High speed well pump

Abstract

The application relates to a high-rotating-speed well pump and relates to the technical field of water pumps, comprising an impeller, wherein the impeller comprises a front plate and a back plate, an arc-shaped groove is arranged on the front plate, and the arc-shaped groove is arranged at the outer edge of the front plate. The arc-shaped groove comprises a first arc surface and a second arc surface connected with each other, the first arc surface is connected with the second arc surface, and the included angle between the first arc surface and the second arc surface is greater than 90 degrees. The application has the advantages that the back plate can be reduced in abrasion.

Description

A high-speed well pump Technical Field

[0001] This application relates to the technical field of water pumps, and in particular to a high-speed well pump. Background Technology

[0002] High-speed well pumps are high-end integrated products that combine a high-speed motor, pump, and controller, featuring small size, light weight, and material and energy savings. However, high-speed well pumps suffer from the problem that as the speed increases, the axial force causing the impeller to float upwards increases, leading to wear as the rear plate contacts the guide vanes. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, one of the objectives of this application is to provide a high-speed well pump that has the advantage of reducing back plate wear.

[0004] The above-mentioned objective of this application is achieved through the following technical solution:

[0005] A high-speed well pump includes an impeller, the impeller comprising a front plate and a rear plate, the front plate having an arc-shaped groove formed at the outer edge of the front plate.

[0006] By adopting the above technical solution, the arc-shaped groove on the front plate of the impeller reduces the upward thrust on the front plate during use, thus effectively reducing the impeller's upward movement and reducing the wear on the rear plate of the impeller.

[0007] In a preferred embodiment, the present application may be further configured such that: the arcuate groove includes a first arcuate surface and a second arcuate surface connected to each other, the first arcuate surface and the second arcuate surface being connected, and the included angle between the first arcuate surface and the second arcuate surface being greater than 90 degrees.

[0008] By adopting the above technical solution, the angle between the first arc surface and the second arc surface is greater than 90 degrees during use, which minimizes the impact on the impeller's performance.

[0009] In a preferred embodiment, this application may be further configured such that the length of the first arc surface is greater than the length of the second arc surface.

[0010] By adopting the above technical solution, the impact on the hydraulic performance of the impeller is further reduced.

[0011] In a preferred embodiment, this application may be further configured such that: the arcuate groove further includes a guide arcuate surface, one end of the guide arcuate surface is connected to the first arcuate surface, and the other end is connected to the second arcuate surface, wherein the minimum distance of the guide arcuate surface from the center of the front plate is the minimum distance of the arcuate groove from the center of the front plate.

[0012] By adopting the above technical solution, the first arc surface and the second arc surface are connected by a guide arc surface, and the presence of the guide arc surface can effectively reduce the impact on performance.

[0013] In a preferred embodiment, the present application may be further configured such that the arcuate groove further includes a long arcuate surface and a short arcuate surface, one end of the long arcuate surface is connected to the second arcuate surface and the other end is connected to the outer edge of the front plate, one end of the short arcuate surface is connected to the first arcuate surface and the other end is connected to the outer edge of the front plate.

[0014] By adopting the above technical solution, the presence of long and short arc surfaces further reduces the impact of the arc groove on performance.

[0015] In a preferred embodiment, this application may be further configured such that the ratio of the diameter of the circle containing the long arc surface, the diameter of the circle containing the short arc surface, and the diameter of the circle containing the guide arc surface is 1:1:1.

[0016] By adopting the above technical solution, the impact on performance is further reduced.

[0017] In a preferred embodiment, this application may be further configured to include a rotating shaft and guide vanes, wherein a plurality of the impellers are connected to the rotating shaft, and a thrust plate is provided between adjacent impellers, the thrust plate being located between the rear plate and the guide vanes.

[0018] By adopting the above technical solution, the presence of the thrust plate greatly reduces the probability of contact between the rear plate and the guide vane, which can effectively reduce the wear of the rear plate.

[0019] In a preferred embodiment, this application may further include a cover plate, wherein the outer edge of the cover plate is provided with a boss, there are at least two bosses, and the included angle between adjacent bosses is equal.

[0020] By adopting the above technical solution, since conventional deep wells contain different proportions of fine sand, the fine sand will accumulate between the outer diameter of the impeller and the guide vane and rotate with the impeller. The presence of the boss can reduce the flow speed of the mud and sand, thereby reducing the wear at the bend of the guide vane. Attached Figure Description

[0021] Figure 1 is a cross-sectional view of the present application.

[0022] Figure 2 is a cross-sectional structural diagram of the guide vane, impeller, and cover plate of this application.

[0023] Figure 3 is a schematic diagram of the cover plate structure of this application.

[0024] Figure 4 is a schematic diagram of the front panel structure of this application.

[0025] Figure 5 is a top view of the front panel structure of this application.

[0026] Reference numerals in the attached drawings: 1. Rotating shaft; 2. Guide vane; 3. Cover plate; 31. Boss; 4. Impeller; 5. Rear plate; 6. Front plate; 61. Arc groove; 611. Long arc surface; 612. Second arc surface; 613. Guide arc surface; 614. First arc surface; 615. Short arc surface; 7. Thrust plate. Detailed Implementation

[0027] The present application will be further described in detail below with reference to Figures 1-5.

