Axial flow type submersible pump resistant to erosion and long in service life

Abstract

The utility model relates to the field of submersible pumps, and discloses an erosion-resistant long-service-life axial flow type submersible pump. According to the device, a driving shaft is movably arranged in the main body shell, one end of the driving shaft is connected with an impeller, the other end of the impeller is fixedly connected with a threaded column, the surface of the threaded column is in threaded connection with a fastener, a connecting plate is welded to the surface of the fastener, the other end of the connecting plate is connected with an outer ring, and a movable rod is movably arranged on the surface of the connecting plate; a crushing structure is arranged at the front end of the impeller, so that aquatic plants mistakenly entering water can be crushed, and the situation that the operation of the equipment is affected by winding of the aquatic plants can be effectively prevented; a threaded column at the front end of the impeller, an outer ring and a connecting plate can be driven to rotate, a movable rod and a blade are movably arranged on the surface of the connecting plate, and the structure can rotate when equipment rotates and water flows in, so that the effects of crushing aquatic plants and the like are achieved.

Description

Technical Field

[0001] This application belongs to the technical field of submersible pumps, and specifically relates to an erosion-resistant and long-life axial-flow submersible pump. Background Art

[0002] Submersible pumps are important equipment for pumping water from deep wells. When in use, the entire unit is submerged in water to extract groundwater to the surface. It is used for domestic water, mine rescue, industrial cooling, farmland irrigation, seawater lifting, ship ballasting, and can also be used for fountain landscapes. The impeller pump is a type of submersible pump, which can be further divided into centrifugal pumps, mixed-flow pumps, and axial-flow pumps. Among them, the axial-flow pump is a pump that uses the force generated by the blades of the rotating impeller on the liquid to transport the liquid along the axial direction. There are several types such as vertical, horizontal, inclined, and tubular. At present, the following deficiencies exist when using axial-flow submersible pumps.

[0003] For example, the patent with publication number CN219840801U discloses an axial-flow submersible pump with high erosion and wear resistance and long life, including a main body shell and a water inlet channel fixedly connected to one side of the main body shell. A drive shaft is rotatably connected to the axis of the main body shell and the water inlet channel, and an impeller is fixedly connected to the outer wall of the drive shaft. The impeller is located at the water inlet of the water inlet channel. The main body shell includes a shell connected to the end of the water inlet channel and a connecting cylinder integrally formed on the shell. A water outlet is provided on one side of the shell, and an arc-shaped water guide plate is fixedly connected to the shell inside the water outlet. Wear-resistant protection structures are fixedly connected to both the water outlet and the water inlet. By setting a wear-resistant protection structure on the inner wall of the submersible pump and an arc-shaped guide plate at the water outlet of the submersible pump, the impact effect can be reduced, and the problem of large wear of the current submersible pump and low service life is solved.

[0004] However, in this application, a structure for reducing wear caused by strong flow is set at the water inlet end of the submersible pump placed in water, but no crushing structure is set. If large objects such as waterweeds enter, it will affect the operation of the equipment. Summary of the Utility Model

[0005] The purpose of this application is to provide an erosion-resistant and long-life axial-flow submersible pump to solve the problem of waterweeds entering the equipment as mentioned above.

[0006] The technical solution adopted in this application is as follows: An erosion-resistant and long-life axial-flow submersible pump includes a main body shell. A drive shaft is movably arranged inside the main body shell. One end of the drive shaft is connected to an impeller. The other end of the impeller is fixedly connected to a threaded column. A fastener is threadedly connected to the surface of the threaded column. A connecting plate is welded to the surface of the fastener. The other end of the connecting plate is connected to an outer ring. An activity rod is movably arranged on the surface of the connecting plate. The other end of the activity rod is connected to a blade.

[0007] By adopting the above technical solution, the crushing structure is arranged at the front end of the impeller, which can crush the waterweeds accidentally entering the water, thereby effectively preventing the equipment from being affected by the entanglement of waterweeds and affecting the operation. When the driving device drives the driving shaft and the impeller to rotate, it can drive the threaded column, the outer ring and the connecting plate at the front end of the impeller to rotate. The movable rod and the blade are movably arranged on the surface of the connecting plate. When the equipment rotates and water flows in, this structure can rotate, so as to achieve the effect of crushing waterweeds and the like.

[0008] In a preferred embodiment, a water outlet and a water inlet pipe are arranged at the front end of the main body housing, and a sealing flange is arranged at the connection between the water inlet pipe and the water outlet. A connecting piece is arranged on the surface of the sealing flange.

[0009] By adopting the above technical solution, the water inlet pipe and the water outlet can be hermetically connected through the setting of the sealing flange and the connecting piece, preventing the entry of external water flow or impurities, and at the same time promoting the normal operation of other structures.

[0010] In a preferred embodiment, the other end of the water inlet pipe is connected with a water inlet, and a wear-resistant protection structure is connected to the surface of the water inlet.

