Water filtering mechanism for power generation

Abstract

The utility model discloses a power generation water filtering mechanism which comprises an inner filtering wheel set and an outer filtering wheel set which are communicated with a water inlet pipe and a water outlet pipe, a first flow guide assembly is detachably arranged on the inner filtering wheel set, and a second flow guide assembly is detachably arranged on the inner filtering wheel set; sealing devices are arranged between the outer filtering wheel set and the water inlet pipe and between the outer filtering wheel set and the water outlet pipe, transmission tooth grooves are formed in the sealing devices, and a first supporting assembly and a second supporting assembly are arranged between the inner filtering wheel set and the outer filtering wheel set. The water inlet pipe is communicated with the inner side of the inner filtering wheel set, the outer filtering wheel set is arranged on the outer side of the inner filtering wheel set, blocking of foreign matter to inflow water is reduced, the filtering wheel sets are driven to rotate along with transmission of the transmission component at the position of the transmission tooth groove, and the situation that the filtering effect is affected by accumulation of filtered objects can be avoided by combining the flow guide assembly. Meanwhile, the filtering efficiency is improved; the sealing device can prevent seawater leakage, and the structure is simple and compact.

Description

Technical Field

[0001] The utility model relates to the technical field of power generation cold source treatment, in particular to a power generation water filtering mechanism. Background Art

[0002] Nuclear power plants require a large amount of cooling water and are generally built near the coast. As seawater is pumped in and typhoons strike, marine organisms in the mud float up and enter the cooling water filtration system of the nuclear power plant along with the pumped cooling water. The filtration system generally has a truss supporting the filter at the water inlet, which causes marine organisms or foreign objects to hang on the truss and block the pumped seawater, reducing the passing rate of the filtered cooling water, thereby reducing the power of the unit or even shutting down the reactor. In severe cases, it may even pose a threat to the use of the heat sink. Utility Model Content

[0003] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the utility model is to provide a power generation water filtering mechanism which can reduce the accumulation of foreign matter and improve the passing rate of cooling water.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a water filtering mechanism for power generation, including an inner filter wheel group connected to a water inlet pipe and a water outlet pipe, a first guide component is detachably provided on the inner side wall of the inner filter wheel group, and a second guide component is detachably provided on the outer side wall of the inner filter wheel group; an outer filter wheel group is provided on the outer side of the inner filter wheel group, a sealing device is provided between the outer filter wheel group and the water inlet pipe and the water outlet pipe, a transmission tooth groove is provided on the sealing device, and a first support component and a second support component for supporting each other are provided between the inner filter wheel group and the outer filter wheel group.

[0005] With the above structure, the inner filter wheel group is connected to the water inlet pipe, and only the first guide assembly is provided on the inner side wall of the inner filter wheel group, and no truss is provided. At the same time, the outer filter wheel group is provided on the outer side of the inner filter wheel group, and the first support assembly and the second support assembly for mutual support are provided between the inner filter wheel group and the outer filter wheel group to replace the role of the truss, that is, the filter layer is placed outside, and the support structure of the water inlet end is also moved outward; therefore, in order to ensure that the pumped seawater does not leak out, a sealing device is provided between the outer filter wheel group and the water inlet pipe and the water outlet pipe, and at the same time wraps the position of the inner filter wheel group, so that the pumped seawater is filtered by the inner filter wheel group and the outer filter wheel group in turn and then flows into the cooling water pipeline, and as the transmission tooth groove position is driven by the transmission component, the corresponding position of the sealing device synchronously drives the inner filter wheel group and the outer filter wheel group to rotate simultaneously, and while filtering the seawater, the mobile state of the filtered object can be maintained to prevent the filtered object from precipitating, accumulating and clogging, thereby improving and ensuring effective filtration.

[0006] In order to simplify the structure and avoid blockage, while improving the fluidity of water flow and filtrate and ensuring the effectiveness of filtration, preferably, the inner filter wheel group includes an inner wheel frame connected to the water inlet pipe, and a plurality of inner connecting plates are arranged around the inner wheel frame in a circumferential direction, and an inner filter plate is arranged between two adjacent inner connecting plates, and a first guide component is screwed on the inner side wall of each of the inner connecting plates, and two adjacent first guide components are staggered with each other.

