Stain filtering structure for pumped storage power station

Abstract

The invention provides a stain filtering structure for a pumped storage power station, and relates to the technical field of filtering device.The stain filtering structure comprises a bottom shell, a drainage pipe is arranged on the outer side of the bottom of the bottom shell, a water inlet barrel is fixedly installed at the top of the bottom shell, a water inlet pipe is arranged on the outer side of the water inlet barrel, an inner barrel is arranged in the water inlet barrel, and a lower pipe body is arranged at the bottom of the inner barrel; 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, and a tamping mechanism for tamping the filter holes in a blocked state is arranged in the inner cylinder; the bottom of the inner barrel is fixedly sleeved with a carrying ring, the outer ring face of the carrying ring is fixedly sleeved with a piston sleeve, the piston sleeve is connected with the inner wall of the water inlet barrel, a water storage cavity is formed between the top face of the carrying ring and the inner wall of the water inlet barrel, a spiral conveying mechanism is arranged in the water storage cavity, and the arrangement height of the spiral conveying mechanism is larger than that of the water inlet barrel. Daily automatic maintenance of the filtering structure is achieved by arranging the mashing mechanism and the spiral conveying mechanism.

Description

Technical Field

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

[0002] A pumped-storage power station is a special form of hydroelectric power station with two reservoirs, an upper reservoir and a lower reservoir. During the period of low electricity load, it uses the excess electricity from the power grid to pump water from the lower reservoir to the upper reservoir to accumulate potential energy. During the period of peak electricity load, water is released from the upper reservoir to generate electricity, and the water flows to the lower reservoir again.

[0003] Pumped storage power stations generally need to be equipped with a dirt filter structure to filter out debris in the water, such as leaves, sand and gravel, to ensure the cleanliness of the water flow in the power station and prevent dirt from damaging the power station equipment. The existing technology, such as the existing patent document "CN115957553B A pumped storage power station dirt filter device", can achieve filtration, but after long-term filtration, the filter holes may be blocked, such as sand and gravel stuck in the filter holes, thereby affecting the filtration effect, and the filter holes may be difficult to dredge through flushing and cleaning with water flow. Summary of the invention

[0004] The present invention provides a stain filtering structure for a pumped storage power station, aiming to solve at least one technical problem existing in the prior art mentioned in the background technology.

[0005] The present invention provides the following technical solutions to achieve the above objectives:

[0006] A stain filtering structure for a pumped storage power station 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 inside the water inlet cylinder, a lower tube body is arranged at the bottom of the inner cylinder, the lower tube body is communicated with the bottom shell, a plurality of filter holes are opened on the outer cylinder wall surrounding the inner cylinder, a tamping mechanism for tamping the filter holes in a blocked state is arranged inside 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 to the inner wall of the water inlet cylinder, a water storage chamber is arranged between the top surface of the carrier ring and the inner wall of the water inlet cylinder, a screw conveying mechanism is arranged inside the water storage chamber, and the setting height of the screw conveying mechanism is greater than the setting height of the water inlet cylinder.

[0007] Furthermore, the tamping mechanism includes a vertical rod arranged on the axis of the inner tube, the vertical rod passes through the lower tube body and is fixedly connected to the inner wall of the bottom of the bottom shell, and a plurality of conical covers are evenly spaced on the vertical rod along the height direction, the conical covers include a conical surface and a cylindrical surface, and a plurality of elastic push rods are arranged on the conical surface surrounding the conical cover.

[0008] Furthermore, the elastic push rod includes an inclined block connected to the conical cover, a tamping rod is provided at one end of the inclined block away from the conical cover, the tamping rod is matched with the filter hole, a slider is provided on the tamping rod, the slider is slidably connected to the slide rail, the slide rail is fixedly connected to the inner side of the inner cylinder, a third spring is provided in the slide rail, one end of the third spring is connected to the slide rail, and the other end of the third spring is connected to the inner cylinder.

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

[0010] Furthermore, the spiral conveying mechanism includes a rotating cylinder rotatably sleeved on the top of the inner cylinder, spiral blades are arranged around the rotating cylinder and the inner cylinder, and the spiral blades are fixedly connected to the rotating cylinder, and a driving assembly is arranged inside the rotating cylinder; a connecting rod is arranged on the inner side of the inner cylinder, the connecting rod, the rotating cylinder and the inner cylinder are coaxially arranged, an insertion rod is arranged on the top of the connecting rod, a pressure head is arranged on the top of the insertion rod, the pressure head is matched and connected to the through hole in the center of the top of the rotating cylinder, and the insertion rod is elastically connected to the connecting rod through a second spring.

