Detachable centrifugal pump impeller structure

Abstract

The utility model discloses a detachable centrifugal pump impeller structure, which relates to the technical field of centrifugal pumps and comprises an impeller main body, the impeller main body comprises a front cover plate, a rear cover plate and a hub, a circular plate is arranged on the outer side of the hub, the front cover plate and the rear cover plate are respectively arranged at the front end and the rear end of the hub, and a plurality of blades are fixedly connected onto the circular plate. The blades are fixedly connected with the inner side of the front cover plate, the inner side of the front cover plate is fixedly connected with a plurality of reinforcing ribs, the reinforcing ribs are attached to the circular plate, the two ends of each reinforcing rib are attached to the blades, the front cover plate, the rear cover plate and the circular plate are fixedly connected through a plurality of connecting assemblies, the front cover plate, the rear cover plate and the circular plate are provided with a plurality of sealing grooves, and sealing rings are arranged in the sealing grooves. The centrifugal pump impeller structure is convenient to disassemble and reassemble, the maintenance convenience is improved, the structural stability, the sealing performance, accurate positioning and assembling, corrosion resistance and the like are excellent, and the centrifugal pump impeller structure is particularly suitable for corrosive liquid treatment and other complex working conditions.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal pump technology, and is a detachable centrifugal pump impeller structure. Background Technology

[0002] Traditional impeller structures, due to limitations in casting or welding processes during manufacturing, often struggle to guarantee precise fit and sealing performance between components, leading to frequent fluid leakage. This not only reduces the efficiency of the centrifugal pump but can also cause further damage to the equipment.

[0003] Traditional impeller structures also have limited material options, often failing to meet the performance requirements for corrosion resistance and wear resistance under different operating conditions. Especially in corrosive media or high-temperature and high-pressure environments, the performance of traditional impeller structures is often significantly reduced, severely affecting the stability and service life of centrifugal pumps.

[0004] While ensuring the impeller's strength and integrity, there are shortcomings in achieving easy disassembly, maintenance, and replacement of the impeller, as well as improving its sealing performance and adaptability to different working conditions. Utility Model Content

[0005] The purpose of this utility model is to provide a detachable centrifugal pump impeller structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A detachable centrifugal pump impeller structure includes an impeller body, which comprises a front cover plate, a rear cover plate, and a hub. A circular plate is located on the outer side of the hub. The front and rear cover plates are respectively disposed at the front and rear ends of the hub. Multiple blades are fixedly connected to the circular plate, and the blades are fixedly connected to the inner side of the front cover plate. Multiple reinforcing ribs are fixedly connected to the inner side of the front cover plate, and these ribs are fitted to the circular plate. The two ends of the reinforcing ribs are fitted to the blades. The front cover plate, rear cover plate, and circular plate are fixedly connected by multiple connecting components. Multiple sealing grooves are provided on the inner side of the front cover plate and the circular plate, and sealing rings are disposed within the sealing grooves.

[0008] In a preferred embodiment, the front cover plate, the rear cover plate, and the circular plate are provided with multiple bolt holes, the inner side of the front cover plate is provided with multiple positioning pins, the circular plate is provided with multiple slots, the upper end of the blade is provided with a positioning hole, and the bottom of the blade is provided with a protrusion.

[0009] In a preferred embodiment, the connecting assembly includes a fastening bolt, one end of which has a bolt head and the other end has a bolt tail. The fastening bolt passes through a bolt hole on the circular plate. The bolt head engages with a bolt hole on the front cover plate, and the bolt tail engages with a bolt hole on the rear cover plate. The front cover plate, rear cover plate, and circular plate are connected by a nut.

[0010] In a preferred embodiment, the positioning pin on the inner side of the front cover plate is installed in the positioning hole at the upper end of the blade, and the protrusion at the bottom of the blade is installed in the slot of the circular plate.

[0011] In a preferred embodiment, the sealing groove is located at the edge of the bolt hole, and the sealing ring is located on the fastening bolt.

