An easy-to-clean inlet filter for nuclear power plant water pumps

Abstract

This utility model belongs to the field of nuclear power plant water pump technology, specifically disclosing a nuclear power plant water pump inlet filter screen that is easy to clean. It includes a base plate, a pump body mounted on the top of the base plate, and an inlet on the right side of the pump body. A retaining frame is fixedly inserted into the inlet, and a filter plate is fixed to the left side of the retaining frame. A ring is fixed to the right side of the retaining frame, and a sleeve is fixed to the left side of the ring. This easy-to-clean nuclear power plant water pump inlet filter screen has slots at the top and bottom of the right side of the pump body. After inserting the ring or similar object into the inlet from the right side of the pump body, a filter structure is formed. The inserts connected at the top and bottom of the ring by pressure blocks are embedded in the slots, contacting the silicone sleeve and restricting the central ring or similar object, preventing the filter screen structure from detaching from the inlet. The slot on the right side is used to connect to the water inlet pipe, facilitating the removal of the structure for rinsing the mesh, thus solving the problem of inconvenient filter screen cleaning.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power plant water pump technology, specifically to an inlet filter screen for a nuclear power plant water pump that is easy to clean. Background Technology

[0002] Nuclear power plant water pumps are hydraulic conveying devices commonly used in nuclear power plants. They are a large system composed of multiple pumps that continuously deliver cooling water to the nuclear reactor core and remove heat to achieve the cooling effect. To ensure a sufficient water supply, nuclear power plants are often built on the banks of rivers or the sea.

[0003] When a water pump draws water from the external environment for cooling, it inevitably carries away impurities. A filter screen needs to be installed at the pump inlet to prevent excessive impurities from entering the pump and damaging the impeller or clogging the pipes. However, if such a filter screen is just a thin plate with metal wires, it is easy to deform under the impact of water flow, and it is inconvenient to clean the mesh, which also greatly reduces the efficiency of liquid delivery.

[0004] Now, a novel, easy-to-clean inlet filter for nuclear power plant water pumps is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a nuclear power plant water pump inlet filter that is easy to clean, so as to solve the problem of filter screens being inconvenient to clean as mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a nuclear power plant water pump inlet filter screen that is easy to clean, comprising a base plate, a pump body mounted on the top of the base plate, and an inlet provided on the right side of the pump body. A retaining frame is fixedly inserted into the inlet, and a filter plate is fixed on the left side of the retaining frame. A ring is fixed on the right side of the outside of the retaining frame, and a sleeve is fixed on the left side of the ring. A pressure block is fixed above and below the outside of the sleeve, and an insert block is fixed on the left side of the pressure block. Slots are provided at the top and bottom of the right side of the pump body, and a silicone sleeve is fixed on the inner wall of the slot. An insert block is fixed on the left side of the pressure block. An outlet is provided on the right side of the top of the pump body.

[0007] As a further technical solution of this utility model, the insert is embedded in the silicone sleeve, and the sleeve frame moves horizontally with the pressure block.

[0008] As a further technical solution of this utility model, a groove is provided on the right side of the sleeve frame, a rubber gasket is fixed around the inner wall of the sleeve frame, an annular groove is formed between the sleeve frame and the interception frame, and the liquid inlet is embedded in the annular groove.

[0009] As a further technical solution of this utility model, four sets of fan-shaped shells are fixed inside the filter plate, a central block is fixed at the middle position between the four sets of fan-shaped shells, and a rotating block is movably connected inside the central block. A bolt is threadedly connected to the right side of the rotating block, and two sets of screw holes are provided at the top right side of the central block. Filter plates are movably connected in the fan-shaped shells, and a fan-shaped channel is formed between adjacent fan-shaped shells.

[0010] As a further technical solution of this utility model, the left side of the bolt is embedded in the screw hole, and the outer wall of the rotating block is fixedly connected to four sets of filter sheets.

[0011] As a further technical solution of this utility model, the filter sheet has the same area as the fan-shaped channel, and the filter sheet rotates to fit the outer wall of the right side of the fan-shaped channel.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the easy-to-clean nuclear power water pump inlet filter screen not only makes it easy to clean the filter plate and prevents leakage at the inlet, but also makes it easy to open or close the filter screen.

[0013] (1) By setting slots at the top and bottom of the right side of the pump body, a filter structure is formed after inserting a ring or other object into the liquid inlet from the right side of the pump body. The inserts connected by the pressure blocks at the top and bottom of the ring are embedded in the slots, contact the silicone sleeve and restrict the central ring or other object, preventing the filter structure from detaching from the liquid inlet. The slot on the right side is used to connect the water inlet pipe, making it easy to remove the structure to rinse the mesh without having to insert it into the liquid inlet.

