Efficient impeller structure for water supply and drainage pump

Abstract

The utility model discloses an efficient impeller structure for a water supply and drainage pump and belongs to the technical field of impellers. Comprising a first-stage impeller and a second-stage impeller, the first-stage impeller and the second-stage impeller are assembled and connected in a spliced mode, the first-stage impeller comprises a first main shaft, the first main shaft is fixedly sleeved with a front protection plate and a rear protection plate, and the front protection plate and the rear protection plate are fixedly provided with a plurality of large blades and a plurality of small blades along the circumference; the first-stage impeller comprises a first main shaft, the second-stage impeller comprises a second main shaft, the first-stage impeller and the second-stage impeller are assembled and connected to form a double-stage impeller structure, lift can be improved, flow can be increased, noise treatment can be reduced, disassembly and decomposition are facilitated for maintenance work, large blades and small blades in the first-stage impeller are alternately arranged, the large blades are used for bearing larger pressure, and the large blades and the small blades are arranged alternately. The scanning area is increased, the energy conversion rate is improved, the small blades can improve the blocking problem of the large blades, the operation stability is improved, and therefore the drainage power of the water pump is obviously improved.

Description

Technical Field

[0001] This application relates to the field of impeller technology, and more specifically, to a high-efficiency impeller structure for water supply and drainage pumps. Background Art

[0002] Municipal water supply and drainage includes drainage pipes and water supply and drainage pump equipment. The impeller inside a typical water supply and drainage pump is a single-stage impeller. Since a single-stage impeller only has one impeller, its diameter is small and the pressure it can withstand is limited, which cannot support long-distance, high-pressure water supply and drainage. Therefore, multi-stage or double-stage impeller structures have emerged. By increasing the head, the impeller's load-bearing capacity can be improved, achieving a high-efficiency impeller structure and enabling long-distance, high-pressure water supply and drainage. However, double-stage impellers have a complex structure, making disassembly and maintenance difficult. Furthermore, when a double-stage impeller is running, in order to increase the load-bearing capacity, the bent blades need to be enlarged, and the scanning area is increased to increase the load-bearing capacity. However, the water flow stays on the blades for too long, which can easily lead to water flow blockage and jamming. In view of this, we propose a high-efficiency impeller structure for water supply and drainage pumps. Utility Model Content

[0003] 1. Technical problems to be solved

[0004] The purpose of this application is to provide a high-efficiency impeller structure for drainage pumps, solving the technical problems mentioned in the background art. This impeller structure is a bipolar impeller structure assembled and connected from a primary impeller and a secondary impeller. It can improve the head, increase the flow rate, and reduce noise. It is also easy to disassemble and maintain. In addition, the large and small blades in the primary impeller are alternately arranged. The large blades can withstand greater pressure and improve the energy conversion rate by increasing the scanning area, while the small blades can improve the blockage problem of the large blades and improve the operational stability, thereby significantly improving the drainage power of the water pump.

[0005] 2. Technical Solution

[0006] This application provides a high-efficiency impeller structure for water supply and drainage pumps, comprising: a primary impeller and a secondary impeller, wherein the primary impeller and the secondary impeller are spliced ​​and assembled; the primary impeller includes a first main shaft, to which a front guard plate and a rear guard plate are fixedly sleeved; the front guard plate and the rear guard plate are fixedly provided with multiple large blades and multiple small blades along their circumference; the secondary impeller includes a second main shaft, which is inserted and fitted with the first main shaft; the second main shaft is fixedly provided with multiple secondary blades along its circumference; the secondary blades are collectively fixedly connected to an outer cover, which is inserted and fitted with the front guard plate; a retaining ring is fixedly provided on the inner wall of the outer cover, and multiple screws are threadedly fixed between the retaining ring and the front guard plate.

[0007] By adopting the above technical solution, the impeller structure is composed of a first-stage impeller and a second-stage impeller assembled and connected to form a bipolar impeller structure, which can improve the head, increase the flow rate, and reduce noise. Among them, multiple large blades and multiple small blades are arranged between the front and rear guard plates in the first-stage impeller. By using the curved arrangement of the large and small blades, the large blades increase the scanning area and improve the energy conversion rate, thereby bearing greater pressure. The addition of small blades can improve the clogging problem and improve the operational stability, thus significantly improving the drainage power of the water pump. Moreover, the assembly and connection of the first-stage and second-stage impellers can be easily disassembled for maintenance.

[0008] Optionally, both the primary and secondary impellers are made of high-hardness heat-treated aerospace aluminum.

