A stain filtering structure for pumped storage power stations

Abstract

The application provides a stain filtering structure for pumped storage power station, relates to the technical field of filtering device technology, and comprises a bottom shell, a drain pipe is arranged on the outer side of the bottom of the bottom shell, a water inlet cylinder is fixedly installed on the top of the bottom shell, a water inlet pipe is arranged on the outer side of the water inlet cylinder, an inner cylinder is arranged in the water inlet cylinder, a lower pipe body is arranged at the bottom of the inner cylinder, the lower pipe body is communicated with the bottom shell, a plurality of filter holes are formed in the outer cylinder wall surrounding the inner cylinder, a tamping mechanism for tamping the filter holes in a blocked state is arranged in the inner cylinder; a carrier ring is fixedly sleeved at the bottom of the inner cylinder, a piston sleeve is fixedly sleeved on the outer ring surface of the carrier ring, the piston sleeve is connected with the inner wall of the water inlet cylinder, a water storage cavity is arranged between the top surface of the carrier ring and the inner wall of the water inlet cylinder, a spiral conveying mechanism is arranged in the water storage cavity, and the setting height of the spiral conveying mechanism is greater than the setting height of the water inlet cylinder. The application realizes the daily automatic maintenance of the filtering structure by arranging the tamping mechanism and the spiral conveying mechanism.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of filtering devices, in particular to a stain filtering structure for a pumped storage power station. BACKGROUND

[0002] The pumped storage power station is a special form of hydroelectric power station, which has upper and lower reservoirs. During the low valley period of power load, the pumped storage power station uses the excess power of the power grid to pump the water in the lower reservoir to the upper reservoir to accumulate potential energy. During the peak period of power load, the water in the upper reservoir is discharged to generate power, and the water flows to the lower reservoir.

[0003] The pumped storage power station generally needs to be provided with a stain filtering structure for filtering out sundries such as leaves and sand in the water, so as to ensure the cleanliness of the water flow in the power station and prevent the sundries from damaging the equipment in the power station. The prior art, such as the existing patent document CN115957553B, can achieve filtering, but after long-term filtering, the filter holes may be blocked, such as sand being stuck in the filter holes, thereby affecting the filtering effect. It is difficult to dredge the filter holes through the scouring and cleaning of the water flow. SUMMARY

[0004] The application provides a stain filtering structure for a pumped storage power station, which aims to at least solve the technical problems existing in the prior art mentioned in the background.

[0005] The application provides the following technical solutions to achieve the above-mentioned purposes:

[0006] The application provides a stain filtering structure for a pumped storage power station, which includes a bottom shell, a drain pipe is arranged on the outer side of the bottom of the bottom shell, a water inlet cylinder is fixedly installed on the top of the bottom shell, a water inlet pipe is arranged on the outer side of the water inlet cylinder, an inner cylinder is arranged in the water inlet cylinder, a lower pipe body is arranged at the bottom of the inner cylinder, the lower pipe body is communicated with the bottom shell, a plurality of filter holes are arranged on the outer cylinder wall surrounding the inner cylinder, a dredging mechanism for dredging the filter holes in the blocked state is arranged in the inner cylinder; a carrier ring is fixedly sleeved on the bottom of the inner cylinder, a piston sleeve is fixedly sleeved on the outer ring surface of the carrier ring, the piston sleeve is connected with the inner wall of the water inlet cylinder, a water storage cavity is arranged between the top surface of the carrier ring and the inner wall of the water inlet cylinder, a spiral conveying mechanism is arranged in the water storage cavity, and the setting height of the spiral conveying mechanism is greater than the setting height of the water inlet cylinder.

[0007] Further, the dredging mechanism includes a vertical rod arranged on the axis of the inner cylinder, the vertical rod is fixedly connected with the inner wall of the bottom of the bottom shell through the lower pipe body, a plurality of conical face covers are uniformly and spacedly arranged on the vertical rod in the height direction, the conical face cover includes a conical surface and a cylindrical surface, and a plurality of elastic push rods are arranged on the conical surface surrounding the conical face cover.

[0008] Further, the elastic push rod comprises an inclined surface block connected with the conical cover, a ramming rod is arranged at the end of the inclined surface block away from the conical cover, the ramming rod is arranged in matching with the filter hole, a sliding block is arranged on the ramming rod, the sliding block is in sliding connection with a sliding rail, the sliding rail is fixedly connected to the inner side of the inner cylinder, a third spring is arranged in the sliding rail, one end of the third spring is connected with the sliding rail, and the other end of the third spring is connected with the inner cylinder.