[0007] In order to simplify the structure and facilitate installation, preferably, the first guide assembly includes a plurality of inner bases arranged side by side and screwed to the inner connecting plate, each of the inner bases is fixed with an inner guide plate, one side of the inner guide plate is warped to the right away from one end of the inner base, and the other side of the inner guide plate is warped to the left away from one end of the inner base.

[0008] In order to simplify the structure and facilitate installation, preferably, the second guide assembly includes an outer base screwed on the outer side wall of the inner connecting plate and an outer guide plate screwed on the outer base, one side of the outer guide plate is warped to the right away from one end of the outer base, and the other side of the outer guide plate is warped to the left away from one end of the outer base.

[0009] In order to simplify the structure and facilitate installation, preferably, the outer filter wheel group includes an outer wheel frame and a plurality of outer connecting plates arranged along the circumferential direction of the outer wheel frame, and an outer filter plate is arranged between two adjacent outer connecting plates; a plurality of rows of inner support plates are arranged in parallel along the circumferential direction on the outer side wall of the inner wheel frame, and a plurality of inner support rods are arranged in the circumferential direction between two adjacent inner support plates; a plurality of rows of outer support plates are arranged in parallel along the circumferential direction on the inner side wall of the outer wheel frame, and the plurality of rows of outer support plates and inner support plates are staggered with each other, and a plurality of outer support rods are arranged in the circumferential direction at the positions corresponding to the inner support rods between two adjacent outer support plates.

[0010] To facilitate installation, preferably, the first supporting assembly includes an inner support rod and an inner connecting sleeve connected to one side of the inner support rod, the other side of the inner support rod is provided with an inner bottom plate, the inner connecting sleeve is fixedly sleeved on the inner support rod, and the inner bottom plate is screwed and fixed to the inner side wall of the outer support plate.

[0011] To facilitate installation, preferably, the second supporting assembly includes an outer support rod and an outer connecting sleeve connected to one side of the outer support rod, and an outer bottom plate is provided on the other side of the outer support rod. The outer connecting sleeve is fixedly sleeved on the outer support rod, and the outer bottom plate is screwed and fixed to the outer side wall of the inner support plate.

[0012] In order to simplify the installation structure, preferably, the sealing device includes a first outer baffle cover fixedly mounted on the outer side of the water inlet pipe, a first inner baffle cover is fixedly provided on the inner wall of the first outer baffle cover, a first ring cover is sealingly and rotatably mounted on the outer side of the first inner baffle cover, and one side of the first ring cover is threadedly connected to the edge of the outer wall of the corresponding side of the outer wheel frame; and also includes a second outer baffle cover fixedly mounted on the outer side of the water outlet pipe, a second inner baffle cover is fixedly provided on the inner wall of the second outer baffle cover, a second ring cover is sealingly and rotatably mounted on the inner side of the second inner baffle cover, and one side of the second ring cover is threadedly connected to the edge of the outer wall of the corresponding side of the outer wheel frame.

[0013] In order to ensure the installation sealing and avoid seawater leakage, preferably, a first bending slope is arranged on the inner side wall of the first ring cover, a first transition slope which is closely matched with the first bending slope is arranged on the outer side wall of the first inner stop cover, first grooves are arranged on the two slopes, the two first grooves together form a first annular cavity, and a first sealing ring is arranged in the first annular cavity; a second bending slope is arranged on the outer side wall of the second ring cover, a second transition slope which is closely matched with the second bending slope is arranged on the inner side wall of the second inner stop cover, second grooves are arranged on the second bending slope and the second transition slope, the two second grooves together form a second annular cavity, and a second sealing ring is arranged in the second annular cavity.

[0014] In order to facilitate transmission and installation, preferably, transmission tooth grooves are arranged on the outer side walls of the first ring cover and the second ring cover along the circumferential direction.

[0015] Beneficial effects: The utility model arranges a water inlet pipe connected to the inner side of the inner filter wheel group, and arranges an outer filter wheel group on the outer side of the inner filter wheel group, thereby reducing the obstruction of water inlet by foreign matter. As the transmission component is transmitted at the transmission tooth groove position, the filter wheel group is driven to rotate. Combined with the arrangement of the guide component, the accumulation of filtered matter can be avoided to affect the filtering effect, while the filtering efficiency is improved. The sealing device can prevent seawater from leaking out, and the structure is simple and compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 for Figure 1 Left view of .

