Pre-filtering submersible pump

Abstract

The utility model provides a pre-filtering submersible pump, and belongs to the technical field of water pumps. The pre-filtering submersible pump solves the problem that a filter screen of an existing water pump is prone to being stuck and blocked, and comprises a water pump body internally provided with a motor and an impeller, a filtering base is arranged at the bottom of the water pump body, a plurality of overflowing holes are formed in the filtering base, a driving disc is arranged in the filtering base, and a driving wheel and a driven wheel are arranged in the driving disc. The driving wheel is provided with a driving protruding block, the driven wheel is provided with a plurality of embedding grooves for embedding the driving protruding block, the driving wheel is provided with a driving rod, guiding protruding blocks are arranged between the overflowing holes, the driven wheel is provided with a driving wheel rod, guiding rods are arranged on the two sides of the driving wheel rod, and a filtering ring net is arranged on the outer wall of the filtering base. The inner wall of the filtering ring net abuts against the guide protruding block and the driving wheel rod, and the outer wall of the filtering ring net abuts against the guide rod.

Description

Technical Field

[0001] This utility model belongs to the field of water pump technology, and relates to a submersible pump, and particularly to a pre-filter submersible pump. Background Technology

[0002] A submersible pump is a drainage device that integrates a motor and a water pump. It is completely submerged in liquid during operation. The motor drives the impeller to rotate, generating centrifugal force to pressurize and deliver water to a designated location. It features a compact structure, excellent sealing, and self-priming without the need for priming. It is suitable for various applications such as deep well water extraction, farmland irrigation, building drainage, sewage treatment, and pond circulation.

[0003] Submersible pumps are usually equipped with filters. The main purpose of the filters is to prevent impurities in the water (such as mud, weeds, debris, etc.) from entering the pump body, avoiding clogging of the impeller, wear of the mechanical seal, or damage to the motor, which would affect the pump's working efficiency and service life. However, fixed filters can become clogged due to excessive foreign matter adsorption caused by the continuous operation of the pump, leading to the pump running dry and potentially burning out. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the prior art by providing a submersible pump with an automatically rotating filter screen to prevent clogging.

[0005] The objective of this utility model can be achieved through the following technical solution: A pre-filter submersible pump, characterized in that it includes a pump body with an internal motor and impeller, a filter base at the bottom of the pump body, a plurality of flow holes on the filter base, a drive disc inside the filter base, a drive wheel and a driven wheel inside the drive disc, a drive protrusion on the drive wheel, a plurality of fitting grooves on the driven wheel to fit the drive protrusion, a drive rod on the drive wheel, guide protrusions between the flow holes, a drive wheel rod on the driven wheel, guide rods on both sides of the drive wheel rod, a filter ring mesh on the outer wall of the filter base, the inner wall of the filter ring mesh abutting against the guide protrusions and the drive wheel rod, and the outer wall of the filter ring mesh abutting against the guide rods.

[0006] In the aforementioned pre-filter submersible pump, the top of the drive rod is provided with a connecting thread, the top of the drive rod is connected to the impeller, the filter base is provided with a locking cover, the locking cover is provided with a connecting bearing, and the drive rod is fixed to the connecting bearing.

[0007] In the aforementioned pre-filter submersible pump, a squeeze wheel is provided on one side of the drive wheel rod.

[0008] Compared with existing technologies, this pre-filter submersible pump keeps the filter screen at the flow orifice clean by setting a continuously moving filter ring. When the flow orifice is completely blocked, the squeezing wheel and drive wheel rod can assist in cleaning the filter ring, reducing filter screen blockage and extending maintenance intervals. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this pre-filter submersible pump.

[0010] Figure 2 This is a schematic diagram of the structure of this pre-filter submersible pump.

[0011] Figure 3 This is a schematic diagram of the filterless screen replacement structure of this pre-filtered submersible pump.

[0012] Figure 4 This is a schematic diagram of the filter ring connection of the pre-filter submersible pump.

[0013] Figure 5 This is a schematic diagram of the active and passive impellers of this pre-filter submersible pump.

[0014] Figure 6 This is a schematic diagram of the internal power connection of this pre-filter submersible pump.

[0015] Figure 7 This is a partial cross-sectional structural diagram of the power connection of the pre-filter submersible pump.

