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CN-224228952-U - High-efficiency energy-saving circulating water pump

CN224228952UCN 224228952 UCN224228952 UCN 224228952UCN-224228952-U

Abstract

The utility model belongs to the field of water pumps, and particularly relates to a high-efficiency energy-saving circulating water pump which comprises a pump body, an impeller and a wheel shaft, wherein a pump cavity is arranged in the pump body in a hollow mode, a water inlet communicated with the pump cavity is formed in one end of the pump body, a shaft hole for sealing and rotating the pump cavity is formed in the other end of the pump body, a water outlet communicated with an annular side wall is formed in the pump body, the diameter of a circular end wall I is smaller than that of a circular end wall II, the diameter of the annular side wall from one side of the circular end wall I to one side of the circular end wall II is gradually increased, the impeller comprises a wheel body fixedly connected with the wheel shaft and a plurality of blades arranged on the outer side of the wheel body in an annular array, and the diameter of the end part of the wheel body and the outer walls of the blades is gradually increased from one side of the circular end wall I to one side of the circular end wall II. The centrifugal circulating water pump provided by the utility model can output higher flow or lift under the same input power by improving the structures of the pump cavity and the impeller, thereby realizing high efficiency and energy conservation.

Inventors

  • Xiong Yexin

Assignees

  • 湖南长一泵业有限公司

Dates

Publication Date
20260512
Application Date
20250630

Claims (10)

  1. 1. The efficient energy-saving circulating water pump is characterized by comprising a pump body (1), an impeller (2) and a wheel shaft (3); A pump cavity (11) is arranged in the pump body (1) in a hollow mode, a water inlet (12) communicated with the pump cavity (11) is formed in one end of the pump body (1), and a shaft hole (13) used for sealing and rotating the connecting wheel shaft (3) is formed in the other end of the pump body (1); The pump cavity (11) comprises a circular end wall I (111) communicated with one side of the water inlet (12), a circular end wall II (112) communicated with one side of the shaft hole (13), and an annular side wall (113) connected with the circular end wall I (111) and the circular end wall II (112), and a water outlet (14) communicated with the annular side wall (113) is arranged on the pump body (1); The diameter of the circular end wall I (111) is smaller than that of the circular end wall II (112), and the diameter of the annular side wall (113) from one side of the circular end wall I (111) to one side of the circular end wall II (112) is gradually increased; The impeller (2) is arranged in the pump cavity (11), the impeller (2) comprises a wheel body (21) fixedly connected with the wheel shaft (3) and a plurality of blades (22) arranged on the outer side of the wheel body (21) in an annular array, the end part of the wheel body (21) and the outer walls of the plurality of blades (22) form a circle, and the diameter of the circle from one side of the circular end wall I (111) to one side of the circular end wall II (112) is gradually increased.
  2. 2. The high efficiency and energy saving circulating water pump as claimed in claim 1, wherein the size of the circle formed by the end of the wheel body (21) and the outer walls of the plurality of blades (22) is scaled in equal proportion to the size of the middle end of the annular side wall (113).
  3. 3. The efficient and energy-saving circulating water pump as claimed in claim 1, wherein the annular side wall (113) comprises a circular side wall (1132) and a water outlet section (1133) of the water inlet section (1131) and the water outlet section (1133) which are sequentially arranged along one side of the circular end wall I (111) to one side of the circular end wall II (112); the water inlet section (1131) is connected with the inner diameter of the circular ring side wall (1132), and the water outlet section (1133) is connected with the outer diameter of the circular ring side wall (1132); the water outlet (14) is arranged on the water outlet section (1133).
  4. 4. A high efficiency energy saving circulating water pump as claimed in claim 3, characterized in that the end of the wheel body (21) is provided with a circular boss (211) towards the water inlet section (1131); The end of the circular boss (211) is positioned in the water outlet section (1133).
  5. 5. A high efficiency energy saving circulating water pump as claimed in claim 3 wherein the junction of the circular side wall (1132) of the water inlet section (1131) and the water outlet section (1133) is in circular arc transition.
  6. 6. A high efficiency energy saving circulating water pump as claimed in any one of claims 1-5, characterized in that a plurality of blades (22) are provided with a cavity (221) on the side close to the circular end wall II (112); the end part of the wheel body (21) is provided with a reinforcing rib (23) for connecting the blade root positions of two adjacent blades (22), and the reinforcing rib (23) divides the concave cavity (221) into a plurality of parts.
  7. 7. The high efficiency, energy efficient circulating water pump of claim 6 wherein the plurality of vanes (22) are parallel to the circular end wall II (112) on a side thereof adjacent the circular end wall II (112); One end of the plurality of reinforcing ribs (23) protrudes toward the circular end wall II (112).
  8. 8. A high efficiency energy saving circulating water pump as claimed in any one of claims 1-5, characterized in that the side wall of the pump chamber (11) and the bottom wall of the side of the pump chamber (11) provided with the shaft hole (13) are in circular arc transition.
  9. 9. A high efficiency energy saving circulating water pump as claimed in any one of claims 1-5, characterized in that the pump body (1) comprises a housing (15) and an end cap (16) which are connected and fastened to each other; The inside of the shell (15) is hollow, one end of the shell is open, the end cover (16) is connected with the open side of the shell (15) and seals the opening, and the end cover (16) and the hollow are enclosed to form a pump cavity (11); The shaft hole (13) is arranged on the end cover (16).
  10. 10. A high efficiency energy saving circulating water pump as claimed in claim 9, characterized in that the connection side of the end cap (16) and the housing (15) is provided with a sealing ring (17).

