Wide-width pump impeller with special-shaped curved surface runner

Abstract

The utility model relates to the technical field of wide-width pump impellers, and discloses a wide-width pump impeller with a special-shaped curved surface runner, which comprises an impeller body, a guide shell and a pump shaft, the inner side of the guide shell is provided with a guide shell runner, the guide shell runner is internally provided with a flow regulation component, and the impeller body is internally provided with a plurality of variable cross-section runner components; the variable cross-section flow channel assembly comprises a plurality of blades, the multiple blades are fixedly connected into the impeller body, an impeller flow channel is formed between the multiple blades and the impeller body, and the inlet end of the impeller flow channel is an expanded channel. According to the utility model, through the special-shaped curved surface formed by the smooth grooves and the convex ribs on the surface of the impeller, the conversion between kinetic energy and pressure energy can be efficiently completed under different displacements. According to the fluid conveying principle, the inlet end of the impeller passage is designed to be an expanded passage, so that fluid can enter the impeller passage more smoothly.

Description

Technical Field

[0001] This utility model relates to the field of wide-width pump impeller technology, and in particular to a wide-width pump impeller with an irregular curved flow channel. Background Technology

[0002] A wide-width pump impeller with irregularly shaped curved flow channels is a type of impeller structure that employs specially shaped curved flow channels and has a relatively large impeller width. The flow channels of this type of impeller are no longer traditional simple straight lines or regular curves, but are designed into various irregular curved surfaces based on fluid mechanics principles and specific engineering application requirements.

[0003] Currently, the flow channels of commonly used wide-width pump impellers are usually straight blade flow channels. Under low speed and low flow conditions, straight blade flow channels can allow the fluid to pass through the impeller more smoothly, and the flow state is relatively stable, which can ensure the normal operation of the pump and meet some simple working conditions with low requirements for flow and pressure.

[0004] Although straight-blade impellers allow for smoother flow through the impeller under low-speed and low-flow conditions, fluid entry and exit from the blades are prone to impact and separation. Furthermore, the straight blades experience significant resistance when propelling the medium, leading to increased energy loss and even blockage within the flow channel. For media containing solid particles, straight-blade impellers are susceptible to erosion and wear, particularly at the blade inlet and outlet, resulting in reduced pump performance and lifespan. Therefore, a wide-width pump impeller with an irregularly shaped curved flow channel is proposed to address these issues. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a wide-range pump impeller with an irregular curved flow channel, which aims to improve the problem that the existing technology cannot effectively adapt to different flow rates and prevent the medium from clogging in the flow channel.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A wide-width pump impeller with irregular curved flow channels includes an impeller body, a guide shell, and a pump shaft, characterized in that: a guide shell flow channel is provided on the inner side of the guide shell, a flow regulating component is provided inside the guide shell flow channel, and multiple variable cross-section flow channel components are provided inside the impeller body;

[0008] The variable cross-section flow channel assembly includes multiple blades, all of which are fixedly connected inside the impeller body. An impeller flow channel is formed between the multiple blades and the impeller body. The inlet end of the impeller flow channel is an expanding channel, the middle section of the impeller flow channel is a smooth channel, and the outlet section of the impeller flow channel is a contracting channel. Multiple ribs are provided on one side surface of each of the multiple blades, and smooth grooves are provided in the grooves between the multiple ribs.

[0009] As a further description of the above technical solution:

[0010] The flow regulation includes a limiting block, which is disposed inside the guide shell flow channel. A limiting groove is formed on the inner side of the bottom of the limiting block. A ring is provided at the end of the impeller body. The impeller body is slidably connected to the side of the pump shaft. The ring is slidably connected inside the limiting groove. A slider is fixedly connected to the inner side of the impeller body. A sliding groove is formed on the outer side of the pump shaft. The slider is slidably connected to the inner side of the sliding groove.

[0011] As a further description of the above technical solution:

[0012] The impeller body is provided with a slider at the bottom, and a limiting groove is formed between the slider and the bottom of the impeller body. A ring is provided on the inner side of the end of the guide shell, and the slider is slidably connected to the inner side of the ring. A limiting groove is formed on the inner side of the end of the guide shell, and the limiting groove is connected to the flow channel of the guide shell. The impeller body is slidably connected inside the limiting groove.

[0013] As a further description of the above technical solution:

[0014] A bearing sleeve is fixedly connected to the outside of the pump shaft, and the limiting block is fixedly connected to the outside of the bearing sleeve.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this invention, the irregular curved surface formed by the smooth grooves and ribs on the impeller surface can efficiently complete the conversion of kinetic energy and pressure energy under different displacements. Based on the principle of fluid transport, the inlet end of the impeller flow channel is designed as an enlarged channel, allowing the fluid to enter the impeller flow channel more smoothly; the middle section of the impeller flow channel adopts a smooth channel to ensure stable fluid flow within the channel; the outlet section of the impeller flow channel is a constricted channel, which, according to the principle of fluid mechanics, increases the fluid velocity. The uniform flow field distribution enables the pump to better transport liquids containing impurities such as sand particles, improving the pump's sand-passing capacity.