[0019] Figure 3 for Figure 2 Enlarged view of point A in .

[0020] Figure 4 for Figure 2 Enlarged view of point B in .

[0021] Figure 5 This is a schematic diagram of the installation structure of the water inlet pipe.

[0022] Figure 6 This is a schematic diagram of the installation structure of the water outlet pipe.

[0023] Figure 7 It is a schematic diagram of the installation structure of the inner wheel frame and the outer wheel frame.

[0024] Figure 8 for Figure 7 Enlarged view of point C in the figure.

[0025] Fig. 9 for Figure 7 Enlarged view of point D in .

[0026] Fig.10 It is a schematic diagram of the structure of the inner guide plate.

[0027] Fig.11 It is a schematic diagram of the structure of the outer guide plate.

[0028] The meanings of the symbols in the accompanying drawings are:

[0029] Inner wheel frame-1; water inlet pipe-10; inner connecting plate-11; inner filter plate-12; inner base-13; inner guide plate-14; outer base-15; outer guide plate-16;

[0030] Outlet pipe-20; inner support plate-21; inner support rod-22; inner support rod-23; inner connecting sleeve-24; inner bottom plate-25;

[0031] Transmission tooth groove-3; outer wheel frame-30; outer connecting plate-31; outer filter plate-32; outer support plate-33; outer support rod-34; outer support rod-35; outer connecting sleeve-36; outer bottom plate-37;

[0032] The first ring cover 41; the first inner cover 42; the first outer cover 43; the second outer cover 44; the second inner cover 45; the second ring cover 46; the first sealing ring 47; the second sealing ring 48. DETAILED DESCRIPTION

[0033] Depend on Figures 1 to 11As shown, the utility model includes an inner filter wheel group connected to the water inlet pipe 10 and the water outlet pipe 20, a first guide assembly is detachably provided on the inner side wall of the inner filter wheel group, and a second guide assembly is detachably provided on the outer side wall of the inner filter wheel group; an outer filter wheel group is provided on the outer side of the inner filter wheel group, a sealing device is provided between the outer filter wheel group and the water inlet pipe 10 and the water outlet pipe 20, a transmission tooth groove 3 is provided on the sealing device, and a first support assembly and a second support assembly for supporting each other are provided between the inner filter wheel group and the outer filter wheel group.

[0034] Specifically, the inner filter wheel group includes an inner wheel frame 1 connected to the water inlet pipe 10, and a plurality of inner connecting plates 11 are arranged around the inner wheel frame 1 in a circumferential direction. An inner filter plate 12 is arranged between two adjacent inner connecting plates 11, and a first flow guide component is screwed on the inner side wall of each of the inner connecting plates 11, and two adjacent first flow guide components are staggered with each other.

[0035] The first guide component includes a plurality of inner bases 13 arranged side by side and screwed to the inner connecting plate 11, each of the inner bases 13 is fixedly provided with an inner guide plate 14, one side of the inner guide plate 14 is warped to the right away from one end of the inner base 13, and the other side of the inner guide plate 14 is warped to the left away from one end of the inner base 13; the second guide component includes an outer base 15 screwed to the outer side wall of the inner connecting plate 11 and an outer guide plate 16 screwed to the outer base 15, one side of the outer guide plate 16 is warped to the right away from one end of the outer base 15, and the other side of the outer guide plate 16 is warped to the left away from one end of the outer base 15.

[0036] The outer filter wheel assembly includes an outer wheel frame 30 and a plurality of outer connecting plates 31 arranged along the circumferential direction of the outer wheel frame 30, and an outer filter plate 32 is arranged between two adjacent outer connecting plates 31; a plurality of rows of inner support plates 21 are arranged in parallel along the circumferential direction on the outer side wall of the inner wheel frame 1, and a plurality of inner support rods 22 are arranged in the circumferential direction between two adjacent inner support plates 21; a plurality of rows of outer support plates 33 are arranged in parallel along the circumferential direction on the inner side wall of the outer wheel frame 30, and the plurality of rows of outer support plates 33 are staggered with the inner support plates 21, and a plurality of outer support rods 34 are arranged in the circumferential direction at the position corresponding to the inner support rod 22 between two adjacent outer support plates 33.