[0012] In a preferred embodiment, the front cover plate and the rear cover plate are circular flat plate structures, the front cover plate and the rear cover plate are provided with through holes in the center, the blades are arc-shaped, and the two ends of the reinforcing ribs are arc-shaped.

[0013] In a preferred embodiment, the inner side of the rear cover plate is fitted with a circular plate, and the materials of the front cover plate and the rear cover plate are selected from high-strength and corrosion-resistant materials.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. Easy maintenance: Due to its detachable design, the impeller assembly can be easily disassembled and reassembled when cleaning, inspection or maintenance is required, which greatly improves maintenance efficiency and reduces maintenance costs.

[0016] 2. Enhanced structural stability: The impeller structure is made more robust by the connecting components between the front cover plate, the rear cover plate and the circular plate, and the design of the reinforcing ribs fitting closely to the blades, so that it can withstand higher working pressure and more complex working environments.

[0017] 3. Improved sealing performance: Multiple sealing grooves are provided in the front cover plate, rear cover plate and circular plate, and sealing rings are placed in them to effectively prevent fluid leakage and ensure the safety and stability of equipment operation.

[0018] 4. Precise positioning and assembly: The positioning pins on the front cover, the positioning holes on the blades, the slots on the circular plate, and the protrusions at the bottom of the blades ensure precise alignment and stable installation between the components, improving the overall assembly accuracy.

[0019] 5. Enhanced corrosion resistance: The front and rear cover plates are made of high-strength, corrosion-resistant materials, which increases the service life of the impeller, especially when handling corrosive liquids.

[0020] In summary, this detachable centrifugal pump impeller design improves maintenance convenience, enhances structural stability and sealing performance, ensures precise positioning and assembly, and utilizes corrosion-resistant materials to extend service life, making it particularly suitable for handling corrosive liquids. The overall design excels in simplifying maintenance, enhancing stability, improving sealing, ensuring precise assembly, and providing corrosion resistance. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the internal structure of this utility model;

[0025] Figure 5 This is a side view of the present invention.

[0026] Figure 6 This is a schematic diagram of the sealing groove structure of this utility model;

[0027] In the diagram: 1 Impeller body, 11 Front cover plate, 111 Locating pin, 12 Rear cover plate, 13 Hub, 14 Circular plate, 141 Slot, 15 Blade, 151 Locating hole, 152 Protrusion, 16 Reinforcing rib, 17 Connecting assembly, 171 Fastening bolt, 172 Bolt head, 173 Bolt tail, 174 Nut, 18 Sealing groove, 19 Sealing ring, 20 Bolt round hole, 21 Through hole. Detailed Implementation

[0028] 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.

[0029] Please see Figures 1 to 6A detachable centrifugal pump impeller structure includes an impeller body 1, which includes a front cover plate 11, a rear cover plate 12, and a hub 13. A circular plate 14 is located on the outer side of the hub 13. The front cover plate 11 and the rear cover plate 12 are respectively located at the front end and rear end of the hub 13. Multiple blades 15 are fixedly connected to the circular plate 14. The blades 15 are fixedly connected to the inner side of the front cover plate 11. Multiple reinforcing ribs 16 are fixedly connected to the inner side of the front cover plate 11. The reinforcing ribs 16 are fitted to the circular plate 14, and the two ends of the reinforcing ribs 16 are fitted to the blades 15. The front cover plate 11, the rear cover plate 12, and the circular plate 14 are fixedly connected by multiple connecting components 17. Multiple sealing grooves 18 are provided on the inner side of the front cover plate 11 and the circular plate 14. Sealing rings 19 are provided in the sealing grooves 18.

[0030] The front cover plate 11, the rear cover plate 12 and the circular plate 14 are provided with multiple bolt holes 20, the inner side of the front cover plate 11 is provided with multiple positioning pins 111, the circular plate 14 is provided with multiple slots 141, the upper end of the blade 15 is provided with a positioning hole 151, and the bottom of the blade 15 is provided with a protrusion 152.

