Water pump impeller convenient to replace

Abstract

The utility model discloses a water pump impeller convenient to replace, which belongs to the technical field of water pump impellers and comprises a pump shaft, a wheel disc and blades, one end of the pump shaft is fixedly connected with a spline connecting block, and a spline connecting groove matched with the spline connecting block is formed in the center of the wheel disc. A plurality of annularly-distributed T-shaped grooves are formed in the outer circumference of the wheel disc, T-shaped blocks matched with the T-shaped grooves are arranged at one ends of the blades, fixing grooves are formed in one sides of the T-shaped blocks, fixing holes are formed between spline connecting grooves and the T-shaped grooves, and fixing blocks are slidably installed around the spline connecting blocks. A two-way screw rod is rotationally installed in the spline connecting block, two symmetrical sliding blocks are connected to the two-way screw rod in a threaded mode, and connecting rods are hinged between the sliding blocks and the fixing blocks; and through cooperation of the spline connecting block, the wheel disc and the blades, the impeller is convenient to install, the blades are convenient to replace independently, disassembly is convenient, and the maintenance cost is reduced.

Description

An easy-to-replace water pump impeller Technical Field

[0001] This utility model belongs to the field of water pump impeller technology, specifically relating to a water pump impeller that is easy to replace. Background Technology

[0002] A water pump is a machine that transports or pressurizes liquids. It transfers the mechanical energy of a prime mover or other external energy to the liquid, increasing its energy. It is mainly used to transport liquids including water, oil, acids and alkalis, emulsions, suspensions, and liquid metals. It can also transport liquid-gas mixtures and liquids containing suspended solids. Technical parameters of water pump performance include flow rate, suction head, discharge head, shaft power, water power, and efficiency. Based on different working principles, they can be divided into positive displacement pumps and centrifugal pumps. Positive displacement pumps utilize changes in the volume of their working chamber to transfer energy; centrifugal pumps utilize the interaction between rotating impellers and water to transfer energy. Pumps deliver energy and come in various types, including centrifugal pumps, axial flow pumps, and mixed flow pumps. Pump impellers are made of cast iron, and the blades on the impeller play a crucial role. The shape and size of the impeller are closely related to the pump's performance. Pump impellers are generally classified into single-suction and double-suction types. Single-suction impellers draw water from only one side and are commonly used in small-flow pumps. Double-suction impellers draw water from both sides and are used in large-flow pumps. Currently, most pump impellers are integrated structures, making replacement inconvenient. Furthermore, after prolonged use, the collision of hard particles in the water can damage and deform the blades, affecting the pump's normal operation.

[0003] Existing water pump impellers are generally fixed with multiple bolts, and the blades on the impeller are usually an integral structure with the impeller. When a blade is damaged, it cannot be replaced individually, making disassembly troublesome and maintenance costs high. Summary of the Invention

[0004] The purpose of this invention is to provide a water pump impeller that is easy to replace, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a replaceable water pump impeller, comprising a pump shaft, a disc, and blades. One end of the pump shaft is fixedly connected to a spline connecting block. A spline connecting groove adapted to the spline connecting block is formed at the center of the disc. Multiple annularly distributed T-slots are formed on the outer circumference of the disc. One end of the blade is provided with a T-block adapted to the T-slot. A fixing groove is formed on one side of the T-block. A fixing hole is formed between the spline connecting groove and the T-slot. Fixing blocks adapted to the fixing groove and fixing hole are slidably installed around the spline connecting block. A bidirectional screw is rotatably installed inside the spline connecting block. Two symmetrical sliders are threadedly connected to the bidirectional screw. A connecting rod is hinged between the sliders and the fixing blocks.

[0006] In a preferred embodiment, a limiting disc is fixedly connected at the connection between the pump shaft and the spline connecting block.

[0007] In a preferred embodiment, the spline connecting block is surrounded by key blocks corresponding to the T-shaped block, and the fixing block is disposed on the key blocks.