[0011] Furthermore, the driving assembly includes an inner gear ring arranged inside the rotating cylinder, the inner gear ring is meshingly connected with the 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 fixed to the inner cylinder through a support rod, a second rotating shaft is arranged at the center of the second cylindrical gear, a second bevel gear is arranged on the second rotating shaft, the second bevel gear is meshingly connected with the first bevel gear, a first rotating shaft is arranged at 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 meshingly connected with the rack, the rack passes through the rotating cylinder through a groove body and is connected to one end of the connecting plate, and the other end of the connecting plate is connected to the vertical rod; the first rotating shaft and the second rotating shaft are rotatably arranged inside the rotating cylinder.

[0012] Furthermore, a guide hole is opened on the contact surface between the second cylindrical gear and the second rotating shaft, and a fourth spring is arranged in the guide hole. The fourth spring is connected to the ball head rod, and the spherical end of the ball head rod is arranged toward the second rotating shaft. An arc groove matching the ball head rod is arranged on the second rotating shaft, and a plane and an arc-shaped surface are arranged on the inner side of the arc groove.

[0013] Furthermore, the water inlet pipe is provided with an electric control valve, the electric control valve is electrically connected to a control cabinet, and the control cabinet is electrically connected to a displacement sensor and an electromagnet.

[0014] Furthermore, a material guide cover is arranged around the top end of the water inlet cylinder, and the top of the material guide cover is arranged in a conical shape.

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

[0016] Beneficial Effects

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

[0018] The stain filtering structure for a pumped storage power station proposed by the present invention can effectively dredge the filter hole when it is blocked by providing a tamping mechanism, and push the blockage into the water storage chamber. After this treatment, the smoothness of the filter hole is significantly improved. In addition, by adding a spiral conveying mechanism, after the filter hole is dredged, the dirt deposited in the water storage chamber can be discharged by spiral conveying, thereby completing the internal cleaning work. The functions of the tamping mechanism and the spiral conveying mechanism are combined to realize the daily automatic maintenance of the filter structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below only relate to some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor.

[0020] Figure 1 It is a schematic diagram of the external structure of the present invention as a whole;

[0021] Figure 2 It is a schematic diagram of the internal structure of the present invention as a whole;

[0022] Figure 3 For the present invention Figure 2 The enlarged structural diagram of the middle A part;

[0023] Figure 4 For the present invention Figure 2 The enlarged structural diagram of the middle B part;

[0024] Figure 5 It is a schematic diagram of the structure in which the elastic push rods are distributed around the conical mask and the filter holes are distributed on the inner cylinder of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of the inner gear ring and the interior of the hood of the present invention;

[0026] Figure 7 It 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 8It is a schematic diagram of the structure of the arc surface groove and the ball head rod of the present invention;

[0028] Fig. 9 It is a schematic diagram of the structure of the rubber strip and the fifth spring of the present invention;

