Deep-well pump water conservancy structure with rotary spiral guide vane structure

Abstract

The utility model discloses a deep-well pump water conservancy structure with a rotary spiral guide vane structure. The deep-well pump water conservancy structure comprises a shell, a front flange, a rear flange, a rotating shaft and a plurality of impeller sets. Impellers in the impeller group are assembled on the rotating shaft and can rotate along with the rotating shaft; the front flange and the rear flange are respectively in threaded connection with the front end and the rear end of the shell; the device further comprises a rotary guide vane structure, a front bearing and a rear bearing. The rotating guide vane structure is locked at the front end of the rotating shaft, an inner ring of the front bearing is fixed to the rotating guide vane structure in an interference mode, and an outer ring of the front bearing is fixed to a bearing chamber of the front flange in an interference mode; an inner ring of the rear bearing is locked at the rear end of the rotating shaft, and an outer ring of the rear bearing is fixed to a bearing chamber of the rear flange in an interference mode. The guide vane structure at the front end of the rotating shaft in the water conservancy structure of the deep-well pump is arranged to be the rotary guide vane structure, and compared with an existing fixed structure, kinetic energy loss of fluid can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of deep well pumps, in particular to a deep well pump hydraulic structure with a rotary spiral guide vane structure. Background Art

[0002] A deep well pump is a pump that is immersed in a groundwater well to pump and transport water. It is widely used in fields such as farmland irrigation and drainage, industrial and mining enterprises, urban water supply and drainage, and sewage treatment. The deep well pump drives the impeller in the impeller group to rotate through the rotating shaft to increase the pressure of the fluid. The water flows through the impeller group at the front and then flows out through the guide vane structure. In existing deep well pumps, the front end of the rotating shaft is a bearing mechanism, and the guide vane structure is a fixed non-rotating structure. When the fluid passes through the bearing mechanism and the fixed guide vane structure, it will lose some kinetic energy. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a deep well pump hydraulic structure with a rotary spiral guide vane structure.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A deep well pump hydraulic structure with a rotating spiral guide vane structure comprises a housing, a front flange, a rear flange, a rotating shaft and a plurality of impeller groups; the impellers in the impeller groups are mounted on the rotating shaft and can rotate with the rotating shaft; the front flange and the rear flange are respectively threadedly connected to the front end and the rear end of the housing; it also comprises a rotating guide vane structure, a front bearing and a rear bearing; the rotating guide vane structure is locked to the front end of the rotating shaft, the inner ring of the front bearing is interference fixed to the rotating guide vane structure, and the outer ring of the front bearing is interference fixed to the bearing chamber of the front flange; the inner ring of the rear bearing is locked to the rear end of the rotating shaft, and the outer ring of the rear bearing is interference fixed to the bearing chamber of the rear flange.

[0006] Furthermore, a sealing ring is provided between the front bearing and the water outlet of the frontmost impeller assembly, and the sealing ring is sleeved on the outside of the rotating guide vane structure.

[0007] Furthermore, a plurality of spiral blades are circumferentially arranged inside the rotating guide vane structure.

[0008] Furthermore, the spiral angle of the spiral blade is 20°-60°.

[0009] The beneficial effect of the utility model is that the utility model sets the guide vane structure at the front end of the rotating shaft in the deep well pump hydraulic structure as a rotating guide vane structure, which can avoid the kinetic energy loss of the fluid compared with the existing fixed structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is an overall schematic diagram of the deep well pump hydraulic structure in the embodiment of the utility model;

[0011] Figure 2 It is an overall schematic diagram of the rotating guide vane structure in the embodiment of the utility model;

[0012] Figure 3 It is a top cross-sectional view of the rotating guide vane structure in an embodiment of the present utility model. DETAILED DESCRIPTION

[0013] The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that this embodiment is based on the technical solution and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to this embodiment.

[0014] This embodiment provides a deep well pump hydraulic structure with a rotating spiral guide vane structure, such as Figure 1 As shown, it includes a housing 11, a front flange 1, a rear flange 12, a rotating shaft 9, a rotating guide vane structure 10 and a plurality of impeller groups; the impeller 5 in the impeller group is assembled on the rotating shaft 9 and can rotate with the rotating shaft 9;

[0015] The front flange 1 and the rear flange 12 are respectively threadedly connected to the front and rear ends of the housing 11, serving as supporting components of the entire device;

