is cleaned through repeated scraping of the filter plate, so that the garbage filtered by the filter screen plate is prevented from remaining on the filter screen plate and affecting the filtering effect, and the garbage floating on the water surface can be taken away when the filter plate is turned over from the water, the garbage floating on the water surface is cleaned, and good cleaning effect is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power plant pollution cleaning equipment, and particularly relates to a trash blocking device for an intake and outlet of a pumped storage power station. BACKGROUND

[0002] The pumped storage power station uses electric energy at the valley of power load to pump water to an upper reservoir, and uses the water to generate power at the peak of power load, which is also called energy storage type hydropower station. The pumped storage power station can convert the excess electric energy at the valley of power load into high value electric energy at the peak of power load, and is suitable for frequency and phase modulation, and can stabilize the frequency and voltage of the power system, and can be used as an emergency backup, and can improve the efficiency of thermal power stations and nuclear power stations in the system.

[0003] The pumped storage power station is provided with an upper reservoir built at a high place and a lower reservoir built at a low place downstream of the power station. The unit of the pumped storage power station can function as a general water turbine to generate power and as a water pump to pump water from the lower reservoir to the upper reservoir. At the valley of power load, the unit of the pumped storage power station operates as a water pump to store water in the upper reservoir. At the peak of power load, the unit operates as a generator to generate power by using the water stored in the upper reservoir and sends the power to the power grid.

[0004] The lower reservoir generally stores water through a reservoir, and then pumps the water by a water pump. However, the lower reservoir is usually a natural river that accumulates dry branches and household garbage of tributaries, and a large amount of sundries will float on the surface of the reservoir. When the water pump of the upper reservoir starts to pump water in the reservoir, the garbage will enter the water turbine along the pipeline, which will affect the normal operation of the water pump turbine. In order to prevent garbage from entering the pipeline, a common protective measure is to install a trash screen in front of the pipeline to block the garbage through the filter screen. However, after the filter screen is used for a period of time, a large amount of garbage will be blocked in front of the filter screen, which will adversely affect the filtering effect of the filter screen. Therefore, a salvage mechanism is needed to salvage the garbage. A common salvage mechanism is a salvage ship that sails on the water surface and collects garbage during sailing. However, in order to control the salvage cost, the salvage ship is usually used for salvage work after a certain amount of garbage accumulates on the water surface. However, at this time, the garbage on the water surface has already affected the filtering effect of the filter screen, which will also affect the normal operation of the subsequent pumped storage work.

[0005] The Chinese patent with publication number CN218757351U discloses a high-efficiency water conservancy project trash barrier, which comprises a fixed frame, a protective net fixedly installed in the fixed frame, connecting plates fixedly connected to the two sides of the fixed frame, a lifting frame slidingly connected between the two connecting plates, a cleaning brush fixedly connected to the lifting frame, a scraper provided in the lifting frame and slidingly in contact with the connecting plates, a driving rod slidingly in contact with the lifting frame, and a power mechanism connected to one end of the driving rod. The power mechanism drives the driving rod to rotate, and the driving rod drives the lifting frame to reciprocate up and down. When the lifting frame rises, the cleaning brush removes the garbage intercepted by the protective net, and is pulled upward by the lifting frame. The scraper moves to one side of the fixed frame through the cooperation of the sliding rod and the sliding groove, and the garbage in the lifting frame is scraped into the collecting frame. The barrier effect is good, and the utility is high.

[0006] The above-mentioned patent discloses a technical solution for cleaning the garbage intercepted by the protective net by using the scraper. However, the garbage will remain on the scraper in the solution, and the scraper cannot be cleaned, which will undoubtedly affect the cleaning effect of the protective net. SUMMARY

[0007] The technical problem to be solved by the present application is to provide a trash barrier for the inlet and outlet of a pumped storage power station, which has good trash cleaning effect.