[0029] Figure numerals: 1- bottom shell; 2- water inlet cylinder; 3- rotating cylinder; 4- spiral blade; 5- rubber strip; 6- 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 tube body; 18- displacement sensor; 19- vertical rod; 20- cone cover; 2001- cone surface; 2002- cylindrical surface; 21- inclined block; 22- connecting plate; 23- rack; 24- partition cover; 25- inner Gear ring; 26-connecting rod; 27-second spring; 28-insertion rod; 29-pressure head; 30-through hole; 31-tamping rod; 32-slider; 33-slide rail; 34-third spring; 35-first rotating shaft; 36-second rotating shaft; 37-first cylindrical gear; 38-first bevel gear; 39-second bevel gear; 40-second cylindrical gear; 41-groove body; 42-arc groove; 4201-arc surface; 4202-plane; 43-guide hole; 44-fourth spring; 45-ball head rod; 46-fifth spring; 47-support rod. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0031] It should be noted that in the present invention: the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or apparatuses; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like are based on the directions or positional relationships shown in the drawings. These The terms are mainly used to better describe the present invention 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", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence; the terms "install", "set", "provided with", "connected", "connected", "sleeved", etc. should be understood in a broad sense; for example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. In addition, some terms can be used to express other meanings in addition to indicating orientation or positional relationships. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0032] Embodiment. A stain filtering structure for a pumped storage power station, the structure of which is referenced Figures 1 to 9 , comprising a bottom shell 1, a drain pipe 9 is arranged on the outer side of the bottom of the bottom shell 1, a water inlet cylinder 2 is fixedly installed on the top of the bottom shell 1, a water inlet pipe 7 is arranged on the outer side of the water inlet cylinder 2, an inner cylinder 11 is arranged inside the water inlet cylinder 2, a lower tube body 17 is arranged at the bottom of the inner cylinder 11, the lower tube body 17 is communicated with the bottom shell 1, a plurality of filter holes 12 are opened on the outer cylinder wall surrounding the inner cylinder 11, and a tamping mechanism for tamping the filter holes 12 in a blocked state is arranged inside the inner cylinder 11; a carrier ring 13 is fixedly sleeved on the bottom of the inner cylinder 11, a piston sleeve 14 is fixedly sleeved on the outer ring surface of the carrier ring 13, the piston sleeve 14 is connected to the inner wall of the water inlet cylinder 2, a water storage cavity is arranged between the top surface of the carrier ring 13 and the inner wall of the water inlet cylinder 2, a screw conveying mechanism is arranged inside the water storage cavity, and the setting height of the screw conveying mechanism is greater than the setting height of the water inlet cylinder 2. When the dirt is filtered in the pumped storage power station, the filter hole 12 can be automatically tamped through by the tamping mechanism when it is blocked. After tamping through, the dirt in the water storage cavity can be discharged by the spiral conveying mechanism.

[0033] The tamping mechanism includes a vertical rod 19 arranged on the axis of the inner tube 11, the vertical rod 19 passes through the lower tube body 17 and is fixedly connected to the inner wall of the bottom of the bottom shell 1, a plurality of cone covers 20 are evenly spaced along the height direction on the vertical rod 19, the cone covers 20 include a cone surface 2001 and a cylindrical surface 2002, and a plurality of elastic push rods are arranged on the cone surface 2001 surrounding the cone cover 20. The elastic push rod includes an inclined block 21 connected to the cone cover 20, a tamping rod 31 is arranged at one end of the inclined block 21 away from the cone cover 20, the tamping rod 31 is arranged to match and align with the filter hole 12, a slider 32 is arranged on the tamping rod 31, the slider 32 is slidably connected to the slide rail 33, the slide rail 33 is fixedly connected to the inner side of the inner tube 11, a third spring 34 is arranged in the slide rail 33, one end of the third spring 34 is connected to the slide rail 33, and the other end of the third spring 34 is connected to the inner tube 11. The filter hole 12 is tamped through by the downward movement of the inner cylinder 11, so that the inclined surface block 21 slides downward on the circumferential surface of the conical cover 20, providing extrusion for the inclined surface block 21, thereby driving the tamping rod 31 to tamp through the filter hole 12 and compressing the third spring 34. After tamping through, the extrusion of the inclined surface block 21 is reduced 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 elastic force of the third spring 34; in the actual stain filtering process, the lower tube body 17 can be set to a non-circular tube structure, such as a lower tube body 17 with a rectangular cross-section. The lower tube body 17 cooperates with the pores on the bottom shell 1 to provide a limit for the inner tube 11, so that the inner tube 11 cannot rotate.