[0016] In the diagram, 1. Pump body; 2. Filter ring; 3. Locking cover; 4. Filter base; 5. Guide protrusion; 6. Flow hole; 7. Guide rod; 8. Drive disc; 9. Extrusion wheel; 10. Drive wheel rod; 11. Drive protrusion; 12. Drive wheel; 13. Driven wheel; 14. Fitting groove; 15. Motor; 16. Impeller; 17. Drive rod; 18. Connecting thread; 19. Connecting bearing. Detailed Implementation

[0017] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0018] like Figures 1-7As shown, this pre-filter submersible pump includes a pump body 1 with an internal motor 15 and impeller 16. A filter base 4 is located at the bottom of the pump body 1. The filter base 4 has several flow holes 6. A drive disc 8 is located inside the filter base 4, containing a drive wheel 12 and a driven wheel 13. The drive wheel 12 has a drive protrusion 11, and the driven wheel 13 has several fitting grooves 14 for engaging the drive protrusion 11. A drive rod 17 is located on the drive wheel 12, and guide protrusions 5 are located between the flow holes 6. A drive wheel rod 10 is located on the driven wheel 13. Guide rods 7 are provided on both sides of the filter base 4. A filter ring 2 is provided on the outer wall of the filter base 4. The inner wall of the filter ring 2 abuts against the guide protrusion 5 and the drive wheel rod 10, and the outer wall of the filter ring 2 abuts against the guide rod 7. When the water pump starts, the motor 15 drives the drive impeller 16 to rotate. The drive rod 17 rotates with the impeller 16 and controls the passive wheel 13 to rotate intermittently through the drive protrusion 11. The drive wheel rod 10 on the passive wheel 13 controls the filter ring 2 to rotate. When the part that adsorbs impurities moves to the drive wheel rod 10, it passes through the flow hole 6 and the impurities are detached. After cleaning, part of it re-participates in the interception and filtration.

[0019] Preferably, the top of the drive rod 17 is provided with a connecting thread 18, and the top of the drive rod 17 is connected to the impeller 16. The filter base 4 is provided with a locking cover 3, and the locking cover 3 is provided with a connecting bearing 19. The drive rod 17 is fixed to the connecting bearing 19 and connected to the impeller 16 through the connecting thread 18. When the locking cover 3 is installed, the two ends of the drive rod 17 connected by the bearing can rotate more smoothly, reducing shaking and friction.

[0020] Preferably, a squeezing wheel 9 is provided on one side of the drive wheel rod 10. The squeezing wheel 9 and the drive wheel rod 10 squeeze the filter ring 2, reducing slippage when the filter ring 2 rotates. At the same time, the squeezing can clean some foreign objects on the filter ring 2, causing the sticky and clogged foreign objects to fall off.

[0021] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0022] Although this document frequently uses terms such as pump body 1, filter ring 2, locking cover 3, filter base 4, guide protrusion 5, flow hole 6, guide rod 7, drive disc 8, extrusion wheel 9, drive wheel rod 10, drive protrusion 11, driving wheel 12, driven wheel 13, fitting groove 14, motor 15, impeller 16, drive rod 17, connecting thread 18, connecting bearing 19, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A pre-filter submersible pump, characterized in that, The pump body (1) includes a motor (15) and an impeller (16) inside. A filter base (4) is located at the bottom of the pump body (1). Several flow holes (6) are provided on the filter base (4). A drive disc (8) is located inside the filter base (4). A drive wheel (12) and a driven wheel (13) are located inside the drive disc (8). A drive protrusion (11) is provided on the drive wheel (12), and several engaging drive protrusions (11) are provided on the driven wheel (13). The fitting groove (14) is provided with a drive rod (17) on the drive wheel (12), and guide protrusions (5) are provided between the flow holes (6). The passive wheel (13) is provided with a drive wheel rod (10). Guide rods (7) are provided on both sides of the drive wheel rod (10). The filter base (4) is provided with a filter ring mesh (2). The inner wall of the filter ring mesh (2) abuts against the guide protrusions (5) and the drive wheel rod (10), and the outer wall of the filter ring mesh (2) abuts against the guide rods (7).

2. The pre-filter submersible pump according to claim 1, characterized in that, The drive rod (17) is provided with a connecting thread (18) at the top. The top of the drive rod (17) is connected to the impeller (16). The filter base (4) is provided with a locking cover (3). The locking cover (3) is provided with a connecting bearing (19). The drive rod (17) is fixed to the connecting bearing (19).

3. A pre-filter submersible pump according to claim 1, characterized in that, The drive wheel rod (10) is provided with a compression wheel (9) on one side.

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