[0008] In a preferred embodiment, a nut is fixedly connected to one end of the bidirectional screw.

[0009] In a preferred embodiment, the spline connecting block has a groove at the end away from the pump shaft, and the nut is disposed in the groove.

[0010] In a preferred embodiment, a cover plate is magnetically connected to the opening of the groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This easily replaceable pump impeller, through the cooperation of spline connecting blocks, a disc, and blades, allows for easy installation. First, the disc is placed on the spline connecting block, aligning it with the spline groove. Then, the T-shaped blocks of each blade are slid into their corresponding T-grooves. At this point, the fixing grooves on each T-shaped block are aligned with the corresponding fixing holes and fixing blocks. A tool can then be used to rotate the nut, causing it to rotate the bidirectional screw. The bidirectional screw drives two sliders to slide relative to each other, allowing the sliders to pass through the fixing holes and insert into the fixing grooves via the connecting rod. This connects the spline connecting block, disc, and blades together, facilitating impeller installation.

[0013] This easy-to-replace water pump impeller is assembled with blades and a disc. When a blade is damaged, the nut can be turned in the opposite direction with a tool to remove the fixing block from the fixing groove, and the blade can be slid off the disc. This makes it easy to replace blades individually, and the disassembly is convenient, reducing maintenance costs. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 is a schematic diagram of the disassembled structure of this utility model;

[0016] Figure 3 is a cross-sectional structural diagram of the spline connecting block of this utility model.

[0017] In the diagram: 1. Pump shaft; 11. Spline connecting block; 111. Key block; 12. Fixing block; 13. Double-acting screw; 14. Slider; 15. Connecting rod; 16. Limiting plate; 17. Nut; 18. Groove; 19. Cover plate; 2. Wheel disc; 21. Spline connecting groove; 22. T-slot; 23. Fixing hole; 3. Blade; 31. T-block; 32. Fixing groove. Detailed Implementation

[0018] The present invention will be further described below with reference to the embodiments.

[0019] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0020] Please refer to Figures 1-3. This utility model provides a replaceable water pump impeller, including a pump shaft 1, a disc 2, and blades 3. One end of the pump shaft 1 is fixedly connected to a spline connecting block 11. A spline connecting groove 21 adapted to the spline connecting block 11 is opened at the center of the disc 2. Multiple annularly distributed T-shaped grooves 22 are opened on the outer circumference of the disc 2. One end of the blades 3 is provided with a T-shaped block 31 adapted to the T-shaped groove 22. A fixing groove 32 is opened on one side of the T-shaped block 31. The spline connecting groove 21 and the T-shaped groove 22 are connected... A fixing hole 23 is provided. A fixing block 12, which is adapted to the fixing groove 32 and the fixing hole 23, is slidably installed around the spline connecting block 11. A key block 111 corresponding to the T-block 31 is provided around the spline connecting block 11. The fixing block 12 is set on the key block 111. A double-acting screw 13 is rotatably installed inside the spline connecting block 11. A nut 17 is fixedly connected to one end of the double-acting screw 13. Two symmetrical sliders 14 are threadedly connected to the double-acting screw 13. The sliders 14 are hinged to the fixing block 12. The connecting rod 15, through the cooperation of the spline connecting block 11, the wheel 2, and the blades 3, allows for the following steps when installing the impeller: First, the wheel 2 is placed on the spline connecting block 11, aligning the spline connecting block 11 with the spline connecting groove 21. Then, the T-shaped blocks 31 of each blade 3 are slidably inserted into their corresponding T-shaped grooves 22. At this point, the fixing grooves 32 on each T-shaped block 31 are aligned with their corresponding fixing holes 23 and fixing blocks 12. Finally, a tool can be used to rotate the nut 17, causing it to drive the bidirectional screw 13. Rotation causes the two sliders 14 to slide relative to each other via the bidirectional screw 13. The sliders 14, through the connecting rod 15, drive the fixing block 12 through the fixing hole 23 and insert it into the fixing groove 32, thereby connecting the spline connecting block 11, the wheel 2 and the blade 3 together, which facilitates the installation of the impeller. When a blade 3 is damaged, the nut 17 can be rotated in the opposite direction with a tool to remove the fixing block 12 from the fixing groove 32, and the blade 3 can be slid off the wheel 2 for easy replacement of the blade 3. Disassembly is convenient and maintenance costs are reduced.