[0009] Further, the lower pipe body is circumferentially provided with a plurality of first springs, one end of the first spring is connected with the inner cylinder, the other end of the first spring is connected with the water inlet cylinder, a plurality of electromagnets are circumferentially arranged on the same side of the water inlet cylinder connected with the first spring, and a displacement sensor is fixedly arranged at the bottom of the inner side of the water inlet cylinder.

[0010] Further, the spiral conveying mechanism comprises a rotating cylinder rotatably sleeved at the top end of the inner cylinder, a spiral blade is arranged around the rotating cylinder and the inner cylinder, and the spiral blade is fixedly connected with the rotating cylinder, and a driving assembly is arranged in the rotating cylinder; the inner side of the inner cylinder is provided with a connecting rod, the connecting rod, the rotating cylinder and the inner cylinder are coaxially arranged, a plug rod is arranged at the top end of the connecting rod, a pressure head is arranged at the top end of the plug rod, the pressure head is matchedly connected in a through hole in the center of the top of the rotating cylinder, and the plug rod is elastically connected with the connecting rod through a second spring.

[0011] Further, the driving assembly comprises an inner gear ring arranged in the rotating cylinder, the inner gear ring is in meshing connection with a second cylindrical gear, the second cylindrical gear is arranged on the bottom surface of the inner side of the partition cover, the partition cover is fixedly connected with the inner cylinder through a support rod, a second rotating shaft is arranged in the center of the second cylindrical gear, a second bevel gear is arranged on the second rotating shaft, the second bevel gear is in meshing connection with a first bevel gear, a first rotating shaft is arranged in the center of the first bevel gear, a first cylindrical gear is arranged on the side of the first rotating shaft away from the first bevel gear, the first cylindrical gear is in meshing connection with a rack, the rack is connected with one end of a connecting plate through a groove, the other end of the connecting plate is connected with a vertical rod, and the first rotating shaft and the second rotating shaft are rotatably arranged on the inner side of the rotating cylinder.

[0012] Further, a guide hole is arranged on the contact surface between the second cylindrical gear and the second rotating shaft, a fourth spring is arranged in the guide hole, the fourth spring is connected with a ball head rod, the spherical end of the ball head rod is arranged towards the second rotating shaft, an arc surface groove matched with the ball head rod is arranged on the second rotating shaft, and a plane and an arc surface are arranged on the inner side of the arc surface groove.

[0013] Further, an electric control valve is arranged on the water inlet pipe, the electric control valve is in electrical connection with a control cabinet, and the control cabinet is in electrical connection with the displacement sensor and the electromagnet.

[0014] Further, a material guide cover is arranged at the top end of the water inlet cylinder, and the top of the material guide cover is conically arranged.

[0015] Furthermore, a rubber strip is fixedly installed along the length of the contact position between the spiral blade and the outer wall of the inner cylinder, and a fifth spring in a compressed state is provided inside the rubber strip.

[0016] Beneficial effects

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The proposed dirt filtration structure for pumped-storage power stations utilizes a tamping mechanism to effectively clear blockages in the filter pores, pushing the obstructions into the water storage chamber. This process significantly improves the patency of the filter pores. Furthermore, by adding a screw conveyor mechanism, after the filter pores are cleared, the sediment in the water storage chamber is discharged via the screw conveyor, thus completing the internal cleaning process. By combining the functions of the tamping mechanism and the screw conveyor mechanism, the filter structure achieves automated daily maintenance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0020] Figure 1 This is a schematic diagram of the overall external structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall internal structure of the present invention;

[0022] Figure 3 For the present invention Figure 2 Enlarged structural diagram of section A in the middle;

[0023] Figure 4 For the present invention Figure 2 Enlarged structural diagram of section B in the middle;

[0024] Figure 5 This is a schematic diagram of the structure of the present invention, showing the distribution of the elastic push rods around the conical cover and the distribution of the filter holes on the inner cylinder;

[0025] Figure 6 This is a schematic diagram of the internal toothed ring and the interior of the diaphragm of the present invention;

[0026] Figure 7 This is a schematic diagram of the cross-sectional structure between the second rotating shaft and the second cylindrical gear of the present invention;

