Vertical double-impeller long shaft pump

Abstract

The utility model relates to the technical field of long shaft pumps, and discloses a vertical double-impeller long shaft pump which comprises a driving assembly, a water outlet elbow, a guide vane body and a water suction port, the guide vane body is fixed between the bottom end of the water outlet elbow and the upper end of the water suction port, and the water outlet elbow comprises a connecting outer pipe, a water outlet pipeline and a sealing installation base. The connecting outer pipe and the water outlet pipeline are integrally formed, the water outlet pipeline is bent, the water outlet end of the water outlet pipeline is kept perpendicular to the connecting outer pipe, and the sealing installation base is integrally formed and vertically arranged on the bent portion of the water outlet pipeline so that the sealing installation base can be located in the center of the connecting outer pipe. The motor is vertically fixed to the top end of the connecting outer pipe, a rotating part of the motor is connected with the upper end of a motor shaft through a sealing connecting piece, and two impellers are fixed to the lower portion of the motor shaft at intervals. The drainage efficiency of the long shaft pump can be improved, and the long shaft pump is simple in overall structure and convenient to install and fix.

Description

Technical Field

[0001] The utility model relates to the technical field of long - shaft pumps, in particular to a vertical double - impeller long - shaft pump. Background Technique

[0002] The vertical long - shaft pump belongs to a type of centrifugal pump and is widely used in fields such as farmland irrigation, urban water supply, sewage treatment, and industrial cooling. Most of the existing vertical long - shaft pumps are single - impeller, and their drainage efficiency is limited to a certain extent. In addition, they mostly require additional support and fixing devices, making installation and fixing inconvenient.

[0003] There are already some vertical long - shaft pumps in the prior art. For example, the application number is CN202122966748.5, and the name is a stable vertical long - shaft pump. It drives the screw rod to rotate through the first gear and the transmission shaft to drive the up - and - down movement of the long - shaft pump assembly, which can achieve the effect of being liftable and improve its stability. Another example is the application number CN202011323500.0, and the name is a power - sealed vertical long - shaft pump. It installs a cooling component to cool the stuffing box to achieve better power - sealing performance, reduce the working pressure of the sealing ring, and increase the service life of the sealing ring, but it mainly focuses on the sealing performance of the long - shaft pump. Content of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a vertical double - impeller long - shaft pump, which can improve the drainage efficiency of the long - shaft pump, and its overall structure is simple, facilitating installation and fixing.

[0005] The utility model is realized by adopting the following technical scheme: A vertical double - impeller long - shaft pump includes a driving component, a water outlet elbow, a guide vane body, and a water suction port. The guide vane body is fixed between the bottom end of the water outlet elbow and the upper end of the water suction port. The water outlet elbow includes a connecting outer pipe, a water outlet pipe, and a sealing mounting seat. The connecting outer pipe and the water outlet pipe are integrally formed. The water outlet pipe is bent, and the water outlet end of the water outlet pipe is perpendicular to the connecting outer pipe. The sealing mounting seat is integrally formed and vertically arranged at the bending part of the water outlet pipe, so that the sealing mounting seat is located in the center of the connecting outer pipe. The driving component includes a motor, a motor shaft, a sealing connecting piece, and an impeller. The motor is vertically fixed at the top end of the connecting outer pipe. The rotating part of the motor is connected to the upper end of the motor shaft through the sealing connecting piece. The sealing connecting piece is located in the center of the sealing mounting seat. Two impellers are fixedly arranged at intervals on the lower part of the motor shaft.

[0006] Further, the guide vane body includes a guide vane cylinder shell, guide vanes, and a rotating shaft base. A plurality of guide vanes are uniformly fixed on the inner side of the lower part of the guide vane cylinder shell. The rotating shaft base is fixed in the center of the plurality of guide vanes. The lower end of the motor shaft is rotatably installed in the center of the rotating shaft base.

[0007] Further, an upper mounting plate is fixed to the top end of the connecting outer pipe. A motor flange is fixed to the bottom end of the motor. The motor flange is fixed to the center of the upper end of the upper mounting plate by bolts. The two ends of the upper mounting plate extend to the left and right sides, and mounting holes are provided on the upper mounting plate.

[0008] Further, a water outlet flange is fixed to the water outlet end of the water outlet pipe.