[0011] By adopting the above technical solution, setting the wear-resistant protection structure at the front end of the water inlet can reduce the wear caused by the impact of strong water flow on the equipment, thereby improving the service life of the equipment.

[0012] In a preferred embodiment, a positioning piece is arranged at the connection between the wear-resistant protection structure and the water inlet, and the material of the wear-resistant protection structure at this position is a ceramic protection layer. The front end expansion end of the wear-resistant protection structure is provided with a casting connection layer.

[0013] By adopting the above technical solution, the setting of the casting connection layer realizes the fixed installation of the ceramic protection layer on the main body housing and the water inlet channel, and it is not easy to fall off. The casting connection layer is a rubber structure with good pressure relief and protection effect. At the same time, a positioning piece is arranged between the casting connection layer and the corresponding main body housing and water inlet channel to strengthen the fixation between the structures and realize the fixation of the ceramic protection layer and the casting connection layer.

[0014] In a preferred embodiment, a flange plate is fixedly arranged at the top of the water outlet, and an arc-shaped water guide plate is arranged inside the water outlet.

[0015] By adopting the above technical solution, the arc-shaped water guide plate arranged inside the water outlet is convenient for guiding the water flow, and at the same time, the arranged flange plate is convenient for connecting this structure with other equipment or components.

[0016] In a preferred embodiment, a connecting pipe is connected to the rear end of the water outlet of the main body housing, and one end of the driving shaft inside the connecting pipe is connected to a driving connection flange.

[0017] By adopting the above technical solution, the provided driving connection flange facilitates the connection between the driving shaft inside the port and the driving device, and the provided connecting pipe can play a protective role.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the present application are as follows:

[0019] In the present application, by arranging a crushing structure at the front end of the impeller, the waterweeds accidentally entering the water can be crushed, thereby effectively preventing the equipment from being affected by the entanglement of waterweeds and affecting the operation. When the driving device drives the driving shaft and the impeller to rotate, the threaded column, the outer ring and the connecting plate at the front end of the impeller can be driven to rotate, and the movable rod and the blade are movably arranged on the surface of the connecting plate. When the equipment rotates and water flows in, this structure can be rotated, so as to achieve the effect of crushing waterweeds and the like. Brief Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the axial flow submersible pump main body of the present application;

[0021] Figure 2 It is a schematic side view structural diagram of the axial flow submersible pump in the present application;

[0022] Figure 3 It is a schematic internal crushing structure diagram of the axial flow submersible pump in the present application;

[0023] Figure 4 It is a schematic wear-resistant protection structure diagram of the axial flow submersible pump in the present application.

[0024] Markings in the figure: 1, main body housing; 2, driving shaft; 3, water inlet pipe; 4, water inlet; 5, wear-resistant protection structure; 6, driving connection flange; 7, water outlet; 8, impeller; 9, sealing flange; 10, connecting piece; 11, threaded column; 12, fastener; 13, outer ring; 14, connecting plate; 15, movable rod; 16, blade; 17, connecting pipe; 18, flange plate; 19, arc-shaped water guide plate; 20, casting connection layer; 21, ceramic protection layer; 22, positioning piece. Detailed Embodiment

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application in combination with the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts belong to the scope of protection of this application.

[0026] Embodiment:

[0027] Referring to Figures 1-3 , a long-life erosion-resistant axial-flow submersible pump includes a main body housing 1. A drive shaft 2 is movably arranged inside the main body housing 1. One end of the drive shaft 2 is connected to an impeller 8. The other end of the impeller 8 is fixedly connected to a threaded column 11. A fastener 12 is threadedly connected to the surface of the threaded column 11. A connecting plate 14 is welded to the surface of the fastener 12. The other end of the connecting plate 14 is connected to an outer ring 13. And a movable rod 15 is movably arranged on the surface of the connecting plate 14. The other end of the movable rod 15 is connected to a blade 16. By arranging a crushing structure at the front end of the impeller 8, the waterweeds accidentally entering the water can be crushed, thereby effectively preventing the equipment from being affected by the entanglement of waterweeds and affecting the operation. When the driving device drives the drive shaft 2 and the impeller 8 to rotate, the threaded column 11, the outer ring 13, and the connecting plate 14 at the front end of the impeller 8 can be driven to rotate. The movable rod 15 and the blade 16 are movably arranged on the surface of the connecting plate 14. When the equipment rotates and water flows in, this structure can be rotated, so as to achieve the effect of crushing waterweeds and the like.

[0028] Referring to Figures 1-2 , a water outlet 7 and a water inlet pipe 3 are arranged at the front end of the main body housing 1. And a sealing flange 9 is arranged at the connection of the water inlet pipe 3 and the water outlet 7. A connecting piece 10 is arranged on the surface of the sealing flange 9. Through the arrangements of the sealing flange 9 and the connecting piece 10, the water inlet pipe 3 and the water outlet 7 can be hermetically connected, preventing the entry of external water flow or impurities, and at the same time promoting the normal operation of other structures.