[0008] To solve the above-mentioned technical problem, the technical solution adopted by the present application is: a trash barrier for the inlet and outlet of a pumped storage power station, which comprises a filter screen plate arranged in a flowable water environment, and a cleaning mechanism arranged on the side of the filter screen plate facing the water flow direction. The cleaning mechanism comprises a filter plate conveying belt mechanism arranged in parallel to the height direction of the filter screen plate, and the filter plate conveying belt mechanism is drivingly connected with a driving mechanism. A plurality of filter plates are arranged on the filter plate conveying belt mechanism, and one end of each filter plate not connected with the filter plate conveying belt mechanism is in abutment with the surface of the filter screen plate. The driving mechanism drives the filter plate to reciprocate in a direction tangent to the water flow direction through the filter plate conveying belt mechanism. The filter plate conveying belt mechanism drives the filter plate to reciprocate, and the filter plate contacts the surface of the filter screen plate during the movement to scrape away the garbage accumulated on the filter screen plate. The filter screen plate is cleaned by the repeated scraping of the filter plate, so as to avoid the garbage filtered by the filter screen plate remaining on the filter screen plate and affecting the filtering effect. When the filter plate is turned over from the water, the garbage floating on the water surface can be removed, the garbage floating on the water surface is cleaned, and good trash cleaning effect is achieved.

[0009] As the improvement of the above scheme: further comprising rotating part, the filter plate is installed on the filter plate conveying belt mechanism through rotating part on both sides respectively; the rotating part is composed of fixed seat, rotating shaft, limiting plate and limiting protrusion, the rotating shaft is rotatably arranged on the fixed seat, the filter plate is fixedly connected with the rotating shaft, the limiting plate is fixed on the rotating shaft, and the limiting protrusion is fixed on the fixed seat and located on the rotating path of the limiting plate to form limiting to the rotating range of the limiting plate. The limiting plate and the limiting protrusion in the rotating part are matched to realize the limiting of the filter plate installed on the rotating shaft, so that the filter plate can keep a stable state during the movement of the filter plate conveying belt mechanism, continuously scrape the garbage on the filter screen plate, and will not be inclined due to the resistance of the filter screen plate and the garbage.

[0010] As the improvement of the above scheme: the fixed seat is provided with a circular hole, the limiting protrusion is a right-angle sector protrusion structure arranged in the circular hole, the limiting plate extends into the circular hole and forms limiting cooperation with the limiting protrusion; when the limiting plate is in contact with one of the right-angle surfaces of the limiting protrusion, the filter plate is perpendicular to the filter screen plate, and when the limiting plate is in contact with the other right-angle surface of the limiting protrusion, the filter plate is parallel to the filter screen plate. The specific structure of the limiting protrusion and the corresponding mounting structure are optimized, so that the filter plate moves with the filter plate conveying belt mechanism at a specific angle under the limiting action of the limiting protrusion, the two right-angle surfaces of the limiting protrusion limit the filter plate at different time periods of the movement of the filter plate, when the filter plate moves upward with the filter plate conveying belt mechanism and scrapes the garbage on the filter screen plate, the filter plate keeps a stable horizontal state and forms perpendicular cooperation with the filter screen plate, the garbage hung on the filter plate can move with the horizontal filter plate on the filter plate, and the garbage will not slide off due to the inclination of the filter plate.

[0011] As the improvement of the above scheme: further comprising a cleaning mechanism, the cleaning mechanism comprises a mounting seat, a vertical plate and a movable plate; the mounting seat is arranged on the side of the cleaning mechanism away from the filter plate, two vertical plates are fixed on the mounting seat and located on both sides of the movement path of the filter plate, a plurality of movable plates are connected on the opposite surfaces of the two vertical plates through springs, and the movable plates on the two vertical plates are staggered, and the filter plate is in contact with the movable plates when passing between the two vertical plates; the rotating part is installed on the filter plate conveying belt mechanism through a fixing sleeve, the fixing sleeve is a rectangular sleeve frame, and the fixing seat of the rotating part is a rectangular structure movably arranged in the fixing sleeve.The cleaning mechanism is arranged to clean the filter plate, the movable plates on the cleaning mechanism impact the filter plate, the filter plate is shaken multiple times during the downward movement of the filter plate along the filter plate conveying belt mechanism, so that the garbage on the filter plate is shaken off and does not remain on the filter plate, ensuring the cleanliness of the filter plate; meanwhile, the fixing sleeve cooperates with the movable plate, the fixing sleeve limits the rotating part to move only in the inner ring of the fixing sleeve, so as to limit the shaking range of the filter plate and avoid excessive shaking or falling off the cleaning mechanism.