[0021] Among them, a limiting disk 16 is fixedly connected at the connection between the pump shaft 1 and the spline connecting block 11. By setting the limiting disk 16, the disk 2 can be limited when it is mounted on the spline connecting block 11.

[0022] The spline connecting block 11 has a groove 18 at the end away from the pump shaft 1. The nut 17 is placed in the groove 18. The opening of the groove 18 is magnetically connected to the cover plate 19. The groove 18 and the cover plate 19 can protect the nut 17 and prevent it from being hit.

[0023] The working principle and usage process of this utility model are as follows: First, when installing the impeller, the wheel disk 2 can be placed on the spline connecting block 11, so that the spline connecting block 11 is inserted into the spline connecting groove 21. Then, the T-shaped block 31 of each blade 3 is slidably inserted into the corresponding T-shaped groove 22. At this time, the fixing groove 32 on each T-shaped block 31 is aligned with the corresponding fixing hole 23 and fixing block 12. Then, the nut 17 can be rotated with a tool, so that the nut 17 drives the bidirectional screw 13 to rotate. The bidirectional screw 13 drives the two sliders 14 to slide relative to each other, so that the sliders 14 drive the fixing block 12 through the fixing hole 23 and insert it into the fixing groove 32 through the connecting rod 15, thereby connecting the spline connecting block 11, wheel disk 2 and blade 3 together, which facilitates the installation of the impeller. When a blade 3 is damaged, the nut 17 can be rotated in the opposite direction with a tool, so that the fixing block 12 is removed from the fixing groove 32, and the blade 3 can be slid out from the wheel disk 2, which is convenient for individual replacement of blade 3. Disassembly is convenient and maintenance costs are reduced.

[0024] 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 replaceable water pump impeller, comprising a pump shaft (1), a disc (2), and blades (3), characterized in that: One end of the pump shaft (1) is fixedly connected to a spline connecting block (11). A spline connecting groove (21) adapted to the spline connecting block (11) is provided at the center of the wheel disc (2). Multiple annularly distributed T-shaped grooves (22) are provided on the outer circumference of the wheel disc (2). One end of the blade (3) is provided with a T-shaped block (31) adapted to the T-shaped groove (22). A fixing groove (32) is provided on one side of the T-shaped block (31). The spline connecting groove (11) is fixed to the center of the wheel disc (2). 21) A fixing hole (23) is provided between the spline connecting block (11) and the T-slot (22). A fixing block (12) that is compatible with the fixing slot (32) and the fixing hole (23) is slidably installed around the spline connecting block (11). A bidirectional screw (13) is rotatably installed inside the spline connecting block (11). Two symmetrical sliders (14) are threaded on the bidirectional screw (13). A connecting rod (15) is hinged between the slider (14) and the fixing block (12).

2. The easily replaceable water pump impeller according to claim 1, characterized in that: A limiting plate (16) is fixedly connected at the connection between the pump shaft (1) and the spline connecting block (11).

3. The easily replaceable water pump impeller according to claim 1, characterized in that: The spline connecting block (11) is surrounded by a key block (111) corresponding to the T-shaped block (31), and the fixing block (12) is disposed on the key block (111).

4. The easily replaceable water pump impeller according to claim 1, characterized in that: A nut (17) is fixedly connected to one end of the bidirectional screw (13).

5. A replaceable water pump impeller according to claim 4, characterized in that: The spline connecting block (11) has a groove (18) at one end away from the pump shaft (1), and the nut (17) is placed in the groove (18).

6. The easily replaceable water pump impeller according to claim 5, characterized in that: A cover plate (19) is magnetically connected to the opening of the groove (18).

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