[0027] Figure 8Structure diagram of the arc surface groove and the ball head rod of the application;

[0028] Figure 9 Structure diagram of the rubber strip and the fifth spring of the application;

[0029] Reference signs: 1 - bottom shell; 2 - water inlet cylinder; 3 - rotating cylinder; 4 - spiral blade; 5 - rubber strip; 6 - material guide cover; 7 - water inlet pipe; 8 - electric control valve; 9 - drain pipe; 10 - control cabinet; 11 - inner cylinder; 12 - filter hole; 13 - carrier ring; 14 - piston sleeve; 15 - first spring; 16 - electromagnet; 17 - lower pipe body; 18 - displacement sensor; 19 - vertical rod; 20 - conical cover; 2001 - conical surface; 2002 - cylindrical surface; 21 - inclined surface block; 22 - connecting plate; 23 - rack; 24 - partition cover; 25 - inner tooth ring; 26 - connecting rod; 27 - second spring; 28 - insertion rod; 29 - pressure head; 30 - through hole; 31 - tamping rod; 32 - sliding block; 33 - sliding rail; 34 - third spring; 35 - first rotating shaft; 36 - second rotating shaft; 37 - first cylindrical gear; 38 - first conical gear; 39 - second conical gear; 40 - second cylindrical gear; 41 - groove body; 42 - arc surface groove; 4201 - arc surface; 4202 - flat surface; 43 - guide hole; 44 - fourth spring; 45 - ball head rod; 46 - fifth spring; 47 - support rod. DETAILED DESCRIPTION

[0030] In order to make the person skilled in the art better understand the application scheme, the technical solutions in the embodiments of the application will be described clearly and completely below by combining the drawings in the embodiments of the application.

[0031] It should be noted that in the present application: the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices; the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "transverse", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and these terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation; the terms "first", "second" and the like are used to distinguish similar objects, and do not necessarily describe a specific order or sequence; the terms "mounting", "providing", "provided with", "connecting", "connected", "sleeved" and the like should be interpreted broadly; for example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication between two devices, elements or components. In addition, in addition to being used to indicate the orientation or positional relationship, some terms can also be used to indicate other meanings, for example, the term "upper" may also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0032] Embodiment. A stain filtering structure for pumped storage power station, the structure is referred to Figures 1 to 9 , comprising a bottom shell 1, an outer side of a bottom of the bottom shell 1 is provided with a drain pipe 9, a top of the bottom shell 1 is fixedly installed with a water inlet cylinder 2, an outer side of the water inlet cylinder 2 is provided with a water inlet pipe 7, an inner side of the water inlet cylinder 2 is provided with an inner cylinder 11, a bottom of the inner cylinder 11 is provided with a lower pipe body 17, the lower pipe body 17 is communicated with the bottom shell 1, a plurality of filter holes 12 are formed on an outer cylinder wall surrounding the inner cylinder 11, an inner side of the inner cylinder 11 is provided with a tamping mechanism for tamping the filter holes 12 in a blocked state; a load ring 13 is fixedly sleeved on the bottom of the inner cylinder 11, a piston sleeve 14 is fixedly sleeved on an outer ring surface of the load ring 13, the piston sleeve 14 is connected with an inner wall of the water inlet cylinder 2, a water storage cavity is arranged between a top surface of the load ring 13 and the inner wall of the water inlet cylinder 2, a spiral conveying mechanism is arranged in the water storage cavity, and a setting height of the spiral conveying mechanism is greater than a setting height of the water inlet cylinder 2. When performing the stain filtering work of the pumped storage power station, the automatic tamping of the filter holes 12 in the blocked state can be performed through the tamping mechanism, and at the same time after tamping, the dirt in the water storage cavity can be discharged through the spiral conveying mechanism.