[0012] As the improvement of the above scheme: the movable plate is fixed on the vertical plate through a mounting plate corresponding to the movable plate, the mounting plates are arranged on the opposite surfaces of the two vertical plates in a staggered manner, and the springs are vertically fixed on the mounting plates; further comprising a limiting block fixed on the mounting plate, and the limiting block and the end of the movable plate close to the vertical plate form a limiting cooperation.The mounting plate is arranged to install the spring and the movable plate, the spring can be kept in a vertical installation state through the mounting plate, the force direction of the filter plate is stable when the movable plate contacts the filter plate and exerts force on each other, and a stable upward rebound force is provided after the movable plate is not subjected to the force of the filter plate, so that the movable plate is quickly returned; the limiting block is arranged to limit the movement range of the movable plate after being subjected to force, the limiting block limits the end of the movable plate not in contact with the filter plate, so as to ensure that the movable plate remains in a horizontal state after not being subjected to the force of the filter plate, and also to avoid excessive swinging of the movable plate after being subjected to the reaction force of the filter plate, reduce the angle of swinging of the movable plate and weaken the force of swinging of the movable plate.

[0013] As the improvement of the above scheme: further comprising a scraper fixed on the mounting seat, the scraper is a beveled scraper or an arc scraper.The scraper is arranged to further clean the filter plate, the filter plate contacts the scraper during the movement along the filter plate conveying belt mechanism after being cleaned by the cleaning mechanism, and the scraper scrapes off the garbage remaining on the filter plate, so as to further ensure the cleanliness of the filter plate.

[0014] As an improvement of the above scheme: further comprising a garbage conveying mechanism arranged below the cleaning mechanism, and a conveying belt arranged on the garbage conveying mechanism and in abutment with the bottom of the cleaning mechanism.

[0015] As an improvement of the above scheme: the driving mechanism is a water-driven mechanism, and the driving mechanism comprises an impeller, a chain conveying mechanism and a worm and gear transmission mechanism, the impeller is in transmission cooperation with one end of the chain conveying mechanism through the worm end of the worm and gear transmission mechanism, the other end of the chain conveying mechanism is in transmission cooperation with the filter plate conveying belt mechanism, and the worm end of the worm and gear transmission mechanism is in transmission cooperation with the garbage conveying mechanism.

[0016] As an improvement of the above scheme: the driving mechanism further comprises a protective mesh shell, and the impeller is arranged in the protective mesh shell.

[0017] As an improvement of the above scheme: the cleaning mechanism is fixed on the filter screen plate through the connecting plate, and the filter screen plate is further fixed with a positioning plate and a fixing plate.

[0018] The present application has the advantages that: the filter plate conveying belt mechanism drives the filter plate to make reciprocating lifting movement, and the filter plate contacts the surface of the filter screen plate during the movement to scrape away the garbage accumulated on the filter screen plate, and the filter screen plate is cleaned through repeated scraping of the filter plate, so that the garbage filtered by the filter screen plate is prevented from remaining on the filter screen plate to affect the filtering effect, and the garbage floating on the water surface can be taken away when the filter plate is turned over from the water, the garbage floating on the water surface is cleaned, and good cleaning effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The figure is a structural schematic diagram of the present application.

[0020] Figure 2It is a structural schematic diagram of the cleaning mechanism in the application;

[0021] Figure 3 It is a structural schematic diagram when the filter screen plate is not provided in the application;

[0022] Figure 4 It is a structural schematic diagram of the cleaning mechanism in the application;

[0023] Figure 5 It is a structural schematic diagram of the rotating part in the application;

[0024] Figure 6 It is a structural schematic diagram of the installation of the filter screen plate in the application.

[0025] In the figure, 100 is the filter screen plate, 200 is the cleaning mechanism, 210 is the filter plate conveying belt mechanism, 220 is the filter plate, 230 is the fixed sleeve, 300 is the driving mechanism, 310 is the impeller, 320 is the chain conveying mechanism, 330 is the worm and gear transmission mechanism, 400 is the rotating part, 410 is the fixed seat, 420 is the rotating shaft, 430 is the limiting plate, 440 is the limiting protrusion, 500 is the cleaning mechanism, 510 is the mounting seat, 520 is the vertical plate, 530 is the movable plate, 540 is the spring, 550 is the mounting plate, 560 is the limiting block, 570 is the scraper, 600 is the garbage conveying mechanism, 710 is the connecting plate, 720 is the positioning plate, and 730 is the fixed plate. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the application, the application will be further described below in combination with the drawings.