[0031] The connecting assembly 17 includes a fastening bolt 171, one end of which is provided with a bolt head 172 and the other end of which is provided with a bolt tail 173. The fastening bolt 171 passes through a bolt hole 20 on the circular plate 14. The bolt head 172 engages with the bolt hole 20 on the front cover plate 11, and the bolt tail 173 engages with the bolt hole 20 on the rear cover plate 12. The front cover plate 11, the rear cover plate 12, and the circular plate 14 are connected by a nut 174.

[0032] The positioning pin 111 on the inner side of the front cover plate 11 is installed in the positioning hole 151 at the upper end of the blade 15, and the protrusion 152 at the bottom of the blade 15 is installed in the slot 141 of the circular plate 14.

[0033] The sealing groove 18 is located at the edge of the bolt hole 20, and the sealing ring 19 is located on the fastening bolt 171.

[0034] The front cover plate 11 and the rear cover plate 12 are circular flat plate structures. The front cover plate 11 and the rear cover plate 12 are provided with through holes 21 in the center. The blade 15 is arc-shaped and the two ends of the reinforcing rib 16 are arc-shaped.

[0035] The inner side of the rear cover plate 12 is fitted with the circular plate 14, and the front cover plate 11 and the rear cover plate 12 are made of high-strength and corrosion-resistant materials.

[0036] In this embodiment, the front cover plate 11 and the rear cover plate 12 are respectively mounted on the front and rear ends of the hub 13. Multiple blades 15 are fixed to the circular plate 14. These blades 15 are not only firmly connected to the circular plate 14, but also connected to the inner side of the front cover plate 11 in a specific manner. To enhance the stability and strength of the structure, multiple reinforcing ribs 16 are also fixed to the inner side of the front cover plate 11. These reinforcing ribs 16 are tightly fitted to the circular plate 14, and their ends are also fitted to the blades 15, forming a robust integral structure.

[0037] To achieve impeller detachability, the front cover plate 11, rear cover plate 12, and circular plate 14 are fixedly connected by multiple connecting components 17. These connecting components 17 are specifically fastening bolts 171, which pass through bolt holes 20 on the circular plate 14 and mate with corresponding bolt holes 20 on the front cover plate 11 and rear cover plate 12, ultimately being tightened by nuts 174. To ensure sealing at the connection points, multiple sealing grooves 18 are provided on the front cover plate 11, rear cover plate 12, and circular plate 14, and sealing rings 19 are installed within these sealing grooves 18.

[0038] In addition, to further improve the accuracy and stability of assembly, multiple locating pins 111 are provided on the inner side of the front cover plate 11. These locating pins 111 cooperate with the locating holes 151 at the upper end of the blade 15. At the same time, protrusions 152 are also provided at the bottom of the blade 15. These protrusions 152 cooperate with the slots 141 on the circular plate 14 to ensure the stable installation of the blade 15 on the circular plate 14.

[0039] Both the front cover plate 11 and the rear cover plate 12 adopt a circular flat plate structure with a through hole 21 in the center for connection to the centrifugal pump shaft. The blades 15 are designed in an arc shape to accommodate fluid flow. Simultaneously, the ends of the reinforcing ribs 16 also adopt an arc shape to ensure a good fit with the blades 15. High-strength, corrosion-resistant materials are used to manufacture the front cover plate 11 and the rear cover plate 12. This material not only has good corrosion resistance but also high strength and hardness, ensuring stable impeller operation under harsh conditions.