[0014] (2) By fixing a sleeve frame on the left side of the ring, a sleeve frame is set around the outside of the frame, and an annular groove is formed between the sleeve frame and the frame. When this filter structure is installed at the liquid inlet, the annular groove fits perfectly on the outside of the liquid inlet. After squeezing the rubber gasket, a sealed state can be formed, which does not affect the filter plate's filtration of impurities in the liquid, is convenient for people to disassemble and install, and can also prevent liquid from leaking out from the interface.

[0015] (3) By fixing the filter plate on the left side of the interception frame, insert your finger into the interception frame and rotate the rotating block to rotate the filter plate out of the fan-shaped housing and stop it on the right side of the corresponding fan-shaped channel to block it. Then align the screw hole and tighten the bolt to prevent the rotating block from continuing to rotate. The mode of this filter screen structure can be manually switched, either to filter impurities or to directly transport water. While the filter plate enters and exits the fan-shaped housing, it can also rub and clean the mesh holes, achieving two goals at once. Attached Figure Description

[0016] Figure 1 This is a frontal cross-sectional view of the present invention.

[0017] Figure 2This is a front view cross-sectional structural diagram of the slot of this utility model;

[0018] Figure 3 This is a front view cross-sectional structural diagram of the interception frame of this utility model;

[0019] Figure 4 This is a schematic diagram of the filter plate structure from the right perspective of this utility model;

[0020] Figure 5 For the present utility model Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0021] In the diagram: 1. Base plate; 2. Pump body; 3. Slot; 4. Silicone sleeve; 5. Insert block; 6. Pressing block; 7. Retention frame; 8. Filter plate; 9. Groove; 10. Ring; 11. Sleeve frame; 12. Liquid inlet; 13. Liquid outlet; 14. Annular groove; 15. Rubber gasket; 16. Fan-shaped housing; 17. Filter disc; 18. Fan-shaped channel; 19. Center block; 20. Rotary block; 21. Screw hole; 22. Bolt. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-5 An embodiment of this utility model provides: a nuclear power plant water pump inlet filter screen that is easy to clean, including a base plate 1, a pump body 2 installed at the top of the base plate 1, and an inlet 12 provided on the right side of the pump body 2. A retaining frame 7 is fixedly inserted into the inlet 12, and a filter plate 8 is fixed on the left side of the retaining frame 7. A ring 10 is fixed on the right side of the outside of the retaining frame 7, and a sleeve frame 11 is fixed on the left side of the ring 10. A pressure block 6 is fixed at the top and bottom of the outside of the sleeve frame 11, and an insert block 5 is fixed on the left side of the pressure block 6. Slots 3 are provided at the top and bottom of the right side of the pump body 2, and a silicone sleeve 4 is fixed on the inner wall of the slot 3. An insert block 5 is fixed on the left side of the pressure block 6. An outlet 13 is provided on the right side of the top of the pump body 2.

[0024] The insert 5 is embedded in the silicone sleeve 4, and the sleeve frame 11 moves horizontally with the pressure block 6;

[0025] Specifically, such as Figure 1 and Figure 2As shown, after inserting the ring 10 and other objects into the inlet 12 from the right side of the pump body 2, a filter structure is formed. The inserts 5 connected by the pressure blocks 6 at the top and bottom of the ring 10 are embedded in the slot 3, contacting the silicone sleeve 4 and restricting the central ring 10 and other objects, preventing the filter structure from detaching from the inlet 12. The slot 9 on the right side is used to connect the water inlet pipe, making it convenient to remove the structure and rinse the mesh.

[0026] A slot 9 is provided on the right side of the sleeve frame 11, and a rubber gasket 15 is fixed around the inner wall of the sleeve frame 11. An annular groove 14 is formed between the sleeve frame 11 and the interception frame 7, and the liquid inlet 12 is embedded in the annular groove 14.

[0027] Specifically, such as Figure 1 and Figure 3 As shown, a sleeve frame 11 is provided around the outside of the interception frame 7, and an annular groove 14 is formed between the sleeve frame 11 and the filter screen structure. When this filter screen structure is installed at the liquid inlet 12, the annular groove 14 fits perfectly on the outside of the liquid inlet 12. After squeezing the rubber gasket 15, a sealed state can be formed, which does not affect the filtration of impurities in the liquid by the filter plate 8, and is also convenient for people to disassemble and install.

[0028] Four sets of sector-shaped shells 16 are fixed inside the filter plate 8. A central block 19 is fixed at the middle position between the four sets of sector-shaped shells 16. A rotating block 20 is movably connected inside the central block 19. A bolt 22 is threadedly connected to the right side of the rotating block 20. Two sets of screw holes 21 are provided at the top right side of the central block 19. Filter plates 17 are movably connected in the sector-shaped shells 16. A sector-shaped channel 18 is formed between adjacent sector-shaped shells 16.