[0009] By adopting the above technical solution, the first-stage impeller and the second-stage impeller are made of high-hardness heat-treated aerospace aluminum material and are processed with high precision using a five-axis machining center, resulting in a smooth and clean surface and improved operational balance.

[0010] Optionally, the front guard plate has an annular slot and multiple fan-shaped slots, and the outer cover is inserted into the annular slot at one end near the front guard plate.

[0011] By adopting the above technical solution, the outer cover is inserted into the annular slot opened on the front guard plate, so that the first-stage impeller and the second-stage impeller can be inserted and connected.

[0012] Optionally, the retaining ring is provided with a plurality of screw holes evenly distributed around its circumference, the front guard plate is provided with a plurality of through holes evenly distributed around its circumference, and the screw is movably inserted into the through holes and threaded into the screw holes.

[0013] By adopting the above technical solution, after the first-stage impeller and the second-stage impeller are connected by plug-in fitting, they are fixed by multiple screws, so that the first-stage impeller and the second-stage impeller can be easily disassembled and processed, which is convenient for maintenance.

[0014] Optionally, the large and small blades are alternately arranged and evenly distributed along the circumference of the first main axis.

[0015] By adopting the above technical solution, large and small blades are alternately set. The large blades increase the scanning area and improve the energy conversion rate, thereby withstanding greater pressure. The addition of small blades can improve the clogging problem and improve the operational stability, thereby significantly improving the drainage power of the water pump.

[0016] 3. Beneficial effects

[0017] One or more technical solutions provided in this application have at least the following technical effects or advantages: The impeller structure is assembled and connected from a first-stage impeller and a second-stage impeller to form a bipolar impeller structure, which can improve the head, increase the flow rate and reduce noise. It is also easy to disassemble and maintain. Furthermore, the large and small blades in the first-stage impeller are alternately arranged. The large blades bear greater pressure and improve the energy conversion rate by increasing the scanning area, while the small blades can improve the blockage problem of the large blades and improve the operational stability, thereby significantly improving the drainage power of the water pump. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a high-efficiency impeller structure for a water supply and drainage pump disclosed in a preferred embodiment of this application.

[0019] Figure 2 This is an exploded structural diagram of the first-stage and second-stage impellers of a high-efficiency impeller structure for a water supply and drainage pump disclosed in a preferred embodiment of this application.

[0020] Figure 3 This is a schematic diagram of the internal structure of a secondary impeller for a high-efficiency impeller structure for a water supply and drainage pump, as disclosed in a preferred embodiment of this application.

[0021] The following are the labels in the diagram: 1. First-stage impeller; 11. First main shaft; 12. Front guard plate; 121. Annular slot; 122. Sector groove; 123. Perforation; 13. Rear guard plate; 14. Large blade; 15. Small blade; 16. Screw; 2. Second-stage impeller; 21. Second main shaft; 22. Second-stage blade; 23. Outer cover; 24. Retaining ring; 241. Screw hole. DETAILED DESCRIPTION

[0022] The present application will be further described in detail below with reference to the accompanying drawings.

[0023] Reference Figures 1 to 3This application provides a high-efficiency impeller structure for a water supply and drainage pump, comprising: a primary impeller 1 and a secondary impeller 2, which are spliced ​​and assembled together. The primary impeller 1 includes a first main shaft 11, with a front guard plate 12 and a rear guard plate 13 fixedly sleeved on the first main shaft 11. The front guard plate 12 and the rear guard plate 13 are provided with multiple large blades 14 and multiple small blades 15 fixedly along their circumference. The secondary impeller 2 includes a second main shaft 21, which is inserted and connected to the first main shaft 11. The second main shaft 21 is provided with multiple secondary blades 22 fixedly along its circumference. The secondary blades 22 are collectively fixedly connected to an outer cover 23, which is inserted and connected to the front guard plate 12. A retaining ring 24 is fixedly provided on the inner wall of the outer cover 23. Multiple screws 16 are threadedly fixed between the retaining ring 24 and the front guard plate 12. The impeller structure consists of a first-stage impeller 1 and a second-stage impeller 2 assembled and connected to form a bipolar impeller structure, which can improve the head, increase the flow rate, and reduce noise. In the first-stage impeller 1, multiple large blades 14 and multiple small blades 15 are arranged between the front guard plate 12 and the rear guard plate 13. The large blades 14 and small blades 15 are curved. The large blades 14 increase the scanning area and improve the energy conversion rate, thereby bearing greater pressure. The addition of small blades 15 can improve the blockage problem and improve the operational stability, thereby significantly improving the drainage power of the water pump. The assembly and connection of the first-stage impeller 1 and the second-stage impeller 2 can be easily disassembled for maintenance.

