Centrifugal pump bottom valve filtering device and centrifugal pump

Abstract

The utility model relates to the technical field of centrifugal pumps, in particular to a centrifugal pump bottom valve filtering device and a centrifugal pump, the centrifugal pump bottom valve filtering device comprises a first flange and a second flange, the first flange is fixedly installed at the top of the second flange, a connecting frame is fixedly installed at the bottom of the second flange, and a screen is arranged on the outer side of the connecting frame. A cleaning assembly is arranged in the connecting frame; the cleaning assembly is used for cleaning the screen mesh, the cleaning assembly is composed of a rotating frame, multiple sets of rotating plates, multiple sets of moving plates, multiple sets of cleaning brushes, an inner gear ring and multiple sets of guide gears, the rotating frame is rotationally connected to the interior of the connecting frame, and the multiple sets of rotating plates are rotationally connected to the interior of the rotating frame; the two sets of moving plates are connected to the two ends of the rotating plate in a sliding mode respectively, the cleaning brushes are located at the ends, away from the rotating plate, of the moving plates, and compared with an existing bottom valve filtering device, the overall practicability of the bottom valve filtering device can be improved through the design.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal pump technology, specifically to a centrifugal pump bottom valve filter device and a centrifugal pump. Background Technology

[0002] In existing shale gas extraction processes, the produced fluids contain silt and sand. A large amount of impurities are discharged into the gas field water tanks, and long-term accumulation can lead to excessively high impurity content in the water tanks. Therefore, it is necessary to regularly transfer the gas field water. Currently, centrifugal pumps are commonly used as pumping equipment at shale gas well stations. However, in actual use, impurities in the water often enter the centrifugal pump, and air often enters the water supply pipeline. It is necessary to clean the impurities and perform vacuuming operations on the centrifugal pump. Otherwise, it can easily damage the centrifugal pump motor, thereby affecting normal production and causing economic losses.

[0003] A search revealed that publication number CN220378569U discloses a centrifugal pump bottom valve filter device and a centrifugal pump. The centrifugal pump bottom valve filter device includes a check valve and a filter structure. The check valve can be connected to the centrifugal pump inlet. The filter structure prevents foreign objects from entering the check valve. Using this centrifugal pump bottom valve filter device can solve the problem of existing centrifugal pumps being easily damaged by impurities or air entering the pump when transferring gas field water. However, its drawback is that due to the pump's suction, impurities easily adhere to the screen surface, causing mesh blockage. This requires manual inspection and cleaning of the screen, consuming a large amount of manpower, and also results in low pumping efficiency. Therefore, improving existing bottom valve filter devices and designing a new centrifugal pump bottom valve filter device and centrifugal pump to solve the above-mentioned technical defects and improve the overall practicality of the bottom valve filter device is particularly important. Utility Model Content

[0004] The purpose of this utility model is to provide a centrifugal pump bottom valve filter device and a centrifugal pump. The cleaning brush contacts the inner side of the screen to clean the mesh of the screen, which can prevent the screen from becoming clogged and affecting the pumping efficiency of the centrifugal pump. Therefore, it can increase the working efficiency of the centrifugal pump and solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A centrifugal pump bottom valve filter device includes a first flange and a second flange. The first flange is fixedly installed on the top of the second flange, and a connecting frame is fixedly installed on the bottom of the second flange. A screen is provided on the outside of the connecting frame, and a cleaning component is provided inside the connecting frame.

[0007] The cleaning assembly is used to clean the screen. The cleaning assembly consists of a rotating frame, multiple sets of rotating plates, multiple sets of moving plates, multiple sets of cleaning brushes, an internal gear ring, and multiple sets of guide gears. The rotating frame is rotatably connected to the inside of the connecting frame. The multiple sets of rotating plates are rotatably connected to the inside of the rotating frame. The two sets of moving plates are slidably connected to the two ends of the rotating plates. The cleaning brush is located at the end of the moving plate away from the rotating plate. The internal gear ring is fixedly connected to the bottom of the connecting frame. The multiple sets of guide gears are rotatably connected to the four sides of the bottom of the rotating frame.