[0033] The tamping mechanism comprises a vertical rod 19 arranged on the axis of the inner cylinder 11, the vertical rod 19 is fixedly connected with the inner wall of the bottom of the bottom shell 1 through the lower pipe body 17, a plurality of conical surface covers 20 are uniformly and spacedly arranged on the vertical rod 19 along the height direction, the conical surface cover 20 comprises a conical surface 2001 and a cylindrical surface 2002, a plurality of elastic push rods are arranged around the conical surface 2001 of the conical surface cover 20. The elastic push rod comprises an inclined surface block 21 connected with the conical surface cover 20, a tamping rod 31 is arranged at the end of the inclined surface block 21 away from the conical surface cover 20, the tamping rod 31 is arranged in alignment with the filter hole 12, a sliding block 32 is arranged on the tamping rod 31, the sliding block 32 is slidably connected with a sliding rail 33, the sliding rail 33 is fixedly connected with the inner side of the inner cylinder 11, a third spring 34 is arranged in the sliding rail 33, one end of the third spring 34 is connected with the sliding rail 33, and the other end of the third spring 34 is connected with the inner cylinder 11. The tamping of the filter hole 12 is downward through the inner cylinder 11, so that the inclined surface block 21 slides downward on the peripheral surface of the conical surface cover 20, providing extrusion for the inclined surface block 21, thereby driving the tamping rod 31 to tamping the filter hole 12, and at the same time compressing the third spring 34, and after tamping, the inclined surface block 21 is extruded by the upward movement of the inner cylinder 11, and the tamping rod 31 and the inclined surface block 21 are driven to reset by the compression force of the third spring 34; in the actual stain filtering process, the lower pipe body 17 can be arranged as a non-circular pipe structure, such as a rectangular lower pipe body 17, the lower pipe body 17 cooperates with the apertures on the bottom shell 1 to provide a limit for the inner cylinder 11, so that the inner cylinder 11 cannot rotate by itself.

[0034] A plurality of first springs 15 are arranged around the lower pipe body 17 in the circumferential direction, one end of the first spring 15 is connected with the inner cylinder 11, the other end of the first spring 15 is connected with the water inlet cylinder 2, a plurality of electromagnets 16 are arranged on the same side of the water inlet cylinder 2 connected with the first spring 15 in the circumferential direction, and a displacement sensor 18 is fixedly arranged on the bottom of the inner side of the water inlet cylinder 2.

[0035] The spiral conveying mechanism comprises a rotating cylinder 3 rotatably sleeved on the top end of the inner cylinder 11, a spiral blade 4 is arranged around the rotating cylinder 3 and the inner cylinder 11, and the spiral blade 4 is fixedly connected with the rotating cylinder 3, and the rotating cylinder 3 is internally provided with a driving assembly; the inner side of the inner cylinder 11 is provided with a connecting rod 26, the connecting rod 26, the rotating cylinder 3 and the inner cylinder 11 are coaxially arranged, the rotating cylinder 3 is driven to rotate above the inner cylinder 11, the spiral blade 4 is driven to rotate, and spiral conveying can be performed to discharge dirt. The top end of the connecting rod 26 is provided with a plug rod 28, the top end of the plug rod 28 is provided with a pressure head 29, the pressure head 29 is matched and connected in a through hole 30 in the center of the top of the rotating cylinder 3, the plug rod 28 is elastically connected with the connecting rod 26 through a second spring 27, the second spring 27 is in a stretched state, providing a downward pressure for the rotating cylinder 3, and increasing the friction between the rotating cylinder 3 and the inner cylinder 11.

[0036] The driving assembly comprises an inner tooth ring 25 arranged inside the rotating cylinder 3, the inner tooth ring 25 is in meshing connection with a second cylindrical gear 40, the second cylindrical gear 40 is arranged on the bottom surface of the inner side of a cover 24, the cover 24 is fixed to the inner cylinder 11 through a support rod 47, the center of the second cylindrical gear 40 is provided with a second rotating shaft 36, the second rotating shaft 36 is provided with a second bevel gear 39, the second bevel gear 39 is in meshing connection with a first bevel gear 38, the center of the first bevel gear 38 is provided with a first rotating shaft 35, the side of the first rotating shaft 35 away from the first bevel gear 38 is provided with a first cylindrical gear 37, the first cylindrical gear 37 is in meshing connection with a rack 23, the rack 23 is connected with one end of a connecting plate 22 through a groove 41 penetrating the rotating cylinder 3, the other end of the connecting plate 22 is connected with the vertical rod 19; the first rotating shaft 35 and the second rotating shaft 36 are rotatably arranged inside the rotating cylinder 3. Through the foregoing driving assembly, when the first cylindrical gear 37 runs on the rack 23, the second rotating shaft 36 can be rotated.