[0017] 2. In this invention, through the principle of flow regulation, the impeller body can slide along the pump shaft axis, changing the communication area between the impeller flow channel and the guide shell flow channel. This allows the pump to flexibly adjust the flow rate under different operating conditions without replacing the pump or making large-scale adjustments to the entire system, thus meeting various actual production needs and improving the pump's versatility and flexibility of use. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of a wide-width pump impeller with an irregularly shaped curved flow channel proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the guide shell flow channel of a wide-width pump impeller with an irregular curved surface flow channel proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the pump shaft structure of a wide-width pump impeller with an irregular curved flow channel proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the smooth groove structure of a wide-width pump impeller with an irregular curved flow channel proposed in this utility model.

[0022] Legend:

[0023] 1. Impeller body; 2. Blade; 3. Rib; 4. Impeller flow channel; 5. Guide shell; 6. Limiting block; 7. Bearing sleeve; 8. Limiting groove one; 9. Pump shaft; 10. Ring one; 11. Guide shell flow channel; 12. Limiting groove two; 13. Limiting groove three; 14. Ring two; 15. Sliding block; 16. Sliding groove; 17. Smooth groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figure 1 , Figure 3 and Figure 4 An embodiment of this utility model is provided: a wide-width pump impeller with irregular curved surface flow channel, including impeller body 1, guide shell 5 and pump shaft 9. A guide shell flow channel 11 is opened on the inner side of the guide shell 5. A flow regulating component is provided inside the guide shell flow channel 11. Multiple variable cross-section flow channel components are provided inside the impeller body 1.

[0026] The variable cross-section flow channel assembly includes multiple blades 2, all of which are fixedly connected inside the impeller body 1. An impeller flow channel 4 is formed between the multiple blades 2 and the impeller body 1. The inlet end of the impeller flow channel 4 is an expanding channel. When fluid enters the impeller flow channel 4, it first passes through a contracting channel at the inlet end. The expanding channel effectively reduces the flow velocity at the inlet, minimizing impact and turbulence, allowing the fluid to enter the impeller more smoothly and improving the impeller's suction capacity. The middle section of the impeller flow channel 4 is a smooth channel, ensuring stable and smooth fluid flow within the channel, reducing energy loss and pressure fluctuations. The outlet section of the impeller flow channel 4 is a contracting channel, which increases the flow velocity of the fluid as it exits the impeller. According to Bernoulli's principle, this increased velocity converts pressure energy into kinetic energy, thereby increasing the fluid's output pressure and achieving efficient fluid transport. Multiple ribs 3 are provided on one side surface of each of the multiple blades 2, and smooth grooves 17 are provided in the grooves between the ribs 3. Multiple raised ribs 3 and smooth grooves 17 between the raised ribs 3 on one side of the blade 2 form an irregular curved surface. This irregular curved surface can optimize the flow state of the fluid in the impeller channel 4, making the velocity distribution of the flow field more uniform and avoiding abrupt changes in velocity and pressure.

[0027] Reference Figure 1 and Figure 2 The flow regulation includes a limiting block 6, which is located inside the guide shell flow channel 11. A limiting groove 8 is formed on the inner bottom side of the limiting block 6. A ring 14 is provided at the end of the impeller body 1. The impeller body 1 is slidably connected to the side of the pump shaft 9, and the ring 14 is slidably connected inside the limiting groove 8, providing guidance and a certain limiting effect for the axial sliding of the impeller body 1. A slider 15 is fixedly connected to the inner side of the impeller body 1, and a groove 16 is formed on the outer side of the pump shaft 9. The slider 15 is slidably connected to the inner side of the groove 16. This further ensures that the impeller body 1 can only move axially along the pump shaft 9 and will not deviate radially. When the power source is started, the pump shaft 9 begins to rotate. Since the impeller body 1 is slidably connected to the groove 16 on the outer side of the pump shaft 9 through the slider 15 fixed on the inner side, the rotation of the pump shaft 9 will drive the impeller body 1 to rotate synchronously.

[0028] Reference Figure 1 and Figure 2The impeller body 1 has a slider 15 at its bottom, and a limiting groove 12 is formed between the slider 15 and the bottom of the impeller body 1. A ring 10 is provided on the inner side of the end of the guide shell 5, and the slider 15 is slidably connected to the inner side of the ring 10. A limiting groove 13 is formed on the inner side of the end of the guide shell 5, and the limiting groove 13 is connected to the guide shell flow channel 11. The impeller body 1 is slidably connected inside the limiting groove 13. The slider 15 at the bottom of the impeller body 1 slides within the ring 10 on the inner side of the end of the guide shell 5, while the impeller body 1 also slides within the limiting groove 13, which is connected to the guide shell flow channel 11. When the impeller body 1 slides axially, it changes the communication area between the impeller flow channel 4 and the guide shell flow channel 11. When the communication area increases, the fluid flow rate increases; when the communication area decreases, the flow rate decreases, thus achieving flexible adjustment of the pump flow rate.