[0009] Further, a lower mounting plate is fixed to the bottom end of the water outlet pipe. The two ends of the lower mounting plate extend to the left and right sides, and a plurality of rib plates are welded at intervals between the upper end of the lower mounting plate and the outer side of the water outlet pipe.

[0010] Further, a guide head is installed at the bottom end of the motor shaft.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. For the vertical double-impeller long-shaft pump of the present utility model, its overall structure is simple. By arranging the double impellers side by side, the drainage efficiency can be improved.

[0013] 2. For the vertical double-impeller long-shaft pump of the present utility model, through the arrangement of two layers of mounting plates, namely the upper mounting plate and the lower mounting plate, the long-shaft pump can be installed and fixed according to the water depth of the on-site environment, better realizing drainage and being convenient for installation and fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the front view of the present utility model;

[0015] Figure 2 is the three-dimensional structure schematic diagram of the present utility model;

[0016] Figure 3 is the sectional view of the present utility model;

[0017] Figure 4 is the structure schematic diagram of the water outlet elbow in the present utility model;

[0018] Figure 5 is the structure schematic diagram of the guide vane body in the present utility model;

[0019] Figure 6 is the structure schematic diagram of the water suction port in the present utility model.

[0020] In the figure: driving component - 1; water outlet elbow - 2; guide vane body - 3; water suction port - 4; guide head - 5; motor - 11; motor flange - 12; motor shaft - 13; sealing connector - 14; impeller - 15; connecting outer pipe - 21; upper mounting plate - 22; water outlet pipe - 23; water outlet flange - 231; lower mounting plate - 24; sealing mounting seat - 25; rib plate - 26; guide vane cylinder shell - 31; guide vane - 32; rotating shaft base - 33. Detailed implementation mode

[0021] The following uses specific specific examples to illustrate the implementation mode of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific implementation modes. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0022] The purpose of the present utility model is to provide a vertical double - impeller long - shaft pump for the defects of the prior art.

[0023] Embodiment 1

[0024] This embodiment provides a vertical double - impeller long - shaft pump. Refer to Figures 1-6As shown in the figure, it includes a drive assembly 1, a water outlet elbow 2, a guide vane body 3, and a water suction port 4. The guide vane body 3 is fixed between the bottom end of the water outlet elbow 2 and the upper end of the water suction port 4. The water suction port 4 is trumpet-shaped, with a larger diameter at the bottom end and a smaller diameter at the upper end. The water outlet elbow 2 includes a connecting outer pipe 21, a water outlet pipe 23, and a sealing mounting seat 25. The connecting outer pipe 21 and the water outlet pipe 23 are integrally formed. The water outlet pipe 23 is bent, and the water outlet end of the water outlet pipe 23 is perpendicular to the connecting outer pipe 21. A water outlet flange 231 is fixed at the water outlet end of the water outlet pipe 23 for connecting the water outlet pipe 23 to an external pipe. The sealing mounting seat 25 is integrally formed and vertically arranged at the bent portion of the water outlet pipe 23, so that the sealing mounting seat 25 is located in the center of the connecting outer pipe 21. The drive assembly 1 includes a motor 11, a motor shaft 13, a sealing connector 14, and an impeller 15. The motor 11 is vertically fixed at the top end of the connecting outer pipe 21. Specifically, an upper mounting plate 22 is fixed at the top end of the connecting outer pipe 21. A motor flange 12 is fixed at the bottom end of the motor 11. The motor flange 12 is fixed to the center of the upper end of the upper mounting plate 22 by bolts. The two ends of the upper mounting plate 22 extend to the left and right sides. Mounting holes are provided on the upper mounting plate 22 for supporting and fixing the vertical double-impeller long-shaft pump. The rotating part of the motor 11 is connected to the upper end of the motor shaft 13 through the sealing connector 14. The sealing connector 14 is located in the center of the sealing mounting seat 25. Two impellers 15 are fixedly spaced at the lower part of the motor shaft 13. They are arranged side by side through the double impellers, which can improve the drainage efficiency of the long-shaft pump. A guide head 5 is installed at the bottom end of the motor shaft 13 for water flow guidance.