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

[0035] The spiral conveying mechanism includes a rotating cylinder 3 that is rotatably sleeved on the top 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 to the rotating cylinder 3, and a driving assembly is arranged inside the rotating cylinder 3; a connecting rod 26 is arranged on the inner side of the inner cylinder 11, and the connecting rod 26, the rotating cylinder 3 and the inner cylinder 11 are arranged coaxially, and by driving the rotating cylinder 3 to rotate above the inner cylinder 11, the spiral blade 4 is driven to rotate, and spiral conveying can be performed to discharge dirt. A plug rod 28 is arranged at the top of the connecting rod 26, and a pressure head 29 is arranged at the top of the plug rod 28. The pressure head 29 is matched and connected in the through hole 30 at the top center of the rotating cylinder 3. The plug rod 28 is elastically connected to the connecting rod 26 through a second spring 27, and the second spring 27 is in a stretched state, providing 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 includes an inner gear ring 25 arranged inside the rotating cylinder 3, the inner gear ring 25 is meshed with the second cylindrical gear 40, the second cylindrical gear 40 is arranged on the bottom surface of the inner side of the partition cover 24, the partition cover 24 is fixed to the inner cylinder 11 through the support rod 47, a second rotating shaft 36 is arranged at the center of the second cylindrical gear 40, a second bevel gear 39 is arranged on the second rotating shaft 36, the second bevel gear 39 is meshed with the first bevel gear 38, a first rotating shaft 35 is arranged at the center of the first bevel gear 38, a first cylindrical gear 37 is arranged on the side of the first rotating shaft 35 away from the first bevel gear 38, the first cylindrical gear 37 is meshed with the rack 23, the rack 23 passes through the rotating cylinder 3 through the groove body 41 and is connected to one end of the connecting plate 22, and the other end of the connecting plate 22 is connected to the vertical rod 19; the first rotating shaft 35 and the second rotating shaft 36 are rotatably arranged inside the rotating cylinder 3. By means of the aforementioned 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 provided on the contact surface between the second cylindrical gear 40 and the second rotating shaft 36. A fourth spring 44 is provided in the guide hole 43. The fourth spring 44 is connected to a ball head rod 45. The spherical end of the ball head rod 45 is arranged toward the second rotating shaft 36. An arc groove 42 matching the ball head rod 45 is provided on the second rotating shaft 36. A plane 4202 and an arc-shaped surface 4201 are provided on the inner side of the arc groove 42. When the second rotating shaft 36 rotates counterclockwise, the second cylindrical gear 40 will not rotate together; only when the second rotating shaft 36 rotates clockwise can the second cylindrical gear 40 be driven to rotate.

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

[0039] 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 arranged in a cone shape.

[0040] A rubber strip 5 is fixedly installed along the length direction at the contact position between the spiral blade 4 and the outer wall of the inner cylinder 11. A fifth spring 46 in a compressed state is arranged inside the rubber strip 5 to press 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 to remove dirt, and the dirt can be spirally transported upward to be discharged through the top of the water inlet cylinder 2.

[0041] Working principle of the stain filter structure for pumped storage power station: When the integral stain filter structure for pumped storage power station is in use, water in the lower reservoir is pumped out by external pumping equipment, transported to the water inlet pipe 7 through a pipeline, and then enters the circular water storage cavity formed 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 hole 12 to intercept the stains in the lower water, such as leaves, sand and gravel, etc. The filtered water enters the inner cylinder 11, and then is discharged into the bottom shell 1 through the lower tube body 17, and the drainage pipe 9 is connected to a pumping equipment to pump the filtered water in the bottom shell 1 into the upper reservoir;

[0042] Through the above-mentioned continuous filtering process, the dirt is accumulated in the water storage chamber and causes the filter hole 12 to be blocked, so that the water in the water storage chamber is not easy to pass through the filter hole 12, and then it is not easy to be discharged through the lower tube body 17, so that the weight of the structure above the first spring 15 increases, and the gravity is greater than the compression elastic force of the first spring 15 and the friction between the structure above the first spring 15 and the inner wall of the water inlet cylinder 2, so that the carrier ring 13 moves downward, and the displacement sensor 18 senses in real time, provides a sensor signal to the controller in the control cabinet 10, and judges the height of the carrier ring 13 in real time. When it is judged that the height of the carrier ring 13 is reduced, the filter hole 12 is blocked;

[0043] At this time, the electromagnet 16 is energized, the electric control valve 8 is closed, and 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 of the electromagnet 16. During this process, the first spring 15 is further compressed.

[0044] During the downward movement of the middle inner cylinder 11, the elastic push rod moves downward together with it, and the inclined surface of the inclined surface block 21 slides downward on the conical surface 2001 of the conical cover 20 until it contacts the cylindrical surface 2002. The inclined surface block 21 is squeezed away from the axial direction of the vertical rod 19, and the inclined surface block 21 and the tamping rod 31 are moved closer to the filter hole 12 with the guidance of the slider 32 and the slide rail 33. At the same time, the third spring 34 is compressed, and the tamping rod 31 is inserted into the filter hole 12 from the inside, pushing out the object blocked in the filter hole 12 into the water storage chamber, thereby achieving the tamping treatment of the filter hole 12.