[0029] Reference Figure 1 and Figure 2 A bearing sleeve 7 is fixedly connected to the outside of the pump shaft 9, and a limiting block 6 is fixedly connected to the outside of the bearing sleeve 7. The bearing sleeve 7 is fixed to the outside of the pump shaft 9, and the limiting block 6 is fixed to the outside of the bearing sleeve 7, which ensures the stability of the position of the limiting block 6 and provides support for subsequent flow regulation.

[0030] Working Principle: The impeller flow channel 4 is formed between multiple blades 2 and the impeller body 1. Its inlet end is an enlarged channel, which effectively reduces the flow velocity at the inlet when the fluid enters the impeller flow channel, reducing impact and turbulence, allowing the fluid to enter the impeller more smoothly and improving the impeller's suction capacity. The smooth channel in the middle section ensures stable and smooth fluid flow within the channel, reducing energy loss and pressure fluctuations. The constricted channel at the outlet section increases the flow velocity when the fluid exits the impeller. According to Bernoulli's principle, the increased velocity leads to the conversion of pressure energy into kinetic energy, thereby increasing the fluid's output pressure and achieving efficient fluid transport. The thrust surface of the impeller is arranged with smooth grooves 17 and ribs 3 extending along the surface, forming an irregular curved surface. Under different displacements, this irregular curved surface can efficiently complete the conversion and transfer of kinetic and pressure energy. At larger displacements, the kinetic and pressure energy conversion efficiency is high; even at smaller displacements, it maintains a good economic operating level, greatly expanding the centrifugal pump's adaptability to large variations in discharge volume.

[0031] When flow rate adjustment is required, the impeller body 1 can slide axially along the pump shaft 9, changing the communication area between the impeller flow channel 4 and the guide shell flow channel 11, thereby achieving flexible flow rate adjustment to adapt to different operating conditions. The bearing sleeve 7 fixedly connected to the outside of the pump shaft 9 provides support and fixation for the limiting block 6, ensuring the stable operation of the entire flow rate adjustment structure.

[0032] The irregular curved surface of the impeller ensures a more uniform velocity distribution as the liquid flows through the impeller channel 4, preventing abrupt changes in velocity and pressure. This uniform flow field distribution prevents sand and scale deposition, reduces cavitation, improves the sand-passing capacity of wide-range pumps, and extends the service life of the impeller.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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. A wide-width pump impeller with an irregularly shaped curved flow channel, comprising an impeller body (1), a guide shell (5), and a pump shaft (9), characterized in that: The guide shell (5) has a guide shell flow channel (11) on its inner side. The guide shell flow channel (11) is equipped with a flow regulating component. The impeller body (1) is equipped with multiple variable cross-section flow channel components. The variable cross-section flow channel assembly includes multiple blades (2), all of which are fixedly connected inside the impeller body (1). An impeller flow channel (4) is formed between the multiple blades (2) and the impeller body (1). The inlet end of the impeller flow channel (4) is an expanding channel, the middle section of the impeller flow channel (4) is a smooth channel, and the outlet section of the impeller flow channel (4) is a contracting channel. Multiple ribs (3) are provided on one side surface of the multiple blades (2), and smooth grooves (17) are provided in the grooves between the multiple ribs (3).

2. The wide-width pump impeller with irregular curved flow channel according to claim 1, characterized in that: The flow regulation includes a limiting block (6), which is disposed inside the guide shell flow channel (11). A limiting groove (8) is opened on the inner side of the bottom of the limiting block (6). A ring (14) is provided at the end of the impeller body (1). The impeller body (1) is slidably connected to the side of the pump shaft (9). The ring (14) is slidably connected inside the limiting groove (8). A slider (15) is fixedly connected to the inner side of the impeller body (1). A sliding groove (16) is opened on the outer side of the pump shaft (9). The slider (15) is slidably connected to the inner side of the sliding groove (16).

3. A wide-width pump impeller with an irregularly shaped curved flow channel according to claim 1, characterized in that: The impeller body (1) is provided with a slider (15) at the bottom. The slider (15) and the bottom of the impeller body (1) are provided with a limiting groove (12). The inner side of the end of the guide shell (5) is provided with a ring (10). The slider (15) is slidably connected to the inner side of the ring (10). The inner side of the end of the guide shell (5) is provided with a limiting groove (13). The limiting groove (13) is connected to the flow channel (11) of the guide shell. The impeller body (1) is slidably connected to the inside of the limiting groove (13).

4. A wide-width pump impeller with an irregularly shaped curved flow channel according to claim 2, characterized in that: A bearing sleeve (7) is fixedly connected to the outside of the pump shaft (9), and the limiting block (6) is fixedly connected to the outside of the bearing sleeve (7).

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