[0008] As a preferred embodiment of this utility model, the guide gear and the internal gear ring are meshed, the guide gear and the rotating plate are fixedly connected, and the drive end of a waterproof motor is fixedly connected to the outer side of the rotating frame.

[0009] As a preferred embodiment of this utility model, a sliding rod is fixedly connected to the interior of the movable plate extending into the rotating plate, and sliding blocks are slidably connected to both ends of the sliding rod. A rotating rod is rotatably connected to the end of the sliding block away from the movable plate.

[0010] As a preferred embodiment of this utility model, the end of the rotating rod away from the sliding block is rotatably connected to the rotating plate, and both ends of the sliding rod, located outside the two sets of sliding blocks, are fitted with first compression springs.

[0011] As a preferred embodiment of this utility model, a fixed plate is fixedly connected to one end of the cleaning brush near the moving plate, the cleaning brush is connected to the moving plate through the fixed plate, and limit rods are slidably connected to both ends of the moving plate, with a second compression spring sleeved on the outer side of the limit rod.

[0012] As a preferred embodiment of this utility model, the fixing plate is connected to the limiting rod through two sets of limiting grooves, and the two ends of the second compression spring are fixedly connected to the limiting rod and the moving plate, respectively.

[0013] A centrifugal pump includes a centrifugal pump inlet and a centrifugal pump foot valve filter device according to this utility model.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In this utility model, through the design of the cleaning component, the rotating frame rotates, causing multiple sets of rotating plates to shift. While the rotating frame rotates, it drives multiple sets of guide gears to shift. Through the meshing connection between the guide gears and the internal gear ring, the guide gears rotate, causing the rotating plates to rotate. This allows the cleaning brushes at both ends of the rotating plates to contact the inner side of the screen, cleaning the screen mesh and preventing the screen from becoming clogged, which would affect the pumping efficiency of the centrifugal pump. Therefore, the working efficiency of the centrifugal pump can be increased.

[0016] 2. In this utility model, through the design of the moving plate and the fixed plate, the sliding block is displaced by the first compression spring, which in turn causes the rotating rod to move. The rotating rod is connected to the rotating plate, which causes the moving plate to move, thereby causing the cleaning brush to move. This allows the cleaning brush to fit against the inner side of the screen, enabling the cleaning brush to effectively clean the screen. When the cleaning brush ages and needs to be replaced after prolonged use, the limiting rod is pulled out of the limiting groove, causing the installation of the fixed plate and the moving plate to be disconnected, allowing the cleaning brush to be replaced and making it convenient to use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the connecting frame structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the rotating frame structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the cleaning component structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the movable plate structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the fixing plate structure of this utility model.

[0023] In the diagram: 1. First flange; 2. Second flange; 3. Connecting frame; 4. Screen; 5. Cleaning assembly; 6. Rotating frame; 7. Rotating plate; 8. Moving plate; 9. Cleaning brush; 10. Internal gear ring; 11. Guide gear; 12. Sliding rod; 13. Sliding block; 14. Rotating rod; 15. First compression spring; 16. Fixed plate; 17. Limiting rod; 18. Second compression spring; 19. Limiting groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. Example

[0025] Please see Figures 1-6 This utility model provides a technical solution:

[0026] A centrifugal pump bottom valve filter device includes a first flange 1 and a second flange 2. The first flange 1 is fixedly installed on the top of the second flange 2, and a connecting frame 3 is fixedly installed on the bottom of the second flange 2. A screen 4 is provided on the outside of the connecting frame 3, and a cleaning component 5 is provided inside the connecting frame 3.

[0027] The cleaning assembly 5 is used to clean the screen 4. The cleaning assembly 5 consists of a rotating frame 6, multiple rotating plates 7, multiple moving plates 8, multiple cleaning brushes 9, an internal gear ring 10, and multiple guide gears 11. The rotating frame 6 is rotatably connected to the inside of the connecting frame 3. The multiple rotating plates 7 are all rotatably connected to the inside of the rotating frame 6. The two moving plates 8 are slidably connected to the two ends of the rotating plates 7 respectively. The cleaning brushes 9 are located at the end of the moving plates 8 away from the rotating plates 7. The internal gear ring 10 is fixedly connected to the bottom of the connecting frame 3. The multiple guide gears 11 are rotatably connected to the four sides of the bottom of the rotating frame 6 respectively. The outer side of the internal gear ring 10 is provided with a protective shell. The protective shell is fixedly connected to the connecting frame 3. The protective shell protects the internal gear ring 10 and prevents water flow from impacting the internal gear ring 10 and affecting the use of the internal gear ring 10 and guide gears 11.