[0029] Referring to Figures 1-2 , the other end of the water inlet pipe 3 is connected to a water inlet 4. A wear-resistant protection structure 5 is connected to the surface of the water inlet 4. Arranging the wear-resistant protection structure 5 at the front end of the water inlet 4 can reduce the wear caused by the impact of strong water flow on the equipment, thereby improving the service life of the equipment.

[0030] Referring to Figures 1-4, a positioning member 22 is provided at the connection between the wear-resistant protection structure 5 and the water inlet 4, and the material of the wear-resistant protection structure 5 at this position is the ceramic protection layer 21. The front end expansion end of the wear-resistant protection structure 5 is provided with a casting connection layer 20. The setting of the casting connection layer 20 realizes the fixed installation of the ceramic protection layer 21 on the main body housing and the water inlet passage, and it is not easy to fall off. The casting connection layer 20 is a rubber structure, and has a good pressure relief and protection effect. At the same time, a positioning member 22 is provided between the casting connection layer 20 and the corresponding main body housing and water inlet passage to strengthen the fixation between the structures and realize the fixation of the ceramic protection layer 21 and the casting connection layer 20.

[0031] Refer to Figure 1 , a flange 18 is fixedly provided at the top of the water outlet 7, and an arc-shaped water guide plate 19 is provided inside the water outlet 7. The arc-shaped water guide plate 19 provided inside the water outlet 7 facilitates the guidance of the water flow, and at the same time, the provided flange 18 facilitates the connection of this structure with other devices or components.

[0032] Refer to Figure 1 , a connecting pipe 17 is connected to the rear end of the main body housing 1 at the water outlet 7. One end of the driving shaft 2 inside the connecting pipe 17 is connected with a driving connection flange 6. The provided driving connection flange 6 facilitates the connection between the driving shaft 2 inside this port and the driving device, and the provided connecting pipe 17 can play a protective role.

[0033] The implementation principle of the embodiment of an erosion-resistant and long-life axial-flow submersible pump in this application is as follows:

[0034] When the driving device drives the driving shaft 2 and the impeller 8 to rotate, it can drive the threaded column 11, the outer ring 13 and the connecting plate 14 at the front end of the impeller 8 to rotate. The movable rod 15 and the blade 16 are movably arranged on the surface of the connecting plate 14. When the device rotates and water flows in, this structure can be rotated, so as to achieve the effect of crushing waterweeds, etc.

[0035] The setting of the casting connection layer 20 realizes the fixed installation of the ceramic protection layer 21 on the main body housing and the water inlet passage, and it is not easy to fall off. The casting connection layer 20 is a rubber structure, and has a good pressure relief and protection effect. At the same time, a positioning member 22 is provided between the casting connection layer 20 and the corresponding main body housing and water inlet passage to strengthen the fixation between the structures and realize the fixation of the ceramic protection layer 21 and the casting connection layer 20.

[0036] The above embodiments are only used to illustrate the technical solutions of this application, rather than to limit it; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A corrosion-resistant and long-life axial-flow submersible pump, comprising a main body housing (1), characterized in that: A drive shaft (2) is movably arranged inside the main housing (1), one end of the drive shaft (2) is connected to an impeller (8), the other end of the impeller (8) is fixedly connected to a threaded column (11), the surface of the threaded column (11) is threadedly connected to a fastener (12), a connecting plate (14) is welded to the surface of the fastener (12), the other end of the connecting plate (14) is connected to an outer ring (13), and a movable rod (15) is movably arranged on the surface of the connecting plate (14), and the other end of the movable rod (15) is connected to a blade (16).

2. A corrosion-resistant and long-life axial-flow submersible pump as claimed in claim 1, characterized in that: The front end of the main body shell (1) is provided with a water outlet (7) and a water inlet pipe (3), and a sealing flange (9) is provided at the connection between the water inlet pipe (3) and the water outlet (7), and a connecting piece (10) is provided on the surface of the sealing flange (9).

3. A corrosion-resistant and long-life axial-flow submersible pump as claimed in claim 2, characterized in that: The other end of the water inlet pipe (3) is connected to a water inlet (4), and the surface of the water inlet (4) is connected to a wear-resistant protective structure (5).

4. A corrosion-resistant and long-life axial-flow submersible pump as claimed in claim 3, characterized in that: A positioning piece (22) is provided at the connection between the wear-resistant protective structure (5) and the water inlet (4), and the material of the wear-resistant protective structure (5) at this position is a ceramic protective layer (21), and a cast connection layer (20) is provided at the front expansion end of the wear-resistant protective structure (5).

5. The corrosion-resistant and long-life axial-flow submersible pump according to claim 2, characterized in that: A flange (18) is fixedly arranged at the top end of the water outlet (7), and an arc-shaped water guide plate (19) is arranged inside the water outlet (7).

6. A corrosion-resistant and long-life axial-flow submersible pump as claimed in claim 5, characterized in that: The main body shell (1) is connected to a connecting pipe (17) at the rear end of the water outlet (7), and one end of the driving shaft (2) inside the connecting pipe (17) is connected to a driving connecting flange (6).

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