High efficiency sewage pump

Abstract

The utility model provides a kind of high-efficiency sewage pump, belong to pump field.It solves the problem that existing sewage pump is easily blocked by impurities.The high-efficiency sewage pump, including the pump body with water inlet end and water outlet end, impeller is arranged in the pump body, cutting device is arranged in the water inlet end of pump body, for chopping impurities and preventing impurities winding, cutting device is coaxially arranged with impeller, and synchronous rotation is driven by driving motor, cutting device includes tool holder shaft and multiple blades, multiple blades are distributed in the outside of tool holder shaft in circumferential interval, and form multiple layers cutting area, the diameter of multiple layers cutting area gradually decreases from top to bottom, the front end of each blade is provided with blade part, the outside of tool holder shaft extends multiple installation platforms radially outward, and the blade is fixed on installation platform by locking bolt, and installation platform and tool holder shaft are integrally formed structure.The utility model has the advantages of high efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of pumps, and relates to a sewage pump, and particularly to a high-efficiency sewage pump. Background Technology

[0002] In municipal sewage, industrial production, and agricultural irrigation, sewage pumps are critical equipment for transporting wastewater containing solid particles, fibers, and other impurities. During operation, traditional sewage pumps are prone to entanglement of flexible impurities such as long fibers and plastic products on the impeller, while hard solid particles may become stuck in the flow channel. This leads to a sharp decline in pump efficiency, increased energy consumption, and even motor overload and burnout or pump blockage, severely impacting the reliability and lifespan of the equipment. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a high-efficiency sewage pump.

[0004] The purpose of this utility model can be achieved through the following technical solution: a high-efficiency sewage pump, including a pump body with an inlet end and an outlet end, wherein an impeller is provided in the pump body, characterized in that a cutting device is provided inside the inlet end of the pump body for crushing impurities and preventing impurities from entangled. The cutting device is coaxially arranged with the impeller and is driven to rotate synchronously by a drive motor. The cutting device includes a blade holder shaft and multiple blades. The multiple blades are circumferentially spaced outside the blade holder shaft and form a multi-layer cutting area. The diameter of the multi-layer cutting area gradually decreases from top to bottom. Each blade has a cutting edge at its front end. Multiple mounting platforms extend radially outward from the outside of the blade holder shaft. The blades are fixed to the mounting platforms by locking bolts. The mounting platforms and the blade holder shaft are integrally formed.

[0005] In the aforementioned high-efficiency sewage pump, the blade holder shaft is fixed to the end of the output shaft of the drive motor by connecting parts and bolts, and is coaxially arranged with the impeller.

[0006] In the aforementioned high-efficiency sewage pump, one end of the blade has an arc-shaped curved surface structure, and the arc-shaped curved surface of the blade faces upward or downward.

[0007] In the aforementioned high-efficiency sewage pump, the multi-layer cutting area includes at least an upper cutting area and a lower cutting area, wherein the diameter of the upper cutting area is larger than the diameter of the lower cutting area.

[0008] In the aforementioned high-efficiency sewage pump, the blades located in different cutting zones are arranged in an axially staggered manner.

[0009] In the aforementioned high-efficiency sewage pump, the mounting platform and the tool holder shaft are integrally cast.

[0010] In the aforementioned high-efficiency sewage pump, the head of the locking bolt is recessed into the blade or mounting platform.

[0011] Compared to existing technologies, this high-efficiency sewage pump progressively crushes impurities through multi-layered cutting zones with increasing diameters, resulting in high efficiency and effective prevention of entanglement. The axially staggered arrangement of the blades expands the cutting range and eliminates dead zones. Furthermore, the integrated structure of the blade holder shaft and mounting platform ensures overall robustness and durability, while the countersunk bolt design optimizes water flow and prevents impurities from adhering. These features collectively significantly improve the pump's sewage discharge capacity, reliability, and service life. Attached Figure Description

[0012] Figure 1 This is a half-section structural diagram of this high-efficiency sewage pump.

[0013] Figure 2 This is a three-dimensional structural diagram of the cutting device of this high-efficiency sewage pump.

[0014] In the diagram, 1 is the pump body; 2 is the inlet end; 3 is the outlet end; 4 is the impeller; 5 is the cutter head shaft; 6 is the blade; 7 is the cutting edge; 8 is the mounting platform; 9 is the locking bolt; 10 is the connecting piece; and 11 is the bolt. Detailed Implementation

[0015] 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.