[0037] The first supporting assembly includes an inner support rod 23 and an inner connecting sleeve 24 connected to one side of the inner support rod 23, an inner bottom plate 25 is provided on the other side of the inner support rod 23, the inner connecting sleeve 24 is sleeved and fixed to the inner support rod 22, and the inner bottom plate 25 is screwed and fixed to the inner side wall of the outer support plate 33; the second supporting assembly includes an outer support rod 35 and an outer connecting sleeve 36 connected to one side of the outer support rod 35, an outer bottom plate 37 is provided on the other side of the outer support rod 35, the outer connecting sleeve 35 is sleeved and fixed to the outer support rod 34, and the outer bottom plate 37 is screwed and fixed to the outer side wall of the inner support plate 21.

[0038] The sealing device includes a first outer baffle 43 fixedly sleeved on the outer side of the water inlet pipe 10, a first inner baffle 42 is fixedly provided on the inner side wall of the first outer baffle 43, a first ring cover 41 is sealingly and rotatably sleeved on the outer side of the first inner baffle 42, one side of the first ring cover 41 is screwed to the edge of the outer side wall of the corresponding side of the outer wheel frame 30; a first bending inclined surface is arranged around the inner side wall of the first ring cover 41, a first transition inclined surface that fits the first bending inclined surface is arranged on the outer side wall of the first inner baffle 42, first grooves are arranged on the two inclined surfaces, the two first grooves together form a first annular cavity, and a first sealing ring 47 is arranged in the first annular cavity.

[0039] The sealing device also includes a second outer baffle 44 fixedly sleeved on the outer side of the water outlet pipe 20, a second inner baffle 45 is fixedly provided on the inner side wall of the second outer baffle 44, a second ring cover 46 is sealingly and rotatably sleeved on the outer side of the second inner baffle 45, one side of the second ring cover 46 is threadedly connected to the edge of the outer side wall of the corresponding side of the outer wheel frame 30; a second bending slope is arranged around the outer side wall of the second ring cover 46, a second transition slope that fits the second bending slope is arranged on the inner side wall of the second inner baffle 45, second grooves are arranged on both the second bending slope and the second transition slope, the two second grooves together form a second annular cavity, and a second sealing ring 48 is arranged in the second annular cavity.

[0040] Transmission tooth grooves 3 are arranged on the outer side walls of the first ring cover 41 and the second ring cover 46 along the circumferential direction.

[0041] The operating principle of the utility model is as follows:

[0042] like Figures 1 to 11 As shown, before use, the outer wheel frame 30 is set on the outer side of the inner wheel frame 1, and the inner support rod 23 and the outer support rod 35 are used as the support between the two wheel frames (the installation state is as shown in FIG. Figure 1 , Figure 2 and Figure 7As shown), the middle part of the inner wheel frame 1 is a hollow structure and is only connected with a water inlet pipe 10, an inner filter plate 12 and an outer filter plate 32 are screwed and fixed, and an inner guide plate 14 and an outer guide plate 16 are screwed and fixed.

[0043] Next, a first outer baffle 43 is sleeved and fixed on the water inlet pipe 10, a first inner baffle 42 is fixedly provided on the inner side wall of the first outer baffle 43, a first ring cover 41 is sleeved on the outer side of the first inner baffle 42, and one side of the first ring cover 41 is screwed to the edge of the outer side wall of the corresponding side of the outer wheel frame 30; in order to prevent seawater from leaking out, a first bending inclined surface (not shown) is arranged around the inner side wall of the first ring cover 41, and a first transition inclined surface (not shown) that fits the first bending inclined surface is arranged on the outer side wall of the first inner baffle 42, and first grooves are arranged on both inclined surfaces, and the two first grooves enclose a first annular cavity, and a first sealing ring 47 (such as Figure 3 shown).

[0044] Similarly, a second outer baffle 44 is sleeved and fixed on the water outlet pipe 20, a second inner baffle 45 is fixedly provided on the inner side wall of the second outer baffle 44, a second ring cover 46 is sleeved on the outer side of the second inner baffle 45, and one side of the second ring cover 46 is screwed to the edge of the outer side wall of the corresponding side of the outer wheel frame 30; in order to prevent seawater from leaking out, a second bending slope (not shown) is wound around the inner side wall of the second ring cover 46, and a second transition slope (not shown) that fits the second bending slope is provided on the outer side wall of the second inner baffle 45, and second grooves are provided on both the second bending slope and the second transition slope, and the two second grooves enclose a second annular cavity, and a second sealing ring 48 (such as Figure 4 In this way, seawater will not leak out from the installation gap, and it is also convenient to wash away the debris remaining on the outer filter plate 32 in the water outlet direction to improve the filtering efficiency.