[0027] In the description of the application, it should be noted that the terms "front", "back", "left", "right", "up", "down", "in", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of description, and do not indicate or imply that the devices or components referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0028] As Figure 1 shown, the disclosed trash blocking device for the inlet and outlet of the pumped storage power station includes a filter screen plate 100 and a cleaning mechanism 200, the filter screen plate 100 is used for filtering the water flow in the flowable water environment, and the cleaning mechanism 200 is used for cleaning the garbage blocked by the filter screen plate 100 and the garbage floating on the water surface. The application can be used in conventional water conservancy projects, and can also be used in the inlet and outlet of the pumped storage power station to filter and block the trash before the water flow enters the inlet and outlet pipeline of the pumped storage power station.

[0029] Specifically, the cleaning mechanism 200 is arranged on the side of the filter screen plate 100 facing the water flow, and the cleaning mechanism 200 comprises a plurality of filter plates 220 arranged on a filter plate conveying belt mechanism 210 and the filter plate conveying belt mechanism 210 driving the filter plate 220 to move. As shown in Figure 1 and Figure 2 The filter plate conveying belt mechanism 210 in the cleaning mechanism 200 is provided with a conveying belt, and the filter plate conveying belt mechanism 210 is parallel to the filter screen plate 100, that is, the filter plate conveying belt mechanism 210 is tangent to the water flow direction. When the conveying belt on the filter plate conveying belt mechanism 210 operates, the filter plate 220 moves together, which is embodied as the filter plate 220 reciprocatingly rising and falling in the vertical direction. One end of the filter plate 220 not connected with the filter plate conveying belt mechanism 210 abuts against the surface of the filter screen plate 100. In the process of the plurality of filter plates 220 continuously rising with the filter plate conveying belt mechanism 210, the one end of the filter plate 220 scrapes on the surface of the filter screen plate 100, and the filter plate 220 scrapes off the garbage remaining on the filter screen plate 100 and carries away the garbage, so as to avoid the mesh of the filter screen plate 100 being blocked by the remaining garbage. When the filter plate 220 is turned over from the water, the filter plate 220 also carries away the garbage floating on the water surface. When the filter plate 220 rises to the top of the filter plate conveying belt mechanism 210, the filter plate 220 is turned over and the garbage on the filter plate 220 is unloaded. The filter plate 220 is driven by the filter plate conveying belt mechanism 210 to descend and re-enter the water and enter the next cleaning work.

[0030] In the present application, the rotating part 400 is arranged to limit the filter plate 220 to ensure that the filter plate 220 remains stable during the process of scraping off the garbage. As shown in Figure 2 and Figure 5As shown, two sides of each filter plate 220 are respectively installed on the filter plate conveying belt mechanism 210 through the rotating component 400; the rotating component 400 is composed of a fixing base 410, a rotating shaft 420, a limiting plate 430 and a limiting protrusion 440, the fixing base 410 serves as the installation base of the rotating shaft 420, the limiting plate 430 and the limiting protrusion 440, the rotating shaft 420 is rotatably installed on the fixing base 410 and is fixedly connected with the filter plate 220 and the limiting plate 430, so that the filter plate 220 and the fixing base 410 and the limiting plate 430 and the fixing base 410 are rotatably connected in synchronous motion, the limiting protrusion 440 is fixed on the fixing base 410 and located on the rotating path of the limiting plate 430, so that when the limiting plate 430 rotates to contact the limiting protrusion 440, the limiting protrusion 440 prevents the limiting plate 430 from continuing to rotate, and correspondingly, the filter plate 220 moving synchronously with the limiting plate 430 also stops rotating, thereby limiting the filter plate 220, and the rotating range of the filter plate 220 can be limited by adjusting the specific setting position of the limiting protrusion 440. Further, in the present application, in order to ensure that the filter plate 220 maintains a horizontal state during the rising process, that is, the filter plate 220 and the filter screen plate 100 present a perpendicular relationship with each other, so that the garbage scraped by the filter plate 220 can stay on the filter plate 220 and will not slide down due to the inclination of the filter plate 220, and then the structure of the rotating component 400 is optimized, a circular hole is arranged in the fixing base 410, the limiting protrusion 440 is arranged as a right-angle sector structure concentric with the circular hole in the circular hole, and the limiting plate 430 extends into the circular hole and forms a limiting fit with the limiting protrusion 440; when one of the right-angle surfaces of the limiting plate 430 and the limiting protrusion 440 is in contact, the filter plate 220 is perpendicular to the filter screen plate 100, and when the other right-angle surface of the limiting plate 430 and the limiting protrusion 440 is in contact, the filter plate 220 is parallel to the filter screen plate 100.

