Impeller structure for centrifugal pump

Abstract

The utility model belongs to the technical field of centrifugal pumps, and particularly relates to an impeller structure for a centrifugal pump, which comprises an impeller body, a hub, an upper water absorption component and a lower water absorption component. The upper water absorption assembly comprises an upper blade, an upper water absorption opening and an upper spoiler. The lower water absorption assembly comprises a lower blade, a lower water absorption opening and a lower spoiler. According to the impeller structure for the centrifugal pump, a two-way water suction structure of the upper water suction assembly and the lower water suction assembly is adopted, fluid can enter from the two sides of the impeller at the same time, and the flow and lift of the centrifugal pump are improved; the two-way water absorption structure can balance stress on the two sides of the impeller, vibration and noise are reduced, and the working stability of the centrifugal pump is improved; spoilers are respectively arranged in the upper water suction port and the lower water suction port, so that the flowing state of fluid can be changed, generation of vortexes is reduced, energy loss is reduced, and the suction efficiency of the fluid is improved; and particularly, when fluid containing impurities or particles is conveyed, the spoiler can also play a certain role in guiding flow, so that the risk of blockage is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of centrifugal pump technology, and in particular relates to an impeller structure for a centrifugal pump. Background Technology

[0002] Centrifugal pumps, as a common fluid transport device, are widely used in various fields such as industry, agriculture, and construction. The impeller is the core component of a centrifugal pump, and its performance directly affects key indicators such as the pump's efficiency, head, and cavitation resistance.

[0003] Traditional centrifugal pump impellers typically employ a single-suction design, meaning they have only one suction port and one set of blades. This design allows fluid to enter from only one side of the impeller, resulting in uneven force distribution on both sides, which can easily lead to vibration and noise. It also limits the flow rate and head of the centrifugal pump. Furthermore, when pumping fluids containing impurities or particles, single-suction impellers are prone to clogging, affecting the normal operation of the centrifugal pump. Utility Model Content

[0004] The purpose of this invention is to provide an impeller structure for centrifugal pumps, aiming to solve the technical problems in the prior art where uneven force on both sides of the impeller easily generates vibration and noise, while also limiting the flow rate and head of the centrifugal pump and affecting its normal operation.

[0005] To achieve the above objectives, the centrifugal pump impeller structure provided in this utility model embodiment includes an impeller body, a hub, an upper suction assembly, and a lower suction assembly. The hub is connected to the impeller body, and both the upper and lower suction assemblies are connected to the impeller body. The upper suction assembly is disposed on one side of the lower suction assembly.

[0006] The upper water intake assembly includes upper blades, an upper water intake port, and an upper baffle plate. The upper blades are connected to the impeller body and the hub, respectively. The upper water intake port is located on the side of the impeller body, and the upper baffle plate is located inside the upper water intake port and connected to the impeller body.

[0007] The lower suction assembly includes a lower blade, a lower suction port, and a lower baffle. The lower blade is connected to the impeller body and the hub, respectively. The lower suction port is located on the side of the impeller body, and the lower baffle is located inside the lower suction port and connected to the impeller body.

[0008] As an optional solution of this utility model, the wheel hub is provided with a positioning groove.

[0009] As an optional solution of this utility model, the upper blades are provided in multiple ways and are evenly fixedly connected to the impeller body and the hub, and the multiple upper blades are evenly arranged in a ring on the impeller body.

[0010] As an optional solution of this utility model, the upper suction port is provided in multiple ways and is evenly arranged in a ring on the impeller body.

[0011] As an optional solution of this utility model, multiple upper baffles are provided, and the number is the same as the number of upper water inlets, with one upper baffle provided in each upper water inlet.

[0012] As an optional solution of this utility model, multiple lower blades are provided and are uniformly fixedly connected to the impeller body and the hub, and the multiple lower blades are uniformly arranged in a ring on the impeller body.

[0013] As an optional solution of this utility model, the lower suction port is provided in multiple ways and is evenly arranged in a ring on the impeller body.

[0014] As an optional solution of this utility model, multiple lower baffles are provided, and the number is the same as the number of lower water inlets, with one lower baffle provided in each lower water inlet.