[0045] In this embodiment, the transmission component uses a power motor (not shown) connected to a driving gear, and the driving gear is meshed and connected to the transmission tooth groove 3. When in use, the power motor is started, and the first ring cover 41 and the second ring cover 46 connected to the transmission tooth groove 3 are driven to rotate simultaneously by the meshing transmission. Since the two ring covers are screwed to the outer wheel frame 30, the inner wheel frame 1 and the outer wheel frame 30 are synchronously driven to rotate synchronously; at the same time, in the water inlet direction, the water inlet pipe 10 draws seawater into the inner wheel frame 1, and flows into the outer wheel frame 30 through the inner filter plate 12, and then flows out to the cold source water pump (not shown) through the outer filter plate 32.

[0046] During this process, due to the rotation of the inner wheel frame 1 and the outer wheel frame 30, the inner guide plate 14 and the outer guide plate 16 are driven to rotate synchronously, and the debris filtered by the inner filter plate 12 is stirred by the inner guide plate 14. Under the action of gravity and the flushing action of the incoming water, the debris circulates from top to bottom on the wound inner guide plate 14, avoiding the formation of accumulation on the lower inner filter plate 12 and clogging the filter holes; in particular, the two adjacent first guide components are staggered with each other, forming multiple staggered stirring impacts in the water inlet direction, forming a state of multiple diversions of the seawater entrained with debris, avoiding the instantaneous accumulation of debris, and facilitating the fluidity of the seawater; similarly, the outer guide plate 16 continues to stir the seawater between the outer wheel frame 30 and the inner wheel frame 1, driving the residual filtered matter to move, and also preventing the formation of accumulation on the lower outer filter plate 32 and clogging the filter holes.

[0047] In the water outlet direction, since the second inner baffle cover 45 is installed on the outer side of the second ring cover 46, the inner side of the second ring cover 46 is connected to the water inlet end of the water outlet pipe 20. As the wheel frame rotates, the debris remaining between the outer filter plate 32 and the inner filter plate 12 will be continuously washed away by the seawater pumped in through the water outlet pipe 20, further avoiding the formation of accumulation and blockage on the inner side of the outer filter plate 32 and the outer side of the inner filter plate 12, thereby greatly improving the filtering efficiency of the seawater.

[0048] In order to improve the transmission efficiency and reduce the loss of the transmission belt, it is preferable to provide a transmission component at the positions corresponding to the transmission tooth grooves 3 on the left and right sides of the first ring cover 41 and the second ring cover 46 .

[0049] The length of the wheel frame in this embodiment should be set according to the amount of seawater pumped in. In addition, the number of guide plates, support rods and filter plates should be based on the actual construction size. The number shown in this embodiment is not unique.

Claims

1. A water filtering mechanism for power generation, characterized in that: The invention comprises an inner filter wheel assembly connected to a water inlet pipe (10) and a water outlet pipe (20), wherein a first flow guide assembly is detachably provided on the inner side wall of the inner filter wheel assembly, and a second flow guide assembly is detachably provided on the outer side wall of the inner filter wheel assembly; an outer filter wheel assembly is provided on the outer side of the inner filter wheel assembly, a sealing device is provided between the outer filter wheel assembly and the water inlet pipe (10) and the water outlet pipe (20), a transmission tooth groove (3) is provided on the sealing device, and a first support assembly and a second support assembly for supporting each other are provided between the inner filter wheel assembly and the outer filter wheel assembly.

2. A power generation water filtering mechanism according to claim 1, characterized in that: The inner filter wheel assembly comprises an inner wheel frame (1) connected to a water inlet pipe (10), a plurality of inner connecting plates (11) are arranged around the inner wheel frame (1) in a circumferential direction, an inner filter plate (12) is arranged between two adjacent inner connecting plates (11), a first flow guide component is screwed onto the inner side wall of each inner connecting plate (11), and two adjacent first flow guide components are arranged in a staggered manner.

