Axial flow electric pump

Abstract

The utility model provides an axial flow electric pump, and belongs to the technical field of electric pumps. The impeller solves the problems that in the prior art, an impeller is low in efficiency and insufficient in structural strength. The water pump comprises a motor shell, a pump shell, a water suction chamber, a pump shaft, a guide vane body and an impeller body, the pump shell is fixedly connected with the water suction chamber, the upper end of the guide vane body is fixedly connected with the lower end of the motor shell, the pump shaft sequentially penetrates through the motor shell, the pump shell, the guide vane body and the impeller body, a plurality of upper vanes are formed outside the guide vane body, and the impeller body is fixedly connected with the end of the pump shaft. A plurality of curved blades are formed on the outer surface of the impeller body, an outer wheel body and an inner wheel body are formed in the impeller body, a gap is formed between the outer wheel body and the inner wheel body, a plurality of reinforcing columns are fixed between the outer wheel body and the inner wheel body, a through hole is formed in the lower end of the inner wheel body, the water suction chamber is of a frustum structure, and a flange connecting structure is formed at the upper end of the water suction chamber. A diversion curved surface is formed in the water absorption chamber, and a plurality of strip-shaped runner holes are formed in the lower end of the water absorption chamber. The flow guide pipe has the advantages of being good in flow guide effect, high in water flow conveying efficiency and high in structural strength.

Description

Technical Field

[0001] This utility model belongs to the field of electric pump technology and relates to an axial flow electric pump. Background Technology

[0002] An axial flow electric pump is a type of hydraulic machinery that integrates an electric motor with an axial flow pump, driving water to flow axially through the rotation of an impeller.

[0003] Chinese patent publication number CN217632948U discloses a self-cooling submersible axial flow electric pump, including a pump body. A waterproof shell is fixedly installed on the top of the pump body. A motor is fixedly installed inside the waterproof shell. An output shaft is fixedly installed on the output end of the motor. The output shaft passes through the top wall of the pump body and is located inside the pump body. A connecting block is fixedly installed on the bottom of the output shaft. Multiple vortex blades are fixedly installed on the arc-shaped side wall of the connecting block. Multiple water inlets are evenly distributed below the arc-shaped side wall of the pump body. A drain pipe is fixedly installed on the arc-shaped side wall of the pump body. A transmission groove is opened above the arc-shaped side wall of the pump body. Two drive rods are symmetrically fixedly installed on the output shaft corresponding to the position of the transmission groove. A transmission magnetic block is fixedly installed inside the transmission groove and at the ends of the two drive rods that are far apart. A stirring rod is fixedly installed on the outer wall of the transmission magnetic block located inside the transmission groove.

[0004] The patent provides a self-cooled submersible axial flow electric pump in which air is guided only by a vortex vane installed at the bottom of the output shaft. The vortex vane has a rectangular shape, resulting in low air guiding efficiency, and the vortex vane of this structure is easily damaged. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the prior art by providing an axial flow electric pump.

[0006] The objective of this utility model can be achieved through the following technical solution: An axial flow electric pump includes a motor housing, a pump housing, a suction chamber, a pump shaft, a guide vane body, and an impeller body. The pump housing and the suction chamber are connected and fixed. The upper end of the guide vane body is fixedly connected to the lower end of the motor housing. The pump shaft passes through the motor housing, pump housing, guide vane body, and impeller body in sequence. Several upper blades are formed on the outside of the guide vane body. The impeller body is fixedly connected to the end of the pump shaft. Several curved blades are formed on the outer surface of the impeller body. An outer impeller body and an inner impeller body are formed in the impeller body. A gap is formed between the outer impeller body and the inner impeller body, and several reinforcing columns are fixed between the outer impeller body and the inner impeller body. A through hole is opened at the lower end of the inner impeller body. The suction chamber has a truncated cone structure, and a flange connection structure is formed at the upper end of the suction chamber. A flow guiding surface is formed inside the suction chamber. Several strip-shaped flow channel holes are opened at the lower end of the suction chamber.

[0007] In the aforementioned axial flow electric pump, a keyway is provided inside the inner wheel body, a shaft key is provided at the end of the pump shaft, the shaft key is connected to the keyway, and the pump shaft passes through a through hole.

[0008] In the aforementioned axial flow electric pump, the pump casing is funnel-shaped and a flow channel is formed inside the pump casing. The guide vane is installed inside the pump casing, and a gap is left between the upper blade and the inner wall of the pump casing.

[0009] In the aforementioned axial flow electric pump, the pump casing is connected to the inside of the suction chamber.

[0010] Compared with the prior art, the axial flow electric pump provided by this utility model has the following beneficial effects: 1. The impeller body adopts a combination structure of outer impeller body, inner impeller body and reinforcing column, which can effectively disperse stress, enhance the overall rigidity of the impeller, reduce the risk of deformation and damage under high-speed rotation and water flow impact, and improve operational stability and service life; 2. The conical structure of the suction chamber, the guide curved surface and the strip flow channel hole design, as well as the guide flow channel inside the pump casing, can guide the water flow smoothly, reduce water flow resistance and energy loss, and improve water delivery efficiency; 3. The upper blades can gradually adjust the rotating water flow discharged by the impeller to axial flow, reduce the rotational turbulence of the water flow, reduce energy loss, and improve the overall hydraulic efficiency of the electric pump. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the impeller structure.