[0015] The centrifugal pump impeller structure provided in this embodiment of the present invention has at least one of the following technical effects:

[0016] The centrifugal pump impeller structure provided in this application adopts a bidirectional suction structure with an upper suction assembly and a lower suction assembly, allowing fluid to enter from both sides of the impeller simultaneously, thereby increasing the flow rate and head of the centrifugal pump. The bidirectional suction structure also balances the forces on both sides of the impeller, reducing vibration and noise, and improving the working stability of the centrifugal pump. Turbulent vanes are installed in the upper and lower suction ports respectively, which can change the flow state of the fluid, reduce the generation of eddies, reduce energy loss, and improve the suction efficiency of the fluid. Especially when conveying fluids containing impurities or particles, the turbulent vanes can also play a certain guiding role, reducing the accumulation of impurities at the suction port and reducing the risk of blockage. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A perspective view of the impeller structure for a centrifugal pump provided in an embodiment of this utility model.

[0019] Figure 2 A perspective view of the impeller structure for a centrifugal pump provided in an embodiment of this utility model.

[0020] Figure 3 A side view of the impeller structure for a centrifugal pump provided in an embodiment of this utility model.

[0021] Figure 4 for Figure 3 Sectional view along the middle AA.

[0022] The following are the labeling elements in the figure:

[0023] 1. Impeller body; 2. Hub; 3. Upper suction assembly; 4. Lower suction assembly;

[0024] 21. Positioning groove;

[0025] 31. Upper blades; 32. Upper suction inlet; 33. Upper baffle;

[0026] 41. Lower blades; 42. Lower suction port; 43. Lower baffle. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.

[0028] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0031] In one embodiment of this utility model, such as Figures 1-3 As shown, a centrifugal pump impeller structure is provided, including an impeller body 1, a hub 2, an upper suction assembly 3 and a lower suction assembly 4. The hub 2 is connected to the impeller body 1, and both the upper suction assembly 3 and the lower suction assembly 4 are connected to the impeller body 1. The upper suction assembly 3 is located on one side of the lower suction assembly 4.

[0032] The upper suction assembly 3 includes upper blades 31, an upper suction port 32, and an upper baffle 33. The upper blades 31 are fixedly connected to the impeller body 1 and the hub 2, respectively. The upper suction port 32 is located on the side of the impeller body 1, and the upper baffle 33 is located inside the upper suction port 32 and is fixedly connected to the impeller body 1.

[0033] The lower suction assembly 4 includes a lower blade 41, a lower suction port 42, and a lower baffle 43. The lower blade 41 is fixedly connected to the impeller body 1 and the hub 2, respectively. The lower suction port 42 is located on the side of the impeller body 1, and the lower baffle 43 is located inside the lower suction port 42 and is fixedly connected to the impeller body 1.

[0034] The centrifugal pump impeller structure provided in this application adopts a bidirectional suction structure with an upper suction assembly 3 and a lower suction assembly 4, which allows fluid to enter from both sides of the impeller simultaneously, improving the flow rate and head of the centrifugal pump. The bidirectional suction structure can also balance the forces on both sides of the impeller, reduce vibration and noise, and improve the working stability of the centrifugal pump. Turbulent vanes are respectively set in the upper and lower suction ports 42, which can change the flow state of the fluid, reduce the generation of eddies, reduce energy loss, and improve the suction efficiency of the fluid. Especially when conveying fluids containing impurities or particles, the turbulent vanes can also play a certain guiding role, reducing the accumulation of impurities at the suction port and reducing the risk of blockage.

[0035] In another embodiment of this utility model, the hub 2 is provided with a positioning groove 21. This groove is used for precise positioning and connection with the pump shaft, ensuring the coaxiality of the impeller and the pump shaft, and improving the stability of the impeller rotation.

[0036] In another embodiment of this invention, multiple upper blades 31 are provided and uniformly fixedly connected to the impeller body 1 and the hub 2. The multiple upper blades 31 are uniformly arranged in a ring on the impeller body 1. This structural design allows the fluid to enter the impeller interior evenly under the action of the upper blades 31, improving the fluid intake efficiency and the working stability of the impeller.

[0037] In another embodiment of this utility model, multiple upper suction ports 32 are provided and are evenly arranged in a ring on the impeller body 1. The arrangement of multiple upper suction ports 32 increases the passage for fluid to enter the impeller and improves the flow rate of the centrifugal pump.