3. A power generation water filtering mechanism according to claim 2, characterized in that: The first guide assembly comprises a plurality of inner bases (13) arranged side by side and screwed to the inner connecting plate (11), each of the inner bases (13) being fixedly provided with an inner guide plate (14), one side of the inner guide plate (14) being away from one end of the inner base (13) being warped to the right, and the other side of the inner guide plate (14) being away from one end of the inner base (13) being warped to the left.

4. A power generation water filtering mechanism according to claim 3, characterized in that: The second guide assembly comprises an outer base (15) screwed onto the outer side wall of the inner connecting plate (11) and an outer guide plate (16) screwed onto the outer base (15); one side of the outer guide plate (16) is warped to the right away from one end of the outer base (15), and the other side of the outer guide plate (16) is warped to the left away from one end of the outer base (15).

5. A power generation water filtering mechanism according to claim 2, characterized in that: The outer filter wheel assembly comprises an outer wheel frame (30) and a plurality of outer connecting plates (31) arranged along the circumferential direction of the outer wheel frame (30), and an outer filter plate (32) is arranged between two adjacent outer connecting plates (31); a plurality of rows of inner support plates (21) are arranged in parallel along the circumferential direction on the outer side wall of the inner wheel frame (1), and a plurality of inner support rods (22) are arranged in parallel along the circumferential direction between two adjacent inner support plates (21); a plurality of rows of outer support plates (33) are arranged in parallel along the circumferential direction on the inner side wall of the outer wheel frame (30), the plurality of rows of outer support plates (33) and the inner support plates (21) are arranged in a staggered manner, and a plurality of outer support rods (34) are arranged in the circumferential direction at positions corresponding to the inner support rods (22) between two adjacent outer support plates (33).

6. A power generation water filtering mechanism according to claim 5, characterized in that: The first supporting assembly comprises an inner support rod (23) and an inner connecting sleeve (24) connected to one side of the inner support rod (23); an inner bottom plate (25) is provided on the other side of the inner support rod (23); the inner connecting sleeve (24) is sleeved and fixed to the inner support rod (22); and the inner bottom plate (25) is screwed and fixed to the inner side wall of the outer support plate (33).

7. A power generation water filtering mechanism according to claim 6, characterized in that: The second supporting assembly comprises an outer support rod (35) and an outer connecting sleeve (36) connected to one side of the outer support rod (35); an outer bottom plate (37) is provided on the other side of the outer support rod (35); the outer connecting sleeve (36) is sleeved and fixed to the outer support rod (34); and the outer bottom plate (37) is screwed and fixed to the outer side wall of the inner support plate (21).

8. A power generation water filtering mechanism according to claim 2, characterized in that: The sealing device comprises a first outer baffle (43) fixedly sleeved on the outer side of the water inlet pipe (10), a first inner baffle (42) fixedly arranged on the inner side wall of the first outer baffle (43), a first ring cover (41) sealingly and rotatably sleeved on the outer side of the first inner baffle (42), one side of the first ring cover (41) being screwed to the edge of the outer side wall of the corresponding side of the outer wheel frame (30); and also comprises a second outer baffle (44) fixedly sleeved on the outer side of the water outlet pipe (20), a second inner baffle (45) fixedly arranged on the inner side wall of the second outer baffle (44), a second ring cover (46) sealingly and rotatably sleeved on the inner side of the second inner baffle (45), one side of the second ring cover (46) being screwed to the edge of the outer side wall of the corresponding side of the outer wheel frame (30).

9. A power generation water filtering mechanism according to claim 8, characterized in that: A first curved bevel is disposed on the inner side wall of the first ring cover (41), a first transition bevel that fits the first curved bevel is disposed on the outer side wall of the first inner stop cover (42), a first groove is disposed on both the two bevels, the two first grooves together form a first annular cavity, a first sealing ring (47) is disposed in the first annular cavity; a second curved bevel is disposed on the outer side wall of the second ring cover (46), a second transition bevel that fits the second curved bevel is disposed on the inner side wall of the second inner stop cover (45), a second groove is disposed on both the second curved bevel and the second transition bevel, the two second grooves together form a second annular cavity, a second sealing ring (48) is disposed in the second annular cavity.

10. A power generation water filtering mechanism according to claim 8, characterized in that: Transmission tooth grooves (3) are arranged on the outer side walls of the first ring cover (41) and the second ring cover (46) in a circumferential direction.

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