[0028] Furthermore, the guide gear 11 is meshed with the internal gear ring 10, and the guide gear 11 is fixedly connected to the rotating plate 7. The drive end of the waterproof motor is fixedly connected to the outside of the rotating frame 6. When the waterproof motor is started, the rotating frame 6 is rotated, causing multiple sets of rotating plates 7 to move. While the rotating frame 6 is rotating, it drives multiple sets of guide gears 11 to move. Through the meshing connection between the guide gear 11 and the internal gear ring 10, the guide gear 11 rotates, causing the rotating plate 7 to rotate. This allows the cleaning brushes 9 at both ends of the rotating plate 7 to contact the inner side of the screen 4, cleaning the mesh of the screen 4 and preventing the screen 4 from becoming clogged, which would affect the pumping efficiency of the centrifugal pump. Therefore, the working efficiency of the centrifugal pump can be increased.

[0029] The movable plate 8 extends into the interior of the rotating plate 7 and is fixedly connected to a sliding rod 12. Both ends of the sliding rod 12 are slidably connected to sliding blocks 13. The end of the sliding block 13 away from the movable plate 8 is rotatably connected to a rotating rod 14. The end of the rotating rod 14 away from the sliding block 13 is rotatably connected to the rotating plate 7. Both ends of the sliding rod 12 and located outside the two sets of sliding blocks 13 are fitted with first compression springs 15. The first compression springs 15 drive the sliding blocks 13 to move, causing the rotating rod 14 to move. The rotational connection between the rotating rod 14 and the rotating plate 7 causes the movable plate 8 to move, which in turn drives the cleaning brush 9 to move. This allows the cleaning brush 9 to fit against the inner side of the screen 4, enabling the cleaning brush 9 to effectively clean the screen 4.

[0030] Furthermore, a fixed plate 16 is fixedly connected to one end of the cleaning brush 9 near the moving plate 8. The cleaning brush 9 is connected to the moving plate 8 through the fixed plate 16. Limiting rods 17 are slidably connected to both ends of the moving plate 8. A second compression spring 18 is sleeved on the outside of the limiting rod 17. The fixed plate 16 is limited to the limiting rod 17 through two sets of limiting grooves 19. The two ends of the second compression spring 18 are fixedly connected to the limiting rod 17 and the moving plate 8, respectively. When the cleaning brush 9 is worn out after long-term use and needs to be replaced, the limiting rod 17 is pulled out from the inside of the limiting groove 19, so that the installation of the fixed plate 16 and the moving plate 8 is disconnected, so that the cleaning brush 9 can be replaced. The new cleaning brush 9 and the fixed plate 16 are connected to the moving plate 8. The second compression spring 18 drives the limiting rod 17 to move, so that the limiting rod 17 is moved to the inside of the limiting groove 19 and limited to the fixed plate 16, so that the fixed plate 16 is installed inside the moving plate 8, thereby installing the cleaning brush 9.

[0031] This utility model also provides a centrifugal pump, including the centrifugal pump bottom valve filter device provided in any of the above embodiments. Because it has all the technical features of the centrifugal pump bottom valve filter device provided in any of the above embodiments, it has the same technical effect as the centrifugal pump bottom valve filter device.