[0040] During centrifugal pump operation, fluid enters the impeller body 1 and is propelled by the blades 15, generating centrifugal force and being thrown to the outside of the impeller, thus gaining energy. Due to the impeller's detachable design, individual components can be easily disassembled and reassembled for cleaning, inspection, or maintenance, significantly improving maintenance efficiency and reducing costs. The connecting assembly 17 between the front cover plate 11, rear cover plate 12, and circular plate 14, along with the design of the reinforcing ribs 16 fitting snugly against the blades 15, makes the entire impeller structure more robust, capable of withstanding higher operating pressures and more complex working environments. The sealing groove 18 and sealing ring 19 effectively prevent fluid leakage, ensuring the safety and stability of equipment operation. The design of the locating pin 111, locating hole 151, slot 141, and protrusion 152 ensures precise alignment and stable installation between components, improving the overall assembly accuracy. The use of high-strength, corrosion-resistant materials increases the impeller's service life, especially when handling corrosive liquids.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detachable centrifugal pump impeller structure comprising an impeller body (1), characterized in that: The impeller body (1) comprises a front cover plate (11), a rear cover plate (12) and a hub (13), the outer side of the hub (13) is provided with a circular plate (14), the front cover plate (11) and the rear cover plate (12) are arranged at the front end and the rear end of the hub (13) respectively, a plurality of blades (15) are fixedly connected to the circular plate (14), the blades (15) are fixedly connected to the inner side of the front cover plate (11), a plurality of reinforcing ribs (16) are fixedly connected to the inner side of the front cover plate (11), the reinforcing ribs (16) are in close contact with the circular plate (14), the two ends of the reinforcing ribs (16) are in close contact with the blades (15), the front cover plate (11), the rear cover plate (12) and the circular plate (14) are fixedly connected through a plurality of connecting assemblies (17), a plurality of sealing grooves (18) are arranged on the inner side of the front cover plate (11) and the circular plate (14), and sealing rings (19) are arranged in the sealing grooves (18).

2. A detachable centrifugal pump impeller structure according to claim 1, characterized in that: A plurality of bolt round holes (20) are arranged on the front cover plate (11), the rear cover plate (12) and the circular plate (14), a plurality of positioning pins (111) are arranged on the inner side of the front cover plate (11), a plurality of clamping grooves (141) are arranged on the circular plate (14), the upper end of the blade (15) is provided with a positioning hole (151), and the bottom of the blade (15) is provided with a protruding block (152).

3. A demountable centrifugal pump impeller structure according to claim 2, characterized in that: The connecting assembly (17) comprises a fastening bolt (171), one end of the fastening bolt (171) is provided with a bolt head (172), the other end of the fastening bolt (171) is provided with a bolt tail (173), the fastening bolt (171) penetrates through the bolt round hole (20) on the circular plate (14), the bolt head (172) is matched with the bolt round hole (20) on the front cover plate (11), the bolt tail (173) is matched with the bolt round hole (20) on the rear cover plate (12), and the front cover plate (11), the rear cover plate (12) and the circular plate (14) are connected through a nut (174).

4. A demountable centrifugal pump impeller structure according to claim 2, characterized in that: The positioning pin (111) on the inner side of the front cover plate (11) is arranged in the positioning hole (151) at the upper end of the blade (15), and the protruding block (152) at the bottom of the blade (15) is arranged in the clamping groove (141) of the circular plate (14).

5. A demountable centrifugal pump impeller structure according to claim 3, characterized in that: The sealing groove (18) is arranged at the edge of the bolt round hole (20), and the sealing ring (19) is arranged on the fastening bolt (171).

6. A demountable centrifugal pump impeller structure according to claim 1, characterized in that: The front cover plate (11) and the rear cover plate (12) are circular flat plate structures, the center of the front cover plate (11) and the rear cover plate (12) is provided with a through hole (21), the blade (15) is a circular arc, and the two ends of the reinforcing rib (16) are circular arcs.

7. A detachable centrifugal pump impeller structure according to claim 1, characterized in that: The inner side of the rear cover plate (12) is in close contact with the circular plate (14), and the front cover plate (11) and the rear cover plate (12) are made of high-strength corrosion-resistant materials.

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