Description

High-efficiency energy-saving circulating water pump Technical Field The utility model belongs to the field of water pumps, and particularly relates to a high-efficiency energy-saving circulating water pump. Background Currently, in the field of water pump energy conservation, the main technical path is focused on improving the efficiency of the drive system and improving the hydraulic design. The former generally adopts variable frequency speed regulation technique, matches actual load demand through adjusting motor rotational speed, avoids the energy waste that the valve throttle caused. The latter focuses on optimizing key hydraulic components, such as applying a high-efficiency impeller model which is more in line with the fluid dynamics principle, improving parameters such as blade profile, outlet angle and the like, carrying out careful hydraulic design on a pump shell to reduce internal flow loss, adopting means such as precision casting to ensure the surface smoothness of a runner and reduce friction loss. These techniques play an important role in improving the overall operating energy efficiency of the water pump. However, the prior art still has significant energy saving drawbacks at the structural design level, particularly in the critical areas where the pump chamber is mated with the impeller. Conventional centrifugal pumps typically employ a pump chamber of equal diameter or simple cone shape with a (rake/heel) vane impeller or cone impeller having a large wrap angle. The design is easy to generate sudden expansion of the flow passage section when water enters the volute diffusion section after flowing out of the impeller, and causes severe flow velocity change and pressure pulsation, thereby causing obvious vortex flow, flow separation and impact energy loss. Disclosure of utility model The utility model aims to solve the technical problem of providing a circulating water pump which realizes high efficiency and energy conservation after improving the structures of a pump cavity and an impeller. The utility model provides a high-efficiency energy-saving circulating water pump, which comprises a pump body, an impeller and a wheel shaft; The pump body is internally provided with a pump cavity in a hollow way, one end of the pump body is provided with a water inlet communicated with the pump cavity, and the other end of the pump body is provided with a shaft hole for sealing and rotating a connecting wheel shaft; The pump cavity comprises a circular end wall I communicated with one side of the water inlet, a circular end wall II communicated with one side of the shaft hole, and an annular side wall connecting the circular end wall I and the circular end wall II, and a water outlet communicated with the annular side wall is arranged on the pump body; The diameter of the circular end wall I is smaller than that of the circular end wall II, and the diameter of the annular side wall from one side of the circular end wall I to one side of the circular end wall II gradually becomes larger; the impeller is arranged in the pump cavity, the impeller comprises a wheel body fixedly connected with the wheel shaft and a plurality of blades which are arranged on the outer side of the wheel body in an annular array, and the diameter of a circle formed by the end part of the wheel body and the outer walls of the plurality of blades gradually increases from one side of the circular end wall I to one side of the circular end wall II. Further, the size of the circle formed by the wheel body end and the plurality of blade outer walls is scaled equally to the size of the intermediate end of the annular side wall. Further, the annular side wall comprises a water inlet section annular side wall and a water outlet section which are sequentially arranged along one side of the circular end wall I to one side of the circular end wall II; The water inlet section is connected with the inner diameter of the side wall of the circular ring, and the water outlet section is connected with the outer diameter of the side wall of the circular ring; The water outlet is arranged on the water outlet section. Further, a round boss is arranged at the end part of the wheel body towards the water inlet section; the end of the round boss is positioned in the water outlet section. Further, the joint of the circular side wall of the water inlet section and the water outlet section is in arc transition. Further, a concave cavity is formed in one side, close to the circular end wall II, of the plurality of blades; the wheel body end is provided with the strengthening rib of connecting two adjacent blade root positions, and the strengthening rib is cut apart the cavity into a plurality of portions. Further, the side of the plurality of blades close to the circular end wall II is parallel to the circular end wall II; one end of each reinforcing rib protrudes towards one side of the circular end wall II. Further, the side wall of the pump cavity