[0032] In this embodiment, the specific implementation scenario is as follows: During actual use, the waterproof motor is started, driving the rotating frame 6 to rotate, causing multiple sets of rotating plates 7 to shift. Simultaneously, the rotating frame 6 rotates, driving multiple sets of guide gears 11 to shift. Through the meshing connection between the guide gears 11 and the internal gear ring 10, the guide gears 11 rotate, driving the rotating plates 7 to rotate. This allows the cleaning brushes 9 at both ends of the rotating plates 7 to contact the inner side of the screen 4, cleaning the mesh of the screen 4 and preventing clogging, which would affect the pumping efficiency of the centrifugal pump. Therefore, the working efficiency of the centrifugal pump is increased. The first compression spring 15 drives the sliding block 13 to shift, causing the rotating rod 14 to shift. The rotating rod 14 is rotated and connected to the rotating plate 7, causing the moving plate 8 to shift, driving the cleaning... The cleaning brush 9 is displaced so that it fits against the inner side of the screen 4, enabling it to effectively clean the screen 4. When the cleaning brush 9 ages and needs to be replaced after prolonged use, the limiting rod 17 is pulled out of the limiting groove 19, causing the installation of the fixed plate 16 and the moving plate 8 to be disconnected, allowing the cleaning brush 9 to be replaced. The new cleaning brush 9 and the fixed plate 16 are connected to the moving plate 8. The second compression spring 18 drives the limiting rod 17 to move, moving the limiting rod 17 to the inside of the limiting groove 19 and connecting it with the fixed plate 16, so that the fixed plate 16 is installed inside the moving plate 8, thereby installing the cleaning brush 9. Compared with the existing bottom valve filter device, this utility model improves the overall practicality of the bottom valve filter device through its design.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A centrifugal pump foot valve filter device, comprising a first flange (1) and a second flange (2), characterized in that: The first flange (1) is fixedly installed on the top of the second flange (2), and a connecting frame (3) is fixedly installed on the bottom of the second flange (2). A screen (4) is provided on the outside of the connecting frame (3), and a cleaning component (5) is provided inside the connecting frame (3). The cleaning assembly (5) is used to clean the screen (4). The cleaning assembly (5) consists of a rotating frame (6), multiple rotating plates (7), multiple moving plates (8), multiple cleaning brushes (9), an internal gear ring (10), and multiple guide gears (11). The rotating frame (6) is rotatably connected to the inside of the connecting frame (3). Multiple rotating plates (7) are rotatably connected to the inside of the rotating frame (6). Two moving plates (8) are slidably connected to the two ends of the rotating plate (7). The cleaning brush (9) is located at the end of the moving plate (8) away from the rotating plate (7). The internal gear ring (10) is fixedly connected to the bottom end inside the connecting frame (3). Multiple guide gears (11) are rotatably connected to the four sides of the bottom of the rotating frame (6).

2. The centrifugal pump bottom valve filter device according to claim 1, characterized in that: The guide gear (11) is meshed with the internal gear ring (10), the guide gear (11) is fixedly connected to the rotating plate (7), and the drive end of the waterproof motor is fixedly connected to the outer side of the rotating frame (6).

3. A centrifugal pump foot valve filter device according to claim 1, characterized in that: The movable plate (8) extends into the interior of the rotating plate (7) and is fixedly connected to a sliding rod (12). Both ends of the sliding rod (12) are slidably connected to sliding blocks (13). The end of the sliding block (13) away from the movable plate (8) is rotatably connected to a rotating rod (14).

4. A centrifugal pump foot valve filter device according to claim 3, characterized in that: The end of the rotating rod (14) away from the sliding block (13) is rotatably connected to the rotating plate (7), and the two ends of the sliding rod (12) and located outside the two sets of sliding blocks (13) are fitted with first compression springs (15).

5. A centrifugal pump bottom valve filter device according to claim 1, characterized in that: The cleaning brush (9) is fixedly connected to a fixed plate (16) at one end near the moving plate (8). The cleaning brush (9) is connected to the moving plate (8) through the fixed plate (16). Both ends of the moving plate (8) are slidably connected to limit rods (17). A second compression spring (18) is sleeved on the outside of the limit rods (17).

6. A centrifugal pump foot valve filter device according to claim 5, characterized in that: The fixed plate (16) is connected to the limiting rod (17) through two sets of limiting grooves (19), and the two ends of the second compression spring (18) are fixedly connected to the limiting rod (17) and the moving plate (8) respectively.

7. A centrifugal pump, comprising a centrifugal pump inlet, characterized in that, It also includes a centrifugal pump foot valve filter device as described in any one of claims 1 to 6.

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