[0031] After the filter plate 220 scrapes garbage and performs the cleaning work, gravity alone is insufficient to remove all the garbage adhered to the filter plate 220, and the filter plate 220 itself may also have garbage residues, therefore the present application further provides the cleaning mechanism 500 for cleaning the filter plate 220. Figure 1 、 Figure 3 and Figure 4As shown, the cleaning mechanism 500 is arranged on the side of the cleaning mechanism 200 away from the filter screen plate 100, that is, the cleaning mechanism 500 cleans the filter screen plate 220 during the descending process of the filter screen plate 220. The cleaning mechanism 500 comprises a mounting base 510, vertical plates 520 and movable plates 530. Two vertical plates 520 are vertically fixed on the two sides of the mounting base 510 and are parallel to each other. A plurality of movable plates 530 are arranged on the opposite sides of the two vertical plates 520 along the height direction of the vertical plates 520. The movable plates 530 are connected to the corresponding vertical plates 520 by springs 540. The movable plates 530 on the two vertical plates 520 are staggered. When the filter screen plate 220 descends with the filter screen plate conveying belt mechanism 210, one side of the filter screen plate 220 first contacts the movable plate 530 at the highest point and is impacted. The end of the filter screen plate 220 is lifted by the movable plate 530 and the filter screen plate 220 is inclined. Then the movable plate 530 is compressed by the spring 540 under the pressure of the filter screen plate 220 and the movable plate 530 is inclined and the end of the filter screen plate 220 falls. Since the movable plates 530 on the two vertical plates 520 are staggered, the other end of the filter screen plate 220 then contacts the other movable plate 530 at a lower height and is impacted. Thus, the filter screen plate 220 is impacted and vibrated by the movable plates 530 during the descending process, so that the garbage adhered to the filter screen plate 220 is shaken off. Figure 4 As shown, each movable plate 530 corresponds to one mounting plate 550. The mounting plate 550 is horizontally arranged and fixed on the vertical plate 520. The spring 540 is vertically fixed on the mounting plate 550. The movable plate 530 is horizontally arranged and fixed on the spring 540. The limiting block 560 is fixed on the mounting plate 550 and forms a limiting fit with the end of the movable plate 530 close to the vertical plate 520. Thus, when the movable plate 530 is swung by the rebound force of the spring 540, the limiting block 560 can limit the swing range of the movable plate 530, so that the movable plate 530 can be quickly reset.

[0032] The rotating parts 400 at the two ends of the filter screen plate 220 are installed on the filter screen plate conveying belt mechanism 210 through the fixing sleeve 230, so that the filter screen plate 220 is movably connected to the filter screen plate conveying belt mechanism 210, ensuring that the filter screen plate 220 can reciprocatingly move up and down under the driving of the filter screen plate conveying belt mechanism 210 and can vibrate under the action of the cleaning mechanism 500. Figure 2As shown, the fixing sleeve 230 adopts a rectangular sleeve frame structure, and the fixing seat 410 of the rotating component 400 adopts a rectangular structure matched with the inner ring of the fixing sleeve 230, so that the rotating component 400 can move in the fixing sleeve 230. When the filter plate 220 rises along with the filter plate conveying belt mechanism 210, the rotating component 400 is at the lower end of the fixing sleeve 230 and keeps a horizontal state under the limiting action of the limiting protrusion 440, and when the filter plate 220 rises to the highest of the filter plate conveying belt mechanism 210, the fixing sleeve 230 is overturned, and after the filter plate 220 is vibrated and cleaned by the cleaning mechanism 500, the filter plate 220 then slides to the lower end of the overturned fixing sleeve 230 under the action of its own gravity, and at this time, the filter plate 220 is no longer limited by the limiting protrusion 440 and is overturned to a vertical state under the action of its own gravity. During the process of the filter plate 220 being vertically lowered, a scraper 570 can be further arranged to clean the filter plate 220; as shown in Figure 3 and Figure 4 As shown, the scraper 570 is fixed on the mounting seat 510 of the cleaning mechanism 500 and is in contact with the surface of the filter plate 220 in a vertical state, so that during the descending movement of the filter plate 220, the scraper 570 scrapes off the garbage adhered to the surface of the filter plate 220; the scraper 570 can adopt an inclined surface or an arc surface to facilitate the garbage scraped off from the scraper 570 to slide off.