[0028] This application discloses a high-speed well pump, including a rotating shaft 1, guide vanes 2, an impeller 4, and a cover plate 3. The impeller 4 includes a front plate 6 and a rear plate 5. The impeller 4 is fixedly mounted on the rotating shaft 1 and located within the space formed by the cover plate 3 and the impeller 4. A thrust plate 7 is also fixedly mounted on the rotating shaft 1, located between the rear plate 5 and the guide vane 2. At least two bosses 31 are provided on the outer edge of the cover plate 3. The bosses 31 are located within the cavity formed by the guide vane 2 and the cover plate 3. In this embodiment, there are four bosses 31 evenly distributed on the cover plate 3, and the included angle between adjacent bosses 31 is equal.

[0029] The front panel 6 has multiple arc-shaped grooves 61, which are evenly distributed along the outer edge of the front panel 6. In this embodiment, there are six arc-shaped grooves 61, and the included angle between adjacent arc-shaped grooves 61 is equal. Each arc-shaped groove 61 includes a long arc surface 611, a second arc surface 612, a guide arc surface 613, a first arc surface 614, and a short arc surface 615. One end of the long arc surface 611 is connected to the outer edge of the front panel 6, and the other end is connected to the second arc surface 612. The guide arc surface 613 is located between the first arc surface 614 and the second arc surface 612, with one end connected to the first arc surface 614 and the other end connected to the second arc surface 612. The other end of the first arc surface 614 is connected to the short arc surface 615, and the other end of the short arc surface 615 is connected to the outer edge of the front panel 6. The included angle between the first arc surface 614 and the second arc surface 612 is greater than 90 degrees, and the length of the first arc surface 614 is greater than the length of the second arc surface 612.

[0030] The circle containing the long arc surface 611 is inscribed within the circle containing the outer edge of the front plate 6 and the circle containing the second arc surface 612. The circle containing the guide arc surface 613 is circumscribed within the circles containing the first arc surface 614 and the second arc surface 612. The circle containing the short arc surface 615 is inscribed within the circles containing the outer edge of the front plate 6 and the first arc surface 614. The centers of the circles containing the long arc surface 611, the second arc surface 612, the first arc surface 614, and the short arc surface 615 are all located within the circle containing the outer edge of the front plate 6. The center of the circle containing the guide arc surface 613 is located both inside and outside the circle containing the outer edge of the front plate 6. The minimum distance from the guide arc surface to the center of the front plate 6 is the minimum distance from the arc groove 61 to the center of the front plate 6. The ratio of the diameters of the circles containing the long arc surface 611, the short arc surface 615, and the guide arc surface is 1:1:1. The ratio of the radius of the circle containing the first arc surface 614 to the radius of the circle containing the second arc surface 612 is in the range of 3.6-3.7.

[0031] The implementation principle of this embodiment is as follows: During use, due to the presence of the arc groove 61, the upward thrust on the front plate 6 can be effectively reduced. At the same time, the presence of the thrust plate can also effectively reduce the wear between the rear plate 5 and the guide vane 2. The presence of the boss 31 can also reduce the flow velocity of mud and sand, thereby reducing the wear at the bend of the guide vane 2, and thus extending the service life of the high-speed well pump.

[0032] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-speed well pump, characterized in that: The device includes an impeller (4), which comprises a front plate (6) and a rear plate (5). The front plate (6) has an arc-shaped groove (61) located at the outer edge of the front plate (6). The arc-shaped groove (61) comprises a first arc surface (614) and a second arc surface (612) connected to each other. The angle between the first arc surface (614) and the second arc surface (612) is greater than 90 degrees. The length of the first arc surface (614) is greater than the length of the second arc surface (612). The arc-shaped groove (61) also includes a guide arc surface (613). One end of the guide arc surface (613) is connected to the first arc surface (614), and the other end is connected to the second arc surface (612). The minimum distance between the guide arc surface (613) and the center of the front plate (6) is the minimum distance between the arc groove (61) and the center of the front plate (6). The guide arc surface (613) also includes a rotating shaft (1) and a guide vane (2). Several impellers (4) are connected to the rotating shaft (1). A thrust plate (7) is provided between adjacent impellers (4). The thrust plate (7) is located between the rear plate (5) and the guide vane (2). The guide arc surface (613) also includes a cover plate (3). A boss (31) is provided on the outer edge of the cover plate (3). There are at least two bosses (31), and the included angle between adjacent bosses (31) is equal.

2. A high-speed well pump according to claim 1, characterized in that: The arc groove (61) further includes a long arc surface (611) and a short arc surface (615). One end of the long arc surface (611) is connected to the second arc surface (612), and the other end is connected to the outer edge of the front plate (6). One end of the short arc surface (615) is connected to the first arc surface (614), and the other end is connected to the outer edge of the front plate (6).

3. A high-speed well pump according to claim 2, characterized in that: The ratio of the diameter of the circle containing the long arc surface (611), the diameter of the circle containing the short arc surface (615), and the diameter of the circle containing the guide arc surface (613) is 1:1:1.

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