[0045] Furthermore, when the inner drum 11 moves downward, the rotating drum 3 and the structure in the partition cover 24 move downward together, so that the first cylindrical gear 37 moves downward on the rack 23, and the first rotating shaft 35 rotates through meshing transmission, and then the second rotating shaft 36 rotates through the meshing transmission of the first bevel gear 38 and the second bevel gear 39, and the second rotating shaft 36 is not fixedly connected to the second cylindrical gear 40, and the connection between the two is as follows: Figure 7-8 As shown, when the first cylindrical gear 37 moves up and down the rack 23, as shown in Figure 8As shown, the second rotating shaft 36 is driven to rotate counterclockwise, so that the spherical end of the ball head rod 45 moves on the arc surface 4201, and the spherical end of the ball head rod 45 smoothly enters the position where the second rotating shaft 36 does not have the arc groove 42. At the same time, the ball head rod 45 compresses the fourth spring 44. After one circle, the ball head rod 45 enters the arc groove 42 again due to the elastic force of the fourth spring 44, and returns to the state as shown in FIG. Figure 8 As shown, the second rotating shaft 36 continues to rotate counterclockwise for multiple circles, which will not drive the second cylindrical gear 40 to rotate, and thus will not drive the rotating drum 3 to rotate;

[0046] After the filter hole 12 is tamped, the electromagnet 16 is powered off, the bottom surface of the inner cylinder 11 loses its magnetic attraction, the inner cylinder 11 is driven upward and reset by the elastic force of the first spring 15, the inclined block 21 and the conical cover 20 move relative to each other, and the inclined block 21 and the circumferential surface of the conical cover 20 are always in contact with each other by the elastic force of the third spring 34. When the inclined block 21 slides upward at the conical surface 2001, the tamping rod 31 is pulled out from the filter hole 12 until the filter hole 12 is restored. Figure 2 At the same time, when the inner cylinder 11 is reset upward, the first cylindrical gear 37 moves upward on the rack 23, and the first rotating shaft 35 rotates through meshing transmission, and then the second rotating shaft 36 is driven to rotate clockwise through the meshing transmission of the first bevel gear 38 and the second bevel gear 39, and the second cylindrical gear 40 and the second rotating shaft 36 are as shown. Figure 8 In the state shown, the second rotating shaft 36 rotates clockwise, pushing the ball head rod 45 through the plane 4202, so that the second rotating shaft 36 and the second cylindrical gear 40 rotate together, and the second cylindrical gear 40 is meshed with the inner gear ring 25 to drive the rotating cylinder 3 to rotate, and the spiral blade 4 rotates therewith to perform spiral conveying, so as to transport the filtered stains in the water storage chamber upward and discharge them from the top of the water inlet cylinder 2.

[0047] Obviously, the above is only a part of the embodiments of the present invention, not all of the embodiments. The above embodiments are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and variations. Any combination, modification, equivalent replacement, improvement and all other embodiments that can be made by those of ordinary skill in the art within the spirit and principle of the present invention should be within the protection scope of the present invention.

Claims

1. A stain filtering structure for a pumped storage power station, characterized in that: The invention comprises a bottom shell (1), wherein a drainage pipe (9) is arranged on the outer side of the bottom of the bottom shell (1), a water inlet cylinder (2) is fixedly mounted on the top of the bottom shell (1), a water inlet pipe (7) is arranged on the outer side of the water inlet cylinder (2), an inner cylinder (11) is arranged inside the water inlet cylinder (2), a lower tube body (17) is arranged at the bottom of the inner cylinder (11), the lower tube body (17) is communicated with the bottom shell (1), a plurality of filter holes (12) are arranged on the outer cylinder wall surrounding the inner cylinder (11), and a filter (12) is arranged inside the inner cylinder (11). A tamping mechanism is provided for tamping the filter hole (12) in a blocked state; a carrier ring (13) is fixedly sleeved on the bottom of the inner cylinder (11); a piston sleeve (14) is fixedly sleeved on the outer ring surface of the carrier ring (13); the piston sleeve (14) is connected to the inner wall of the water inlet cylinder (2); a water storage cavity is provided between the top surface of the carrier ring (13) and the inner wall of the water inlet cylinder (2); a screw conveying mechanism is provided inside the water storage cavity, and the setting height of the screw conveying mechanism is greater than the setting height of the water inlet cylinder (2).

2. The stain filtering structure for a pumped storage power station according to claim 1, characterized in that: The tamping mechanism comprises a vertical rod (19) arranged on the axis of the inner tube (11), the vertical rod (19) passes through the lower tube body (17) and is fixedly connected to the inner wall of the bottom of the bottom shell (1), a plurality of conical covers (20) are evenly spaced along the height direction on the vertical rod (19), the conical covers (20) comprise a conical surface (2001) and a cylindrical surface (2002), and a plurality of elastic push rods are arranged on the conical surface (2001) surrounding the conical cover (20).