[0038] In another embodiment of this utility model, multiple upper baffles 33 are provided, and the number is the same as that of upper suction ports 32, with one upper baffle 33 disposed in each upper suction port 32. The function of the upper baffles 33 is to change the flow state of the fluid in the suction port, reduce the generation of eddies, and improve the fluid suction efficiency.

[0039] In another embodiment of this utility model, multiple lower blades 41 are provided and are uniformly fixedly connected to the impeller body 1 and the hub 2. The multiple lower blades 41 are uniformly arranged in a ring on the impeller body 1. The structure and layout of the lower blades 41 are similar to those of the upper blades 31, so that the fluid can also enter the impeller interior uniformly under the action of the lower suction assembly 4.

[0040] In another embodiment of this utility model, multiple lower suction ports 42 are provided and are evenly arranged in a ring on the impeller body 1. The arrangement of multiple lower suction ports 42 also increases the passage for fluid to enter the impeller, further improving the flow rate of the centrifugal pump.

[0041] In another embodiment of this utility model, multiple lower baffles 43 are provided, and the number is the same as that of lower suction ports 42, with one lower baffle 43 disposed in each lower suction port 42. The function of the lower baffles 43 is the same as that of the upper baffles 33, which is to improve the flow state of the fluid in the suction port.

[0042] The centrifugal pump impeller structure provided in this application adopts a bidirectional suction structure with an upper suction assembly 3 and a lower suction assembly 4, which allows fluid to enter from both sides of the impeller simultaneously, improving the flow rate and head of the centrifugal pump. The bidirectional suction structure can also balance the forces on both sides of the impeller, reduce vibration and noise, and improve the working stability of the centrifugal pump. Turbulent vanes are respectively set in the upper and lower suction ports 42, which can change the flow state of the fluid, reduce the generation of eddies, reduce energy loss, and improve the suction efficiency of the fluid. Especially when conveying fluids containing impurities or particles, the turbulent vanes can also play a certain guiding role, reducing the accumulation of impurities at the suction port and reducing the risk of blockage.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An impeller structure for a centrifugal pump, characterized in that, It includes an impeller body, a hub, an upper water suction assembly, and a lower water suction assembly. The hub is connected to the impeller body, and both the upper and lower water suction assemblies are connected to the impeller body. The upper water suction assembly is disposed on one side of the lower water suction assembly. The upper water intake assembly includes upper blades, an upper water intake port, and an upper baffle plate. The upper blades are connected to the impeller body and the hub, respectively. The upper water intake port is located on the side of the impeller body, and the upper baffle plate is located inside the upper water intake port and connected to the impeller body. The lower suction assembly includes a lower blade, a lower suction port, and a lower baffle. The lower blade is connected to the impeller body and the hub, respectively. The lower suction port is located on the side of the impeller body, and the lower baffle is located inside the lower suction port and connected to the impeller body.

2. The impeller structure for a centrifugal pump according to claim 1, characterized in that, The wheel hub is provided with a positioning groove.

3. The impeller structure for a centrifugal pump according to claim 1, characterized in that, The upper blades are provided in multiples and are evenly fixedly connected to the impeller body and the hub. The multiple upper blades are evenly arranged in a ring on the impeller body.

4. The impeller structure for a centrifugal pump according to claim 1, characterized in that, The upper suction port is provided in multiple ways and is evenly arranged in a ring on the impeller body.

5. The impeller structure for a centrifugal pump according to claim 4, characterized in that, The upper baffle is provided in multiple quantities, and the number is the same as the number of upper water inlets. One upper baffle is provided in each upper water inlet.

6. The impeller structure for a centrifugal pump according to claim 1, characterized in that, The lower blades are provided in multiples and are evenly fixedly connected to the impeller body and the hub. The multiple lower blades are evenly arranged in a ring on the impeller body.

7. The impeller structure for a centrifugal pump according to claim 1, characterized in that, The lower suction port is provided in multiple ways and is evenly arranged in a ring on the impeller body.

8. The impeller structure for a centrifugal pump according to claim 1, characterized in that, The lower baffle is provided in multiple quantities, and the number is the same as the number of lower suction ports. One lower baffle is provided in each lower suction port.

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