[0014] In the diagram: 1. Motor housing; 2. Pump housing; 21. Flow guide channel; 3. Suction chamber; 31. Flange connection structure; 32. Flow guide surface; 33. Strip flow channel hole; 4. Pump shaft; 41. Shaft key; 5. Guide vane body; 51. Upper blade; 6. Impeller body; 61. Curved blade; 62. Outer impeller body; 63. Inner impeller body; 631. Keyway; 64. Clearance; 65. Reinforcing column; 66. Through hole. 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 Figures 1 to 3As shown, this embodiment includes a motor housing 1, a pump housing 2, a suction chamber 3, a pump shaft 4, a guide vane body 5, and an impeller body 6. The upper end of the guide vane body 5 is fixedly connected to the lower end of the motor housing 1. The pump shaft 4 passes through the motor housing 1, pump housing 2, guide vane body 5, and impeller body 6 in sequence. Several upper blades 51 are formed on the outside of the guide vane body 5. The impeller body 6 is fixedly connected to the end of the pump shaft 4. The pump housing 2 is funnel-shaped and a flow channel 21 is formed inside the pump housing 2. The guide vane body 5 is installed inside the pump housing 2. A gap is left between the upper blades 51 and the inner wall of the pump housing 2. The pump housing 2 is connected to the inside of the suction chamber 3.

[0017] like Figure 3 As shown, the impeller body 6 has several curved blades 61 formed on its outer surface. An outer impeller body 62 and an inner impeller body 63 are formed in the impeller body 6. A gap 64 is formed between the outer impeller body 62 and the inner impeller body 63. Several reinforcing columns 65 are fixed between the outer impeller body 62 and the inner impeller body 63 by welding. A through hole 66 is opened at the lower end of the inner impeller body 63. The pump shaft 4 passes through the through hole 66 and is fixedly connected to the impeller body 6 by bolts.

[0018] like Figures 1 to 2 As shown, the suction chamber 3 has a truncated cone structure and the upper end of the suction chamber 3 is formed as a flange connection structure 31. The flange connection structure 31 is fixedly attached to the lower end of the pump casing 2 and fixed by bolts. The interior of the suction chamber 3 is formed as a flow guiding surface 32. Several strip-shaped flow channel holes 33 are evenly opened at the lower end of the suction chamber 3. The strip-shaped flow channel holes 33 penetrate the wall of the suction chamber 3 to form a water inlet, so that the water enters the interior of the suction chamber 3 evenly.

[0019] To elaborate further, such as Figure 2 As shown, the upper blade 51 and the curved blade 61 are set in the same direction. After the curved blade 61 pushes the water flow, the upper blade 51 receives the water flow in the same direction, avoiding the impact and vortex caused by the sudden change in the direction of the water flow, reducing hydraulic loss and making energy transfer more efficient.

[0020] To elaborate further, such as Figures 2 to 3 As shown, a keyway 631 is provided inside the inner wheel body 63, and a shaft key 41 is provided at the end of the pump shaft 4, which is connected to the keyway 631.

[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 uses a variety of 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. An axial flow electric pump, comprising a motor housing (1), a pump housing (2), a suction chamber (3), a pump shaft (4), a guide vane body (5), and an impeller body (6), characterized in that: The pump casing (2) and the suction chamber (3) are connected and fixed. The upper end of the guide vane (5) is fixedly connected to the lower end of the motor casing (1). The pump shaft (4) passes through the motor casing (1), pump casing (2), guide vane (5), and impeller body (6) in sequence. Several upper blades (51) are formed on the outside of the guide vane (5). The impeller body (6) is fixedly connected to the end of the pump shaft (4). Several curved blades (61) are formed on the outer surface of the impeller body (6). An outer impeller body (62) and an outer impeller body (62) are formed in the impeller body (6). The inner wheel body (63) has a gap (64) between the outer wheel body (62) and the inner wheel body (63), and a number of reinforcing columns (65) are fixed between the outer wheel body (62) and the inner wheel body (63). The lower end of the inner wheel body (63) is provided with a through hole (66). The water absorption chamber (3) has a truncated cone structure and a flange connection structure (31) is formed at the upper end of the water absorption chamber (3). A flow guiding surface (32) is formed inside the water absorption chamber (3). A number of strip-shaped flow channel holes (33) are provided at the lower end of the water absorption chamber (3).

2. The axial flow electric pump according to claim 1, characterized in that: The inner wheel body (63) has a keyway (631) inside, and the pump shaft (4) has a key (41) at its end. The key (41) is connected to the keyway (631), and the pump shaft (4) passes through a through hole (66).

3. The axial flow electric pump according to claim 1, characterized in that: The pump casing (2) is funnel-shaped and has a flow channel (21) inside. The guide vane (5) is installed inside the pump casing (2), and there is a gap between the upper blade (51) and the inner wall of the pump casing (2).

4. An axial flow electric pump according to claim 1, characterized in that: The pump casing (2) is connected to the inside of the suction chamber (3).

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