Filtering base device on submersible pump

Abstract

The utility model relates to a filtering base device on a submersible pump, which comprises a base and a bottom cover, both the base and the bottom cover are positioned at the water absorption end of a main pump shell, a water through hole is arranged on the base, a water inlet is arranged on the circumferential wall of the bottom cover, and the base and the bottom cover are sequentially arranged and fixed along the height direction of the main pump shell. Water flow enters through the water inlet and is communicated with the water suction end of the main pump shell through the water through hole. A filter screen frame is coaxially mounted in the bottom cover, the filter screen frame can rotate along the inner circumferential rotating wall of the bottom cover through external force, and filter screen grids in the filter screen frame are in one-to-one correspondence with the water inlets; when water is sucked, a user adjusts the rotating angle of the filter screen frame, so that the size of a closed filter opening between the filter screen grid and the water inlet is adjusted, and the filter isolation of dirt with different particle sizes is realized; the utility model has the advantages of simple structure and convenience in operation, disassembly and assembly.

Description

Technical Field

[0001] This utility model belongs to the field of submersible pump technology, and in particular relates to a filter base device on a submersible pump. Background Technology

[0002] Submersible pumps operate by submerging the entire unit in water. Their working environments vary widely. In harsh environments like sewage, debris is often drawn into the pump's inlet. Large pieces of debris, in particular, can potentially impact the pump's performance and safety. Current technology typically uses a fixed mesh screen at the inlet to isolate debris. However, this fixed screen cannot be adjusted according to the size of particles in the water. If the screen holes become clogged with debris, it affects pump performance, and removing debris stuck in the screen holes is inconvenient. Alternatively, a sliding mesh screen could be used, employing a sliding mechanism with up-and-down levers. This design is complex, inconvenient to assemble and disassemble, and difficult to operate. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a filter base device for a submersible pump that is simple in structure, easy to operate and disassemble.

[0004] The purpose of this utility model is achieved through the following technical solution: A filter base device on a submersible pump includes a base and a bottom cover. Both the base and the bottom cover are located at the suction end of the main pump housing. The base has a water passage hole, and the bottom cover has a water inlet on its circumferential wall. The base and the bottom cover are arranged and fixed sequentially along the height direction of the main pump housing. Water flows in through the water inlet and communicates with the suction end of the main pump housing through the water passage hole. A filter screen frame is coaxially installed inside the bottom cover. The filter screen frame can rotate along the inner circumferential wall of the bottom cover by external force, and the filter screen grids inside the filter screen frame correspond one-to-one with the water inlets. During water pumping, the user adjusts the rotation angle of the filter screen frame to adjust the size of the closed filter opening between the filter screen grids and the water inlets, thereby achieving the filtration and isolation of dirt of different particle sizes. This device has the advantages of simple structure, convenient operation, and easy assembly and disassembly.

[0005] The beneficial effects of this utility model are as follows: Compared with the prior art, by coaxially installing a filter screen frame between the bottom cover and the base, and by rotating the filter screen frame along the inner circumferential rotating wall of the bottom cover, the filter screen grid is closed with the water inlet to achieve the filtration and isolation of large pieces of dirt.

[0006] Preferably, the outer wall of the filter mesh grid of the filter frame is fitted to the inner wall of the base cover, and the filter frame is limited between the base cover and the base; the above structure makes the filter frame more stable and prevents it from shaking when rotating coaxially along the base cover.

[0007] Preferably, the upper end of the filter frame is provided with a limiting support block, which is arranged sequentially along the outer peripheral wall of the filter frame. The upper surface of the bottom cover corresponding to the limiting support block is provided with a support groove. The filter frame is placed between the bottom cover and the base by the cooperation of the limiting support block and the support groove. With the above structure, the limiting support block can place the filter frame on the bottom cover, which facilitates installation and improves the stability of operation during use.

[0008] Preferably, the bottom surface of the base is provided with a pressure block, the pressure block and the limiting support block are distributed in a corresponding manner, and the limiting support block is located between the support groove and the pressure block to achieve upper and lower limiting; through the above structure, the filter screen frame is not easy to axially shake when the submersible pump is working, and the stability of the submersible pump is better during operation.