[0033] In the present application, a garbage conveying mechanism 600 is arranged to collect and convey the garbage scraped off by the filter plate 220 and the scraper 570, as shown in Figure 1 and Figure 3 As shown, the garbage conveying mechanism 600 is arranged below the cleaning mechanism 500, and the garbage conveying mechanism 600 conveys the garbage through a conveying belt, the conveying belt is connected to the bottom of the cleaning mechanism 500, and the garbage scraped off by the filter plate 220 and the scraper 570 directly falls on the conveying belt of the garbage conveying mechanism 600, and the garbage conveying mechanism 600 conveys the garbage to the garbage collecting mechanism on the bank.

[0034] In the present application, the working of the conveying belts on the filter plate conveying belt mechanism 210 and the garbage conveying mechanism 600 can be driven by a motor, but the motor driving needs to be configured with additional circuits and control systems, and needs to be monitored by workers, which undoubtedly increases the cost and has the risk of electric leakage or short circuit caused by sealing problems. In combination with the working environment of the water intake and outlet trash blocking device of the pumped storage power station, a water-driven mode is adopted to provide driving power for the filter plate conveying belt mechanism 210 and the garbage conveying mechanism 600, as shown in Figure 1 and Figure 3As shown, the driving mechanism 300 used is a waterway driving mechanism, which is composed of an impeller 310, a chain conveying mechanism 320 and a worm gear transmission mechanism 330. The impeller 310 is in driving cooperation with one end of the chain conveying mechanism 320 through the worm end of the worm gear transmission mechanism 330, the other end of the chain conveying mechanism 320 is in driving cooperation with the filter plate conveying belt mechanism 210, and the worm gear end of the worm gear transmission mechanism 330 is in driving cooperation with the garbage conveying mechanism 600. The impeller 310 rotates under the impact of water flow, and in turn drives the worm end of the worm gear transmission mechanism 330 connected with the impeller 310 to rotate. The worm end rotates at the same time to drive the chain conveying mechanism 320 and the worm gear end in the worm gear transmission mechanism 330 to rotate, and in turn finally drives the plate conveying belt mechanism 210 to work through the chain conveying mechanism 320, and drives the garbage conveying mechanism 600 to work through the worm gear end in the worm gear transmission mechanism 330.

[0035] Further, a protective mesh shell can be further arranged outside the impeller 310, which is made of high-strength metal material. The protective mesh shell protects the impeller 310 from garbage stirring into the impeller 310, and at the same time does not affect the flushing of the water to the impeller 310.

[0036] As shown in Figure 1 and Figure 6 In the present application, the cleaning structure 200 is fixed on the filter screen plate 100 by a connecting plate 710, and the filter screen plate 100 is extended to the shore and fixedly connected with the shore by a structure composed of a positioning plate 720 and a fixed plate 730.