[0037] A guide hole 43 is arranged on the contact surface of the second cylindrical gear 40 and the second rotating shaft 36, the guide hole 43 is provided with a fourth spring 44, the fourth spring 44 is connected with a ball head rod 45, the spherical surface end of the ball head rod 45 is arranged towards the second rotating shaft 36, the second rotating shaft 36 is provided with an arc surface groove 42 matched with the ball head rod 45, the inner side of the arc surface groove 42 is provided with a flat surface 4202 and an arc surface 4201. When the second rotating shaft 36 rotates counterclockwise, the second cylindrical gear 40 will not rotate; when the second rotating shaft 36 rotates clockwise, the second cylindrical gear 40 can be driven to rotate.

[0038] The water inlet pipe 7 is provided with an electric control valve 8, the electric control valve 8 is electrically connected with a control cabinet 10, the control cabinet 10 is electrically connected with the displacement sensor 18 and the electromagnet 16.

[0039] The top end of the water inlet cylinder 2 is provided with a material guide cover 6, the top of the material guide cover 6 is conically arranged.

[0040] The contact position of the spiral blade 4 and the outer wall of the inner cylinder 11 is fixedly installed with a rubber strip 5 along the length direction, the inside of the rubber strip 5 is provided with a fifth spring 46 in a compressed state, so that the rubber strip 5 is pressed against the outer wall of the inner cylinder 11, when the spiral blade 4 rotates, the outer wall of the inner cylinder 11 can be scraped, the dirt can be scraped off, and the upward spiral conveying can be carried out, and the water is discharged through the top of the water inlet cylinder 2.

[0041] The working principle of the stain filtering structure of the pumped storage power station is as follows: when the stain filtering structure of the pumped storage power station is used, water in the lower reservoir is pumped out by an external water pumping device, is transported to the water inlet pipe 7 through a pipeline, and then enters the annular water storage cavity between the top surface of the carrier ring 13 and the inner wall of the water inlet cylinder 2; the water is filtered through the filter holes 12, and impurities such as leaves and sand in the water are intercepted, the filtered water enters the inner cylinder 11, and then is discharged into the bottom shell 1 through the lower pipe body 17, and the drain pipe 9 is connected to a water pumping device to pump the filtered water in the bottom shell 1 to the upper reservoir.

[0042] Through the above continuous filtering process, the stains are accumulated in the water storage cavity, and the filter holes 12 are blocked, so that the water in the water storage cavity is not easy to pass through the filter holes 12 and then be discharged through the lower pipe body 17, the weight of the structure above the first spring 15 is increased, the gravity is greater than the compression force of the first spring 15 and the friction force between the structure above the first spring 15 and the inner wall of the water inlet cylinder 2, the carrier ring 13 moves downward, and the displacement sensor 18 senses in real time to provide a sensing signal for a controller in the control cabinet 10 to judge the height of the carrier ring 13 in real time, and when it is judged that the height of the carrier ring 13 is reduced, that is, the filter holes 12 are blocked.

[0043] At this time, the electromagnet 16 is energized, the electrically controlled valve 8 is closed, the electromagnet 16 magnetically attracts the bottom surface of the inner cylinder 11 through magnetic attraction, so that the inner cylinder 11 and the carrier ring 13 further move downward, until the bottom surface of the inner cylinder 11 contacts the top end of the electromagnet 16, and in this process, the first spring 15 is further compressed.

[0044] During the above downward movement of the inner cylinder 11, the elastic push rod also moves downward together, the inclined surface of the inclined block 21 slides downward on the conical surface 2001 of the conical cover 20 until it contacts the cylindrical surface 2002, the inclined block 21 is extruded away from the axis direction of the vertical rod 19, and the guide of the sliding block 32 and the sliding rail 33 causes the inclined block 21 and the ramming rod 31 to move close to the filter hole 12, while the third spring 34 is compressed, the ramming rod 31 is inserted into the filter hole 12 from the inside, pushes the blocked objects in the filter hole 12 out, and enters the water storage cavity, thereby realizing the ramming treatment of the filter hole 12.