[0009] Preferably, the base cover has studs on its mounting groove, and each water inlet has studs on both sides. The base corresponding to the studs has screw holes, and the bottom surface of the base also has an arc-shaped limiting strip. The arc-shaped limiting strip is located on the circumferential side of the screw holes, and when the base cover and the base are installed together, the arc-shaped limiting strip is limited to the outer circumferential wall of the studs. With the above structure, the installation of the base cover and the base is more convenient, the installation efficiency is higher, and the stability after installation is better.

[0010] Preferably, the number of limiting blocks is equal to the number of filter screens, and the limiting blocks are located above the water inlet and move within the range of the two stud intervals on both sides of the water inlet; through the above structure, the range of movement between the filter screen and the water inlet for closing or opening can be controlled.

[0011] Preferably, both ends of the limiting support block are provided with arc-shaped grooves. When the filter screen and the water inlet are closed or open, the two arc-shaped grooves on the limiting support block abut against one of the studs on both sides of the water inlet. The arc-shaped grooves effectively limit the closure or opening between the filter screen and the water inlet.

[0012] Preferably, the filter frame has a lever on its outer peripheral wall. The lever is located at one of the water inlets and protrudes from the outside of the base cover. The bottom surface of the water inlet has two protrusions on both sides that cooperate with the lever. The upper side of the water inlet has an indicator point for correct installation of the filter frame. The indicator point is located at the center of the two protrusions. The lower side of the water inlet has an indicator strip for indicating whether the filter frame is rotated to close or open. By setting the two protrusions, the operator can know whether the lever has been turned to the correct position during the lever's movement. It also serves as a limit for the closing or opening of the filter frame and the base cover.

[0013] Preferably, a limiting strip is provided on the bottom surface of the bottom cover, the bottom of the filter frame is limited on the limiting strip, and the bottom of the filter frame is provided with a convex strip with an arc-shaped cross-section; through the above structure, the filter frame and the bottom cover are well limited in the circumferential direction, and the arc-shaped convex strip makes the filter frame rotate more smoothly.

[0014] Preferably, the upper end face of the side wall of the bottom cover and the lower end face of the side wall of the main pump housing are provided with limiting grooves, and the front and back sides of the base corresponding to the limiting grooves are provided with limiting protrusions. With the above structure, the assembly process is more convenient, misalignment will not occur, and the assembly efficiency is higher. Attached Figure Description

[0015] Figure 1 This is a three-dimensional exploded view of the filter base device on the submersible pump of this utility model.

[0016] Figure 2 This is a schematic diagram of the main cross-sectional structure of the filter base device of this utility model.

[0017] Figure 3 This is a three-dimensional structural diagram of the base of this utility model.

[0018] Figure 4 This is a three-dimensional structural diagram of the base cover of this utility model.

[0019] Figure 5 This is a three-dimensional structural diagram of the filter frame of this utility model.

[0020] The labels in the attached diagram are as follows: 1. Base; 11. Water inlet; 12. Pressure block; 13. Screw hole; 14. Arc-shaped limiting strip; 2. Bottom cover; 21. Water inlet; 22. Support groove; 23. Screw; 24. Protrusion; 25. Indicator point; 26. Indicator strip; 27. Limiting strip; 3. Main pump housing; 4. Filter screen frame; 41. Filter screen grid; 42. Limiting support block; 43. Arc-shaped groove; 44. Push block; 45. Protrusion; 5. Limiting slot; 6. Limiting protrusion. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings: as shown in the drawings Figures 1 to 5 As shown, this utility model includes a base 1 and a bottom cover 2, both located at the suction end of the main pump housing 3. The base 1 has a water passage hole 11, and the bottom cover 2 has a water inlet 21 on its circumferential wall. The base 1 and bottom cover 2 are arranged and fixed sequentially along the height direction of the main pump housing 3. Water flows in through the water inlet 21 and communicates with the suction end of the main pump housing 3 through the water passage hole 11. A filter screen frame 4 is coaxially mounted inside the bottom cover 2. The filter screen frame 4 can rotate along the inner circumferential wall of the bottom cover 2 under external force, and the filter screen grids 41 inside the filter screen frame 4 correspond one-to-one with the water inlets 21. During water suction, the user adjusts the rotation angle of the filter screen frame 4 to adjust the size of the closed filter opening between the filter screen grids 41 and the water inlets 21, thereby achieving filtration and isolation of contaminants of different particle sizes. The particle size of the contaminants is 5mm-35mm.