[0029] The left side of the bolt 22 is embedded in the screw hole 21. The outer wall of the rotating block 20 is fixedly connected to the four sets of filter plates 17. The filter plates 17 have the same area as the fan-shaped channel 18. The filter plates 17 rotate against the outer wall of the right side of the fan-shaped channel 18.

[0030] Specifically, such as Figure 1 , Figure 4 and Figure 5 As shown, insert your finger into the interception frame 7 and rotate the rotating block 20 to rotate the filter plate 17 out of the fan-shaped housing 16 and stop it on the right side of the corresponding fan-shaped channel 18 to block it. Then align the screw hole 21 and tighten the bolt 22 to prevent the rotating block 20 from continuing to rotate. The mode of this filter structure can be manually switched, either to filter impurities or to directly deliver water flow, enriching the usage of this structure.

[0031] Working principle: In use, the circular ring 10 and other components are first inserted into the inlet 12 from the right side of the pump body 2 to form a filter structure. The inserts 5, connected by the pressure blocks 6 at the top and bottom of the circular ring 10, are embedded in the slots 3, contacting the silicone sleeve 4 and restricting the central circular ring 10 and other components, preventing the filter structure from detaching from the inlet 12. The groove 9 on the right side is used to connect the water inlet pipe. A sleeve frame 11 is provided around the outside of the retaining frame 7, forming an annular groove 1 between the sleeve frame 11 and the retaining frame 7. 4. When installing this filter structure at the liquid inlet 12, the annular groove 14 fits perfectly on the outside of the liquid inlet 12. After squeezing the rubber gasket 15, a sealed state can be formed. Insert your finger into the interception frame 7 and rotate the rotating block 20 to rotate the filter 17 out of the fan-shaped housing 16 and stop it on the right side of the corresponding fan-shaped channel 18 to block it. Then align the screw hole 21 and tighten the bolt 22 to prevent the rotating block 20 from continuing to rotate. The mode of this filter structure can be manually switched to either filter impurities or directly deliver water.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A nuclear power plant water pump inlet filter screen that is easy to clean, comprising a substrate (1), characterized in that: A pump body (2) is installed at the top of the substrate (1), and an inlet (12) is provided on the right side of the pump body (2). A retaining frame (7) is fixedly inserted into the inlet (12), and a filter plate (8) is fixed on the left side of the retaining frame (7). A ring (10) is fixed on the right side of the outside of the retaining frame (7), and a sleeve frame (11) is fixed on the left side of the ring (10). A pressure block (6) is fixed on the top and bottom of the outside of the sleeve frame (11), and an insert block (5) is fixed on the left side of the pressure block (6). Slots (3) are provided at the top and bottom of the right side of the pump body (2), and a silicone sleeve (4) is fixed on the inner wall of the slot (3). An insert block (5) is fixed on the left side of the pressure block (6). An outlet (13) is provided on the right side of the top of the pump body (2).

2. The nuclear power plant water pump inlet filter screen that is easy to clean according to claim 1, characterized in that: The insert (5) is embedded in the silicone sleeve (4), and the sleeve frame (11) moves horizontally with the pressure block (6).

3. The nuclear power plant water pump inlet filter screen that is easy to clean according to claim 1, characterized in that: A slot (9) is provided on the right side of the sleeve (11), and a rubber gasket (15) is fixed around the inner wall of the sleeve (11). An annular groove (14) is formed between the sleeve (11) and the interception frame (7), and the liquid inlet (12) is embedded in the annular groove (14).

4. The nuclear power plant water pump inlet filter screen that is easy to clean according to claim 1, characterized in that: The filter plate (8) has four sets of fan-shaped shells (16) fixed inside. A central block (19) is fixed at the middle position between the four sets of fan-shaped shells (16). A rotating block (20) is movably connected inside the central block (19). A bolt (22) is threadedly connected to the right side of the rotating block (20). Two sets of screw holes (21) are provided at the top right side of the central block (19). Filter plates (17) are movably connected in the fan-shaped shells (16). A fan-shaped channel (18) is formed between adjacent fan-shaped shells (16).

5. The nuclear power plant water pump inlet filter screen that is easy to clean according to claim 4, characterized in that: The left side of the bolt (22) is embedded in the screw hole (21), and the outer wall of the rotating block (20) is fixedly connected to the four sets of filter plates (17).

6. The nuclear power plant water pump inlet filter screen that is easy to clean according to claim 4, characterized in that: The filter (17) has the same area as the fan-shaped channel (18), and the filter (17) rotates to fit the outer wall on the right side of the fan-shaped channel (18).

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