一种流道式污水泵叶轮
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HAICHENG SANYU PUMP IND CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional sewage pump impellers are prone to clogging, especially due to the entanglement of long fiber impurities and the collision and retention of solid particles in the confluence area, which leads to a decrease in operating efficiency and reliability.
Design a flow channel type sewage pump impeller with blades arranged in a curved shape to form two independent flow channels, expand the flow channel space, optimize the water flow path, reduce hydraulic loss, and ensure timely liquid outflow through the water distribution chamber.
It effectively prevents clogging, improves the performance and operational stability of sewage pumps, ensures smooth liquid flow, and avoids fiber entanglement and particle collision.
Smart Images
Figure CN224515464U_ABST
Abstract
Claims
1. A flow channel type sewage pump impeller, comprising an impeller assembled in a volute, the impeller including an impeller front cover plate, an impeller rear cover plate, and blades located in a cavity between the impeller front cover plate and the impeller rear cover plate, wherein the impeller front cover plate has a liquid inlet at its center, characterized in that: The blades are at least two in number and are symmetrically distributed in a curved shape in the cavity. One end of each blade is connected to the liquid inlet, and the other end is connected to the outer edge of the impeller front cover plate and the impeller rear cover plate to form a liquid outlet. A flow channel for liquid flow is formed between the inner wall of the blade and the outer wall of the opposite blade along the direction from the liquid inlet to the liquid outlet.
2. A channel impeller for a channel sewage pump according to claim 1, characterized in that: The flow channel includes an outflow cavity near the inlet and a water-spraying cavity that covers the entire back of the blade under the upper projection, the water-spraying cavity being connected to the entire outlet.
3. A channel impeller for a channel sewage pump according to claim 1, characterized in that: The inner wall surface of the blade is a curved arc surface formed by the continuous connection of a first part of the arc surface and a second part of the arc surface. The blade is located at the end of the inlet facing the second part of the arc surface.
4. A channel impeller for a channel sewage pump according to claim 3, characterized in that: The first part of the arc surface of the two blades forms an inlet cavity that communicates with the inlet.
5. A channel impeller for a channel sewage pump according to claim 3 or 4, characterized in that: The first part of the arc surface includes a first arc surface, a second arc surface, and a third arc surface that are continuously connected, and the radius of the first arc surface is smaller than the radii of the first arc surface and the third arc surface.
6. A channel impeller for a channel sewage pump according to claim 3, characterized in that: The second part of the arc surface includes a fourth arc surface and a fifth arc surface that are continuously connected.
7. A channel impeller for a channel sewage pump according to claim 1, characterized in that: The impeller rear cover plate has a boss with a shaft hole at its center, and the thickness of the boss decreases uniformly from the center to the edge.
8. A channel impeller for a channel sewage pump according to claim 1, characterized in that: The impeller front cover plate of the impeller is fitted with the volute casing with a clearance, and an inclined surface is machined at the junction of the outer wall surface of the liquid inlet and the impeller front cover plate, and a gap is formed between the inclined surface and the volute casing.