[0022] When the base 1 and the bottom cover 2 are used together, a sewage pump with a particle size of 35mm can be used.

[0023] When using base 1 alone, it can achieve a lower water level pumping function than when using the combined base.

[0024] The outer wall of the filter mesh grid 41 of the filter frame 4 is fitted with the inner wall of the base cover 2, and the filter frame 4 is limited between the base cover 2 and the base 1.

[0025] The upper end of the filter frame 4 is provided with a limiting support block 42. The limiting support block 42 is arranged sequentially along the outer periphery of the filter frame 4. The upper surface of the bottom cover 2 corresponding to the limiting support block 42 is provided with a support groove 22. By cooperating with the limiting support block 42 and the support groove 22, the filter frame 4 is placed between the bottom cover 2 and the base 1.

[0026] The bottom surface of the base 1 is provided with a pressure block 12, which is distributed in a corresponding manner with the limiting support block 42. The limiting support block 42 is located between the support groove 22 and the pressure block 12 and achieves upper and lower limit.

[0027] The base cover 2 has a stud 23 on the mounting groove 22, and each inlet 21 has a stud 23 on both sides. The base 1 corresponding to the stud 23 has a screw hole 13, and the bottom end face of the base 1 is also provided with an arc-shaped limiting strip 14. The arc-shaped limiting strip 14 is located on the circumferential side of the screw hole 13, and when the base cover 2 and the base 1 are installed together, the arc-shaped limiting strip 14 is limited on the outer circumferential wall of the stud 23.

[0028] The number of limiting blocks 42 is equal to the number of filter screens 41, and the limiting blocks 42 are located above the inlet 21 and move within the range of the two studs 23 on both sides of the inlet 21. Both ends of the limiting blocks 42 are provided with arc-shaped grooves 43. When the filter screens 41 and the inlet 21 are closed or open, the two arc-shaped grooves 43 on the limiting blocks 42 abut against one of the studs 23 on both sides of the inlet 21.

[0029] A lever 44 is provided on the outer peripheral wall of the filter screen frame 4. The lever 44 is located at one of the water inlets 21 and protrudes from the outside of the bottom cover 2. Two protrusions 24 that cooperate with the lever 44 are provided on both sides of the bottom surface of the water inlet 21. An indicator point 25 is provided on the upper side of the water inlet 21 to facilitate the correct installation of the filter screen frame. The indicator point 25 is located at the center of the two protrusions 24. An indicator strip 26 is provided on the lower side of the water inlet 21 to indicate whether the filter screen frame is rotated to close or open.

[0030] A limiting strip 27 is provided on the bottom surface of the base cover 2. The bottom of the filter screen frame 4 is limited by the limiting strip 27, and a raised strip 45 with an arc cross-section is provided on the bottom of the filter screen frame 4. Limiting grooves 5 are provided on the upper end surface of the side wall of the base cover 2 and the lower end surface of the side wall of the main pump housing 3. Limiting protrusions 6 are provided on both the front and back sides of the base 1 corresponding to the limiting grooves 5.

[0031] The installation principle of this utility model is as follows: First, the filter screen frame 4 is installed inside the base cover 2, and the lever 44 of the filter screen frame 4 is aligned with the water inlet 21 with the indicator point 25. The limiting support block 42 is placed on the support groove 22. Then, the base 1 is aligned and locked with the limiting slot 5 of the main pump housing 3 through the limiting protrusion 6. Finally, the base cover 2 with the filter screen frame 4 is installed with the base 1. During the installation process, the limiting slot 5 on the base cover 2 is aligned and locked with the limiting protrusion 6 of the base 1. The screws are tightened and fixed to the main pump housing 3 by passing through the stud 23 and the screw hole 13.

[0032] The operating principle of this utility model is as follows: depending on the water quality, the filter screen frame 4 is rotated coaxially along the inner circumferential rotating wall of the bottom cover 2 by moving the toggle block 44. If the water quality is good and there are no large debris, the filter screen grid 41 and the water inlet 21 are in the open state. If the water quality is poor and there are large debris, the filter screen grid 41 and the water inlet 21 are closed to filter and isolate large debris.