[0025] Refer to Figure 5 As shown in the figure, the guide vane body 3 includes a guide vane cylinder shell 31, guide vanes 32, and a rotating shaft base 33. A number of guide vanes 32 are uniformly fixed inside the lower part of the guide vane cylinder shell 31. The rotating shaft base 33 is fixed in the center of the number of guide vanes 32. The lower end of the motor shaft 13 is rotatably installed in the center of the rotating shaft base 33.

[0026] Refer to Figure 4 As shown in the figure, a lower mounting plate 24 is fixed at the bottom end of the water outlet pipe 23. The two ends of the lower mounting plate 24 extend to the left and right sides for supporting and fixing the vertical double-impeller long-shaft pump. A number of rib plates 26 are welded at intervals between the upper end of the lower mounting plate 24 and the outer side of the water outlet pipe 23 to improve the connection strength between the water outlet pipe 23 and the lower mounting plate 24.

[0027] A vertical double - impeller long - shaft pump, when it works: The motor 11 drives the motor shaft 13 to rotate at a high speed. By using the rapid rotation of the impeller 15 to do work, the impeller blades are subjected to the action of centrifugal force, forming a low - pressure area inside to suck in the liquid. With the double - impellers arranged side by side, it can improve the drainage efficiency. Through the arrangement of the upper mounting plate 22 and the lower mounting plate 24, which are two - layer mounting plates, the long - shaft pump can be installed and fixed according to the water depth of the on - site environment, preventing the suction port 4 from being blocked, and better realizing drainage. Its overall structure is simple, facilitating installation and fixation.

[0028] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This way of narration in the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vertical double - impeller long - shaft pump, comprising a drive assembly (1), a guide vane body (3) and a suction port (4), wherein the guide vane body (3) is fixed between the bottom end of the outlet elbow (2) and the upper end of the suction port (4), and is characterized in that: It further includes a water outlet elbow pipe (2), and the water outlet elbow pipe (2) includes a connecting outer pipe (21), a water outlet pipe (23) and a sealing mounting seat (25). The connecting outer pipe (21) and the water outlet pipe (23) are integrally formed. The water outlet pipe (23) is bent, and the water outlet end of the water outlet pipe (23) is perpendicular to the connecting outer pipe (21). The sealing mounting seat (25) is integrally formed and vertically arranged at the bent part of the water outlet pipe (23), so that the sealing mounting seat (25) is located in the center of the connecting outer pipe (21). The driving assembly (1) includes a motor (11), a motor shaft (13), a sealing connecting piece (14) and an impeller (15). The motor (11) is vertically fixed at the top end of the connecting outer pipe (21). The rotating part of the motor (11) is connected to the upper end of the motor shaft (13) through the sealing connecting piece (14). The sealing connecting piece (14) is located in the center of the sealing mounting seat (25). Two impellers (15) are fixedly arranged at intervals on the lower part of the motor shaft (13).

2. The vertical double - impeller long - shaft pump according to claim 1, wherein: The guide vane body (3) includes a guide vane cylinder shell (31), guide vanes (32) and a rotating shaft base (33). A number of guide vanes (32) are uniformly fixed on the inner side of the lower part of the guide vane cylinder shell (31). The rotating shaft base (33) is fixed in the center of the number of guide vanes (32). The lower end of the motor shaft (13) is rotatably installed in the center of the rotating shaft base (33).

3. The vertical double-impeller long-shaft pump according to claim 1 or 2, characterized in that: An upper mounting plate (22) is fixed at the top end of the connecting outer pipe (21). A motor flange (12) is fixed at the bottom end of the motor (11). The motor flange (12) is fixed at the center of the upper end of the upper mounting plate (22) through bolts. The two ends of the upper mounting plate (22) extend to the left and right sides, and mounting holes are provided on the upper mounting plate (22).

4. The vertical double - impeller long - shaft pump according to claim 1 or 2, characterized in that: A water outlet flange (231) is fixed at the water outlet end of the water outlet pipe (23).

5. The vertical double-impeller long-shaft pump according to claim 1 or 2, characterized in that: A lower mounting plate (24) is fixed at the bottom end of the water outlet pipe (23). The two ends of the lower mounting plate (24) extend to the left and right sides. A number of rib plates (26) are welded at intervals between the upper end of the lower mounting plate (24) and the outer side of the water outlet pipe (23).

6. The vertical double - impeller long - shaft pump according to claim 1, wherein: A guide head (5) is installed at the bottom end of the motor shaft (13).

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