[0016] like Figure 1 , Figure 2 As shown, this high-efficiency sewage pump includes a pump body 1 with an inlet end 2 and an outlet end 3. An impeller 4 is installed inside the pump body 1. A cutting device is installed inside the inlet end 2 of the pump body 1 to crush impurities and prevent impurities from entangled. The cutting device is coaxially arranged with the impeller 4 and is driven to rotate synchronously by a drive motor. The cutting device includes a blade holder shaft 5 and multiple blades 6. The multiple blades 6 are circumferentially spaced outside the blade holder shaft 5 and form a multi-layer cutting area. The diameter of the multi-layer cutting area gradually decreases from top to bottom. Each blade 6 has a cutting edge 7 at its front end. Multiple mounting platforms 8 extend radially outward from the outside of the blade holder shaft 5. The blades 6 are fixed to the mounting platforms 8 by locking bolts 9. The mounting platforms 8 and the blade holder shaft 5 are integrally formed.

[0017] The tool holder shaft 5 is fixed to the output shaft end of the drive motor via a connector 10 and bolts 11, and is coaxially arranged with the impeller 4. One end of the blade 6 has an arc-shaped curved surface, and the arc-shaped curved surface of the blade 6 faces upward or downward. The multi-layer cutting area includes at least an upper cutting area and a lower cutting area, with the diameter of the upper cutting area being larger than the diameter of the lower cutting area. The blades 6 located in different cutting areas are staggered axially. The mounting platform 8 is integrally cast with the tool holder shaft 5. The head of the locking bolt 9 is recessed into the blade 6 or the mounting platform 8.

[0018] The multi-layered, progressively increasing diameter cutting zones enable the gradual crushing of impurities, resulting in high efficiency and effective prevention of entanglement. The axially staggered arrangement of the blades 6 expands the cutting range and eliminates dead zones. Furthermore, the integrated structure of the blade holder shaft 5 and the mounting platform 8 ensures overall robustness and durability, while the countersunk bolt design optimizes water flow and prevents impurities from adhering. These features collectively significantly improve the pump's sewage discharge capacity, reliability, and service life.

[0019] When the pump starts, the drive motor synchronously rotates the impeller 4 and the cutting device. Water flows into the pump body 1 from the inlet 2, and the impurities it carries (such as fibers, solid particles, etc.) first pass through the cutting device. The cutting device consists of a blade holder shaft 5 and multiple circumferentially distributed blades 6. The blades 6 form multi-layer cutting areas, and their diameter gradually decreases from top to bottom. This design allows impurities to undergo multi-stage cutting as they pass through the pump, effectively preventing impurities from entangled in the impeller 4 or clogging the flow channel. The cutting edge 7 at the front end of the blade 6 directly participates in the cutting, and the arc-shaped curved surface structure of the blade 6 can move upward or downward, helping to guide the water flow and impurities, enhancing cutting efficiency. In addition, the blades 6 are fixed to the mounting platform 8 of the blade holder shaft 5 by locking bolts 9. The mounting platform 8 and the blade holder shaft 5 are integrally formed, ensuring the stability and rigidity of the overall structure.

[0020] 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.

[0021] Although this document uses a considerable amount of technical terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A high-efficiency sewage pump, comprising a pump body (1) with an inlet end (2) and an outlet end (3), wherein an impeller (4) is disposed within the pump body (1), characterized in that, The pump body (1) is equipped with a cutting device inside the water inlet end (2) for crushing impurities and preventing impurities from tangling. The cutting device is coaxially arranged with the impeller (4) and is driven to rotate synchronously by a drive motor. The cutting device includes a blade holder shaft (5) and multiple blades (6). The multiple blades (6) are circumferentially spaced outside the blade holder shaft (5) and form a multi-layer cutting area. The diameter of the multi-layer cutting area gradually decreases from top to bottom. Each blade (6) has a cutting edge (7) at its front end. Multiple mounting platforms (8) extend radially outward from the outside of the blade holder shaft (5). The blade (6) is fixed to the mounting platform (8) by locking bolts (9). The mounting platform (8) and the blade holder shaft (5) are integrally formed.

2. A high efficiency sewage pump according to claim 1 wherein, The tool holder shaft (5) is fixed to the end of the output shaft of the drive motor by a connector (10) and a bolt (11), and is coaxially arranged with the impeller (4).

3. A high efficiency sewage pump as claimed in claim 1, wherein One end of the blade (6) has an arc-shaped curved surface structure, and the arc-shaped curved surface of the blade (6) faces upward or downward.

4. A high efficiency sewage pump in accordance with claim 1 wherein, The multi-layer cutting area includes at least an upper cutting area and a lower cutting area, wherein the diameter of the upper cutting area is larger than the diameter of the lower cutting area.

5. A high efficiency sewage pump as claimed in claim 3, wherein The blades (6) located in different cutting areas are arranged in an axially staggered manner.

6. A high efficiency sewage pump in accordance with claim 1 wherein, The mounting platform (8) and the tool holder shaft (5) are integrally cast.

7. A high-efficiency sewage pump according to claim 1, characterized in that, The head of the locking bolt (9) is recessed into the blade (6) or mounting plate (8).

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