Claims

1. A trash rack for an intake or outlet of a pumped storage power plant, comprising a filter screen (100) arranged in a flowable water environment, characterized in that: The cleaning mechanism (200) is arranged on the side of the filter screen plate (100) facing the water flow, and comprises a filter plate conveying belt mechanism (210) arranged in parallel to the height direction of the filter screen plate (100), wherein the filter plate conveying belt mechanism (210) is in transmission connection with a driving mechanism (300); a plurality of filter plates (220) are arranged on the filter plate conveying belt mechanism (210), and one end of the filter plate (220) not connected with the filter plate conveying belt mechanism (210) is in abutment with the surface of the filter screen plate (100); the driving mechanism (300) drives the filter plate (220) to reciprocate in a direction tangent to the water flow direction through the filter plate conveying belt mechanism (210), and one end of the filter plate (220) scrapes the surface of the filter screen plate (100) during the ascending movement of the filter plate (220) along the filter plate conveying belt mechanism (210); The filter plate (220) is installed on the filter plate conveying belt mechanism (210) through rotating components (400) arranged on both sides of the filter plate (220); the rotating component (400) comprises a fixed seat (410), a rotating shaft (420), a limiting plate (430) and a limiting protrusion (440), the rotating shaft (420) is rotatably arranged on the fixed seat (410), the filter plate (220) is fixedly connected with the rotating shaft (420), the limiting plate (430) is fixed on the rotating shaft (420), and the limiting protrusion (440) is fixed on the fixed seat (410) and located on the rotating path of the limiting plate (430) to limit the rotating range of the limiting plate (430); the fixed seat (410) is provided with a circular hole, the limiting protrusion (440) is a right-angle sector protrusion structure arranged in the circular hole, the limiting plate (430) extends into the circular hole and forms a limiting fit with the limiting protrusion (440); when one of the right-angle surfaces of the limiting plate (430) and the limiting protrusion (440) is in contact, the filter plate (220) is perpendicular to the filter screen plate (100), and when the other right-angle surface of the limiting plate (430) and the limiting protrusion (440) is in contact, the filter plate (220) is parallel to the filter screen plate (100). The cleaning mechanism (500) comprises a mounting base (510), vertical plates (520) and movable plates (530); the mounting base (510) is arranged on the side of the cleaning mechanism (200) away from the filter screen plate (100), two vertical plates (520) are fixed on the mounting base (510) and located on the two sides of the movement path of the filter plate (220), and a plurality of movable plates (530) are connected to the opposite surfaces of the two vertical plates (520) through springs (540), the movable plates (530) on the two vertical plates (520) are arranged alternately, and the filter plate (220) is in contact with the movable plates (530) when passing between the two vertical plates (520); the rotating part (400) is installed on the filter plate conveying belt mechanism (210) through a fixing sleeve (230), the fixing sleeve (230) is a rectangular sleeve frame structure, and the fixing seat (410) of the rotating part (400) is a rectangular structure movably arranged in the fixing sleeve (230); the cleaning mechanism (500) further comprises a scraper (570) fixed on the mounting base (510), and the scraper (570) is a bevel scraper or an arc scraper.

2. The trash rack of pumped storage power station according to claim 1, characterized in that: The movable plates (530) are fixed on the vertical plates (520) through mounting plates (550) corresponding to the movable plates (530) one by one, the mounting plates (550) are arranged alternately on the opposite surfaces of the two vertical plates (520), and the springs (540) are vertically fixed on the mounting plates (550); the cleaning mechanism (500) further comprises limiting blocks (560) fixed on the mounting plates (550), and the limiting blocks (560) are in limiting cooperation with one end of the movable plates (530) close to the vertical plates (520).

3. The trash rack of pumped storage power station according to claim 1, characterized in that: The garbage conveying mechanism (600) is arranged below the cleaning mechanism (500), and the garbage conveying mechanism (600) is provided with a conveying belt in abutment with the bottom of the cleaning mechanism (500).

4. The trash rack of pumped storage power station according to claim 3, wherein: The driving mechanism (300) is a hydraulic driving mechanism, and the driving mechanism (300) comprises an impeller (310), a chain conveying mechanism (320) and a worm and gear transmission mechanism (330), the impeller (310) is in transmission cooperation with one end of the chain conveying mechanism (320) through the worm end of the worm and gear transmission mechanism (330), the other end of the chain conveying mechanism (320) is in transmission cooperation with the filter plate conveying belt mechanism (210), and the worm end of the worm and gear transmission mechanism (330) is in transmission cooperation with the garbage conveying mechanism (600).

5. The trash rack of pumped storage power station according to claim 4, wherein: The driving mechanism (300) further comprises a protective mesh shell, and the impeller (310) is arranged in the protective mesh shell.

6. The trash rack of pumped storage power plant according to claim 1, wherein: The cleaning mechanism (200) is fixed on the filter screen plate (100) through a connecting plate (710), and the filter screen plate (100) is further provided with a positioning plate (720) and a fixed plate (730).

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