3. The stain filtering structure for a pumped storage power station according to claim 2, characterized in that: The elastic push rod comprises an inclined surface block (21) connected to the conical cover (20); a tamping rod (31) is arranged at one end of the inclined surface block (21) away from the conical cover (20); the tamping rod (31) is matched with the filter hole (12); a slider (32) is arranged on the tamping rod (31); the slider (32) is slidably connected to a slide rail (33); the slide rail (33) is fixedly connected to the inner side of the inner cylinder (11); a third spring (34) is arranged in the slide rail (33); one end of the third spring (34) is connected to the slide rail (33); and the other end of the third spring (34) is connected to the inner cylinder (11).

4. The stain filtering structure for a pumped storage power station according to claim 1, characterized in that: A plurality of first springs (15) are circumferentially arranged around the lower tube body (17); one end of the first spring (15) is connected to the inner tube (11); the other end of the first spring (15) is connected to the water inlet cylinder (2); a plurality of electromagnets (16) are circumferentially arranged on the same side where the water inlet cylinder (2) is connected to the first spring (15); and a displacement sensor (18) is fixedly arranged at the bottom of the inner side of the water inlet cylinder (2).

5. The stain filtering structure for a pumped storage power station according to claim 1, characterized in that: The spiral conveying mechanism comprises a rotating cylinder (3) rotatably sleeved on the top of an 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 to the rotating cylinder (3), and a driving component is arranged inside the rotating cylinder (3); a connecting rod (26) is arranged on the inner side of the inner cylinder (11), the connecting rod (26), the rotating cylinder (3) and the inner cylinder (11) are coaxially arranged, an insertion rod (28) is arranged at the top of the connecting rod (26), a pressure head (29) is arranged at the top of the insertion rod (28), and the pressure head (29) is matched and connected to a through hole (30) at the center of the top of the rotating cylinder (3), and the insertion rod (28) is elastically connected to the connecting rod (26) through a second spring (27).

6. The stain filtering structure for a pumped storage power station according to claim 5, characterized in that: The driving assembly comprises an inner gear ring (25) arranged inside the rotating cylinder (3), the inner gear ring (25) is meshedly connected with a second cylindrical gear (40), the second cylindrical gear (40) is arranged on the bottom surface of the inner side of the partition cover (24), the partition cover (24) is fixedly connected to the inner cylinder (11) through a support rod (47), a second rotating shaft (36) is arranged at the center of the second cylindrical gear (40), a second bevel gear (39) is arranged on the second rotating shaft (36), and the second bevel gear (39) is meshedly connected with the first bevel gear (38) A first rotating shaft (35) is arranged at the center of the first bevel gear (38), a first cylindrical gear (37) is arranged on a side of the first rotating shaft (35) away from the first bevel gear (38), the first cylindrical gear (37) is meshedly connected with the rack (23), the rack (23) passes through the rotating cylinder (3) through the groove body (41) and is connected to one end of the connecting plate (22), and the other end of the connecting plate (22) is connected to the vertical rod (19); the first rotating shaft (35) and the second rotating shaft (36) are rotatably arranged inside the rotating cylinder (3).

7. The stain filtering structure for a pumped storage power station according to claim 6, characterized in that: A guide hole (43) is provided on the contact surface between the second cylindrical gear (40) and the second rotating shaft (36); a fourth spring (44) is provided in the guide hole (43); the fourth spring (44) is connected to a ball head rod (45); the spherical end of the ball head rod (45) is arranged toward the second rotating shaft (36); an arc surface groove (42) matching the ball head rod (45) is provided on the second rotating shaft (36); a plane (4202) and an arc-shaped surface (4201) are provided on the inner side of the arc surface groove (42).

8. The stain filtering structure for a pumped storage power station according to claim 1, characterized in that: The water inlet pipe (7) is provided with an electric control valve (8), the electric control valve (8) is electrically connected to a control cabinet (10), and the control cabinet (10) is electrically connected to a displacement sensor (18) and an electromagnet (16).

9. The stain filtering structure for a pumped storage power station 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 arranged in a conical shape.

10. The stain filtering structure for a pumped storage power station according to claim 5, characterized in that: A rubber strip (5) is fixedly installed along the length direction at the contact position between the spiral blade (4) and the outer wall of the inner cylinder (11), and a fifth spring (46) in a compressed state is arranged inside the rubber strip (5).

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