[0045] Further, when the inner cylinder 11 moves downward, the structure in the rotating cylinder 3 and the cover 24 moves downward together, so that the first cylindrical gear 37 moves downward on the rack 23, and through meshing transmission, the first rotating shaft 35 rotates, and then through the meshing transmission of the first conical gear 38 and the second conical gear 39, the second rotating shaft 36 rotates, and the second rotating shaft 36 is not fixedly connected with the second cylindrical gear 40, and the connection between the two is as shown in Figures 7-8 Figure 8 ​In the shown, the second rotating shaft 36 is driven to rotate counterclockwise, so that the spherical end of the ball head rod 45 walks on the arc surface 4201, and the spherical end of the ball head rod 45 smoothly enters the position where the arc surface groove 42 of the second rotating shaft 36 is not opened, and the ball head rod 45 is compressed by the fourth spring 44, and after one rotation, the ball head rod 45 enters the arc surface groove 42 again by the elastic force of the fourth spring 44, and is restored to the state as shown in Figure 8 The second rotating shaft 36 continuously rotates counterclockwise, which does not drive the second cylindrical gear 40 to rotate, so that the rotating cylinder 3 does not rotate;

[0046] After the filter hole 12 is rammed through, the electromagnet 16 is powered off, the inner cylinder 11 loses the magnetic attraction force on the bottom surface, and the inner cylinder 11 is driven to rise and reset by the elastic force of the first spring 15, the inclined block 21 moves relative to the conical cover 20, the inclined block 21 and the peripheral surface of the conical cover 20 are always in contact by the elastic force of the third spring 34, when the inclined block 21 slides upward at the conical surface 2001, the ramming rod 31 is pulled out of the filter hole 12, and the state as shown in Figure 2 When the inner cylinder 11 rises and resets, the first cylindrical gear 37 walks upward on the rack 23, and is driven to rotate by the meshing transmission, and then drives the second rotating shaft 36 to rotate clockwise by the meshing transmission of the first bevel gear 38 and the second bevel gear 39, and the second rotating shaft 36 and the second cylindrical gear 40 are in the state as shown in Figure 8 The second rotating shaft 36 rotates clockwise, pushes the ball head rod 45 through the plane 4202, so that the second rotating shaft 36 and the second cylindrical gear 40 rotate together, the second cylindrical gear 40 meshes with the inner tooth ring 25 to drive the rotating cylinder 3 to rotate, and the spiral blade 4 rotates together to perform spiral conveying, conveying the stains filtered in the water storage cavity upward and discharging from the top end of the water inlet cylinder 2.

[0047] Obviously, the above only describes some embodiments of the present application, but not all embodiments. The above embodiments are not intended to limit the present application, and those skilled in the art can make various changes and modifications to the present application. Any combination, modification, equivalent replacement, improvement, etc. made by those skilled in the art within the spirit and principles of the present application should be within the scope of protection of the present application.

Claims

1. A stain filtering structure for pumped storage power plants, characterized by: The utility model provides a filter device, including bottom shell (1), the outside of bottom shell (1) bottom is provided with drain pipe (9), the top of bottom shell (1) is fixedly installed with water inlet cylinder (2), the outside of water inlet cylinder (2) is provided with water inlet pipe (7), the inside of water inlet cylinder (2) is provided with inner cylinder (11), the bottom of inner cylinder (11) is provided with lower pipe body (17), and lower pipe body (17) is communicated with bottom shell (1), and a plurality of filter holes (12) are set up on the outer cylinder wall of surrounding inner cylinder (11), and the inside of inner cylinder (11) is provided with the ramming mechanism for ramming filter hole (12) under the condition of being blocked, the bottom of inner cylinder (11) is fixedly sleeved with carrier ring (13), the outer ring surface of carrier ring (13) is fixedly sleeved with piston sleeve (14), and piston sleeve (14) is connected with the inner wall of water inlet cylinder (2), and the top surface of carrier ring (13) and the inner wall of water inlet cylinder (2) are provided with water storage cavity, and the inside of water storage cavity is provided with spiral conveying mechanism, and the setting height of spiral conveying mechanism is greater than the setting height of water inlet cylinder (2), The ramming mechanism includes a vertical rod (19) disposed on the axis of the inner cylinder (11), the vertical rod (19) is fixedly connected with the inner wall of the bottom of the lower pipe body (17) and the bottom shell (1), a plurality of conical covers (20) are uniformly and spaced apart along the height direction on the vertical rod (19), the conical cover (20) includes a conical surface (2001) and a cylindrical surface (2002), and a plurality of elastic push rods are disposed around the conical surface (2001) of the conical cover (20). The elastic push rod includes a bevel block (21) connected with the conical cover (20), a ramming rod (31) is disposed at the end of the bevel block (21) away from the conical cover (20), the ramming rod (31) is matched with the filter hole (12), a sliding block (32) is disposed on the ramming rod (31), the sliding block (32) is slidably connected with a sliding rail (33), the sliding rail (33) is fixedly connected to the inner side of the inner cylinder (11), a third spring (34) is disposed in the sliding rail (33), one end of the third spring (34) is connected with the sliding rail (33), and the other end of the third spring (34) is connected with the inner cylinder (11). A plurality of first springs (15) are circumferentially disposed around the lower pipe body (17), one end of the first spring (15) is connected with the inner cylinder (11), the other end of the first spring (15) is connected with the water inlet cylinder (2), a plurality of electromagnets (16) are circumferentially disposed on the same side of the water inlet cylinder (2) connected with the first spring (15), and a displacement sensor (18) is fixedly disposed at the bottom of the inner side of the water inlet cylinder (2). An electric control valve (8) is disposed on the water inlet pipe (7), the electric control valve (8) is electrically connected with a control cabinet (10), and the control cabinet (10) is electrically connected with the displacement sensor (18) and the electromagnet (16).