[0033] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A filter base device for a submersible pump, comprising a base (1) and a bottom cover (2), characterized in that: The base (1) and the bottom cover (2) are both located at the suction end of the main pump housing (3). The base (1) is provided with a water passage hole (11), and the bottom cover (2) is provided with a water inlet (21) on its circumferential wall. The base (1) and the bottom cover (2) are arranged and fixed along the height direction of the main pump housing (3). Water flows in through the water inlet (21) and communicates with the suction end of the main pump housing (3) through the water passage hole (11). The bottom cover (2) is coaxially mounted inside. The filter frame (4) is installed in a way that allows it to rotate along the inner circumferential wall of the bottom cover (2) by external force. The filter grid (41) inside the filter frame (4) corresponds one-to-one with the water inlet (21). When pumping water, the user can adjust the rotation angle of the filter frame (4) to adjust the size of the closed filter opening between the filter grid (41) and the water inlet (21) to achieve the filtration and isolation of dirt of different particle sizes.

2. The filter base device on the submersible pump according to claim 1, characterized in that: The outer wall of the filter mesh grid (41) of the filter mesh frame (4) is in contact with the inner wall of the base cover (2), and the filter mesh frame (4) is limited between the base cover (2) and the base (1).

3. The filter base device on the submersible pump according to claim 1, characterized in that: The upper end of the filter frame (4) is provided with a limiting support block (42). The limiting support block (42) is arranged sequentially along the outer peripheral wall of the filter frame (4). The upper surface of the bottom cover (2) corresponding to the limiting support block (42) is provided with a support groove (22). The filter frame (4) is placed between the bottom cover (2) and the base (1) by the cooperation of the limiting support block (42) and the support groove (22).

4. The filter base device on the submersible pump according to claim 3, characterized in that: The bottom end face of the base (1) is provided with a pressure block (12), the pressure block (12) and the limiting support block (42) are distributed in a corresponding manner, and the limiting support block (42) is located between the support groove (22) and the pressure block (12) to achieve upper and lower limit.

5. The filter base device on the submersible pump according to claim 3, characterized in that: The base cover (2) has a stud (23) on its mounting groove (22), and each water inlet (21) has a stud (23) on both sides. The base (1) corresponding to the stud (23) has a screw hole (13), and the bottom surface of the base (1) is also provided with an arc-shaped limiting strip (14). The arc-shaped limiting strip (14) is located on the circumferential side of the screw hole (13), and when the base cover (2) and the base (1) are installed together, the arc-shaped limiting strip (14) is limited to the outer circumferential wall of the stud (23).

6. The filter base device on the submersible pump according to claim 5, characterized in that: The number of the limiting support blocks (42) is equal to the number of the filter screen (41), and the limiting support blocks (42) are located above the water inlet (21) and move within the range of the two studs (23) on both sides of the water inlet (21).

7. The filter base device on the submersible pump according to claim 6, characterized in that: Both ends of the limiting support block (42) are provided with arc grooves (43). When the filter screen (41) and the water inlet (21) are closed or open, the two arc grooves (43) on the limiting support block (42) abut against one of the studs (23) on both sides of the water inlet (21).

8. The filter base device on the submersible pump according to claim 1, characterized in that: The filter screen frame (4) has a lever (44) on its outer peripheral wall. The lever (44) is located at one of the water inlets (21) and protrudes from the outside of the bottom cover (2). The bottom surface of the water inlet (21) has two protrusions (24) that cooperate with the lever (44). The upper side of the water inlet (21) has an indicator point (25) to facilitate the correct installation of the filter screen frame. The indicator point (25) is located at the center of the two protrusions (24). The lower side of the water inlet (21) has an indicator strip (26) for indicating whether the filter screen frame is rotated to close or open.

9. The filter base device on the submersible pump according to claim 1, characterized in that: The bottom surface of the bottom cover (2) is provided with a limiting strip (27), the bottom of the filter frame (4) is limited on the limiting strip (27), and the bottom of the filter frame (4) is provided with a convex strip (45) with an arc cross-section.

10. The filter base device on the submersible pump according to claim 1, characterized in that: The upper side wall of the bottom cover (2) and the lower side wall of the main pump housing (3) are provided with limiting grooves (5), and the front and back sides of the base (1) corresponding to the limiting grooves (5) are provided with limiting protrusions (6).

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