[0016] The rotating guide vane structure 10 is locked to the front end of the rotating shaft 9 by the front screw 7 and the front pressure cover 8, the inner ring of the front bearing 2 is fixed to the rotating guide vane structure 10 by interference fit, and the outer ring of the front bearing 2 is fixed to the bearing chamber of the front flange 1 by interference fit; the inner ring of the rear bearing 13 is locked to the rear end of the rotating shaft 9 by the rear pressure cover 15 and the rear screw 16, and the outer ring of the rear bearing 13 is fixed to the bearing chamber of the rear flange 12 by interference fit. In this way, the rotating shaft 9 and the rotating guide vane structure 10 can rotate under the support of the front bearing 2 and the rear bearing 13. The output shaft of a power mechanism such as an electric motor or a hydraulic motor can be connected to the front end of the rotating guide vane structure 10 or the rear end of the rotating shaft 9, and the rotating power is transmitted through the front end of the rotating guide vane structure 10 or the rear end of the rotating shaft 9.

[0017] It should be noted that the impeller assembly is usually composed of a fixed guide vane 4, an impeller 5, and an impeller housing 6. The impeller 5 is assembled on a rotating shaft 9 and disposed in the impeller housing 6. The fixed impeller 4 is disposed on the outlet side of the impeller 5 and is fixed to the impeller housing 6. The impeller can rotate around the impeller center and, under the action of centrifugal force, send the fluid into the fixed guide vane and flow out from the upper end of the fixed guide vane to the next flow channel. The impeller assembly can be one or more groups (such as Figure 1There are 8 impeller groups in the embodiment. When there are multiple impeller groups, the impeller shell of the front impeller group and the fixed impeller of the rear impeller group are assembled and fixed to each other between adjacent impeller groups. The impeller shell of the rearmost impeller group is screwed and locked with the shell 11 through the rear flange 12, and the fixed guide vane of the frontmost impeller group is fixed with the lower end flange of the front flange 1. In this way, the fixed guide vanes and impeller shells of all impeller groups can be fixed, and only the middle impeller 5 can rotate with the rotating shaft 9.

[0018] In this embodiment, a sealing ring 3 is provided between the front bearing 2 and the water outlet of the frontmost impeller assembly, and the sealing ring 3 is sleeved on the outside of the rotating guide vane structure 10. The sealing ring 3 can prevent impurities in the fluid from entering the front bearing 2.

[0019] In this embodiment, if Figure 2-3 As shown, a plurality of spiral blades 101 are circumferentially arranged inside the rotating guide vane structure 10, which forms a booster structure. After the fluid enters the rotating guide vane structure, it is synchronously transported upward in a spiral manner. The spiral blades compress the fluid, increase the output pressure of the fluid, and avoid the kinetic energy loss of the fluid.

[0020] Furthermore, in this embodiment, the spiral angle of the spiral blade 101 is 20°-60°. The smaller the spiral angle, the greater the thrust, but the speed will decrease, and 20°-60° is a better choice.

[0021] For those skilled in the art, various corresponding changes and modifications can be made according to the above technical solutions and concepts, and all of these changes and modifications should be included in the protection scope of the claims of the utility model.

Claims

1. A deep well pump hydraulic structure with a rotary spiral guide vane structure, comprising a housing (11), a front flange (1), a rear flange (12), a rotating shaft (9) and a plurality of impeller groups; the impeller (5) in the impeller group is mounted on the rotating shaft (9) and can rotate with the rotating shaft (9); the front flange (1) and the rear flange (12) are respectively threadedly connected to the front end and the rear end of the housing (11); characterized in that: The invention also comprises a rotating guide vane structure (10), a front bearing (2) and a rear bearing (13); the rotating guide vane structure (10) is locked to the front end of the rotating shaft (9); the inner ring of the front bearing (2) is fixed to the rotating guide vane structure (10) by interference fit; the outer ring of the front bearing (2) is fixed to the bearing chamber of the front flange (1) by interference fit; the inner ring of the rear bearing (13) is locked to the rear end of the rotating shaft (9); the outer ring of the rear bearing (13) is fixed to the bearing chamber of the rear flange (12) by interference fit.

2. The deep well pump hydraulic structure according to claim 1, characterized in that: A sealing ring (3) is provided between the front bearing (2) and the water outlet of the impeller assembly at the front end, and the sealing ring (3) is sleeved on the outside of the rotating guide vane structure (10).

3. The deep well pump hydraulic structure according to claim 1, characterized in that: A plurality of spiral blades (101) are arranged circumferentially inside the rotating guide vane structure (10).

4. The deep well pump hydraulic structure according to claim 3 is characterized in that: The spiral angle of the spiral blade (101) is 20°-60°.

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