2. The stain filtering structure for pumped storage power plants according to claim 1, characterized in that: The spiral conveying mechanism comprises a rotating cylinder (3) sleeved at the top end of an inner cylinder (11), spiral blades (4) arranged around the rotating cylinder (3) and the inner cylinder (11), and the spiral blades (4) being fixedly connected with the rotating cylinder (3), and a driving assembly arranged in the rotating cylinder (3); the inner side of the inner cylinder (11) is provided with a connecting rod (26), the connecting rod (26), the rotating cylinder (3) and the inner cylinder (11) are coaxially arranged, the top end of the connecting rod (26) is provided with a plug rod (28), the top end of the plug rod (28) is provided with a pressure head (29), the pressure head (29) is matchedly connected in a through hole (30) in the center of the top of the rotating cylinder (3), and the plug rod (28) is elastically connected with the connecting rod (26) through a second spring (27).

3. The stain filtering structure for pumped storage power plants according to claim 2, characterized in that: The driving assembly comprises an inner gear ring (25) arranged in the rotating cylinder (3), the inner gear ring (25) being meshingly connected with a second cylindrical gear (40), the second cylindrical gear (40) being arranged on the bottom surface of the inner side of a cover (24), the cover (24) being fixedly connected with the inner cylinder (11) through a support rod (47), the center of the second cylindrical gear (40) being provided with a second rotating shaft (36), the second rotating shaft (36) being provided with a second bevel gear (39), the second bevel gear (39) being meshingly connected with a first bevel gear (38), the center of the first bevel gear (38) being provided with a first rotating shaft (35), the side, away from the first bevel gear (38), of the first rotating shaft (35) being provided with a first cylindrical gear (37), the first cylindrical gear (37) being meshingly connected with a rack (23), the rack (23) being connected with one end of a connecting plate (22) through a groove (41) penetrating the rotating cylinder (3), the other end of the connecting plate (22) being connected with a vertical rod (19); the first rotating shaft (35) and the second rotating shaft (36) are rotatably arranged on the inner side of the rotating cylinder (3).

4. The stain filtering structure for pumped storage power plants according to claim 3, characterized in that: A guide hole (43) is formed on the contact surface between the second cylindrical gear (40) and the second rotating shaft (36), the guide hole (43) is provided with a fourth spring (44), the fourth spring (44) is connected with a ball head rod (45), the spherical end of the ball head rod (45) is arranged towards the second rotating shaft (36), the second rotating shaft (36) is provided with an arc surface groove (42) matched with the ball head rod (45), and the inner side of the arc surface groove (42) is provided with a plane (4202) and an arc surface (4201).

5. The stain filtering structure for pumped storage power plants according to claim 1, characterized in that: A material guide cover (6) is arranged around the top end of the water inlet cylinder (2), and the top of the material guide cover (6) is conically arranged.

6. The stain filtering structure for pumped storage power plants according to claim 2, characterized in that: Rubber strips (5) are fixedly arranged at the contact positions between the spiral blades (4) and the outer wall of the inner cylinder (11) along the length direction, and the interiors of the rubber strips (5) are provided with fifth springs (46) in a compressed state.

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