[0024] Reference Figure 1 and Figure 2 Both the first-stage impeller 1 and the second-stage impeller 2 are made of high-hardness heat-treated aviation aluminum. They are processed with high precision using a five-axis machining center, resulting in a smooth and clean surface that improves operational balance.

[0025] Reference Figure 2 and Figure 3 The front guard plate 12 has an annular slot 121 and multiple fan-shaped slots 122. The outer cover 23 is inserted into the annular slot 121 near one end of the front guard plate 12, so that the first-stage impeller 1 and the second-stage impeller 2 can be connected by insertion.

[0026] Reference Figure 2 and Figure 3 The retaining ring 24 has multiple screw holes 241 evenly distributed around its circumference, and the front guard plate 12 has multiple through holes 123 evenly distributed around its circumference. The screw rod 16 is movably inserted into the through hole 123 and threaded into the screw hole 241. After the first-stage impeller 1 and the second-stage impeller 2 are connected by insertion, they are fixed by multiple screw rods 16, so that the first-stage impeller 1 and the second-stage impeller 2 can be easily disassembled and processed for maintenance.

[0027] Reference Figure 2 and Figure 3 Large blades 14 and small blades 15 are alternately arranged and evenly distributed along the circumference of the first main axis 11. The large blades 14 and small blades 15 are alternately arranged. The large blades 14 increase the scanning area and improve the energy conversion rate, thereby bearing greater pressure. The addition of small blades 15 can improve the blockage problem and improve the operational stability, thereby significantly improving the drainage power of the water pump.

[0028] Working principle: This impeller structure consists of a first-stage impeller 1 and a second-stage impeller 2 assembled together to form a bipolar impeller structure, which can improve head, increase flow rate and reduce noise. In the first-stage impeller 1, multiple large blades 14 and multiple small blades 15 are arranged between the front guard plate 12 and the rear guard plate 13. The large blades 14 and small blades 15 are curved. The large blades 14 increase the scanning area and improve the energy conversion rate, thereby withstanding greater pressure. The addition of small blades 15 can improve the blockage problem and improve the operational stability, thus significantly improving the drainage power of the water pump. Furthermore, the assembly and connection of the first-stage impeller 1 and the second-stage impeller 2 can be easily disassembled for maintenance.

Claims

1. A high-efficiency impeller structure for water supply and drainage pumps, characterized in that: It includes: a primary impeller (1) and a secondary impeller (2), wherein the primary impeller (1) and the secondary impeller (2) are spliced ​​and assembled. The primary impeller (1) includes a first main shaft (11), and the first main shaft (11) is fixedly sleeved with a front guard plate (12) and a rear guard plate (13). The front guard plate (12) and the rear guard plate (13) are fixedly provided with multiple large blades (14) and multiple small blades (15) along the circumference. The secondary impeller (2) includes a second main shaft ( 21) The second spindle (21) is plugged into and connected to the first spindle (11). The second spindle (21) is fixedly provided with multiple secondary blades (22) along the circumference. The secondary blades (22) are fixedly connected to an outer cover (23). The outer cover (23) is plugged into and connected to the front guard plate (12). The inner wall of the outer cover (23) is fixedly provided with a retaining ring (24). The retaining ring (24) and the front guard plate (12) are threadedly fixed with multiple screws (16).

2. The high-efficiency impeller structure for water supply and drainage pumps according to claim 1, characterized in that: Both the primary impeller (1) and the secondary impeller (2) are made of high-hardness heat-treated aerospace aluminum.

3. The high-efficiency impeller structure for water supply and drainage pumps according to claim 2, characterized in that: The front guard plate (12) is provided with an annular slot (121) and a plurality of fan-shaped slots (122), and the outer cover (23) is inserted into the annular slot (121) at one end near the front guard plate (12).

4. The high-efficiency impeller structure for water supply and drainage pumps according to claim 1, characterized in that: The retaining ring (24) has a plurality of screw holes (241) evenly distributed around its circumference, and the front guard plate (12) has a plurality of through holes (123) evenly distributed around its circumference. The screw (16) is movably inserted into the through hole (123) and threaded into the screw hole (241).

5. The high-efficiency impeller structure for water supply and drainage pumps according to claim 1, characterized in that: The large blades (14) and small blades (15) are alternately arranged and evenly distributed along the circumference of the first main axis (11).

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